Calculate LER for the same wing if we increase the span to 0.245 m. By increasing the span, we also increase the glider weight to 0.0523 newtons.
4.74
0.2108
0.0523
0.18
Answers
Answer:
0.2108
Explanation:
WA = 0.245 x 0.045 = 0.011025 m2. Then, LER = 0.011025/0.0523 = 0.2108.
Related Questions
In the AC resistor circuit of Figure Q2.1, the voltage of the AC power source is
U = 100 sin(120pi x t) V .
what are
(a) the peak voltage of the AC power source
(b) the frequency of the alternating current in the circuit
(c) the instantaneous voltage of the power source at t = 20 ms
(d) the peak voltage across each resistor
(e) the instantaneous resistor voltages at t = 20 ms,
(f) to sketch the waveform of voltage in the first two periods
Answers
Answer:
(a) 100 V
(b) 60 Hz
(c) 95.106 V
(d) 25 V, 75 V
(e) 23.776 V, 71.329 V
(f) see attached
Explanation:
(a)The peak value of the sine function is 1, so the peak value of U is ...
100·1 = 100 V.
__
(b)The argument of the sine function is 2πft, so f = 120πt/(2πt) = 60 Hz.
__
(c)When t=0.020, the voltage is ...
U = 100sin(120π·0.020) = 100 sin(2.4π) ≈ 95.106 V
__
(d)The resistors are in the ratio of 1 : 3, so divide the source voltage in that ratio.
The peak voltage across the 5Ω resistor is 1/4 of 100 V, or 25 V.
The peak voltage across the 15Ω resistor is 3/4 of 100 V, or 75 V.
__
(e)The same fractions as in (d) apply to the instantaneous voltage.
The voltage on the 5Ω resistor is 1/4·95.106 V ≈ 23.776 V
The voltage on the 15Ω resistor is 3/4·95.106 V ≈ 71.329 V
__
(f)See attached.
Which of the following must be considered when determining the size of the conductor required to connect an electrical load to the source of supply?
Answers
When choosing circuit conductors, four aspects should be taken into account: current flow, voltage, voltage drop over distance, and heat resistance.
Three key criteria are used to determine the cable size: the carrying capacity right now. voltage control. Rating for short circuits. What elements determine the conduit and tubing sizes needed for an installation? Conductor count, cross-sectional area, and permitted raceway fill.
To avoid overheating and fire, the NEC specifies conductor minimum sizes. Three main variables affect how big a conductor needs to be to safely carry the current forced upon it: insulation type, ambient temperature, and conductor bundling.
Kelvin's law determines the appropriate size of the conductor for transmission lines (given by Lord Kelvin in 1881).
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Consider the titration of 100.0 mL of 0.200 M CH3NH2 by 0.100 M HCl.
For each volume of HCl added, decide which of the components is a major species after the HCl has reacted completely.
Kb for CH3NH2 = 4.4 x 10-4.
What species are present based off what is being added?
200.00 mL HCl added
yes no H+
yes no H2O
yes no Cl-
yes no CH3NH2
yes no CH3NH3+
300.00 mL HCl added
yes no H+
yes no H2O
yes no Cl-
yes no CH3NH2
yes no CH3NH3+
Calculate the pH at the equivalence point for this titration?
Answers
Answer:
The answers are in the explanation. The pH is 5.91
Explanation:
The CH3NH2 reacts with HCl as follows:
CH3NH2 + HCl → CH3NH3⁺ + Cl⁻
When 200mL of HCl are added, the moles of CH3NH2 and HCl are reacting completely producing CH3NH3+ and Cl-. That means the species present are:
no H+. All reacted
yes H2O. Because the water is present in the solutions of HCl and CH3NH2
yes Cl-. Is a product of the reaction
Yes CH3NH2. Is consumed in the reaction but comes from the equilibrium of CH3NH3+
yes CH3NH3+. Is the other product of the reaction. MAJOR SPECIES
When 300.00mL of HCl are added, 100mL are in excess:
yes H+. Is in excess: H+ + Cl- = HCl in water. MAJOR SPECIES. Determine the pH of the solution.
yes H2O. Is present because the reactants are diluted.
yes Cl-. Is a product of reaction and comes from HCl.
Yes CH3NH2. The reactant is over but comes from the equilibrium of CH3NH3+
yes no CH3NH3+. Yes. Is a product and remains despite HCl is in excess.
To find the pH:
At equivalence point the ion that determines pH is CH3NH3+. Its concentration is:
0.100L * (0.200mol/L) = 0.0200 moles / 0.300L = 0.0667M CH3NH3+
The equilibrium of CH3NH3+ is:
Ka = Kw/kb = 1x10-14/4.4x10-4 = 2.273x10-11 = [H+] [CH3NH2] / [CH3NH3+]
As both [H+] [CH3NH2] comes from the same equilibrium:
[H+] = [CH3NH2] = X
2.273x10-11 = [X] [X] / [0.0667M]
1.5159x10-12 = X²
X = 1.23x10-6M = [H+]
As pH = -log [H+]
pH = 5.91
The pH at the equivalent point for this titration is "5.91".
pH Calculation:\(CH_3NH_2 = 0.200\ M\\\\ \text{volume} = 100.0\ mL = 0.100\ L\\\\HCl = 0.100\ M\\\\\)
We must now quantify the pH well at the equivalence point.
We know that even at the point of equivalence, moles of acid and moles of the base are equivalent. As such, first, we must calculate the number of moles of the given base.
Calculating the Moles in \(CH_3NH_2 = 0.200\ M \times 0.100\ L = 0.0200\ moles\)
Calculating the Moles in \(HCl = 0.0200 \ moles\)
Calculating the volume of \(HCl\):
\(\to \text{Molarity} = \frac{ \text{moles}}{\text{volume \ (L)}} \\\\\to \text{Volume} = \frac{\text{moles}}{\text{molarity}}\\\\\)
\(= \frac{0.0200 \ moles}{ 0.100\ M}\\\\= 0.200 \ L\\\\= 200 \ mL\\\\\)
Calculating the reaction among the acid and base:
\(CH_3NH_2 + HCl \longrightarrow CH_3NH_3^{+} + Cl^-\)
\(0.0200 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 0.0200 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 0.0200\)
Therefore the conjugate acid of the bases exists at the standard solution.
Then we must calculate the new molar mass of \(CH_3NH_3^+\).
Total volume\(= 100 + 200 = 300\ mL = 0.300\ L\)
\([CH_3NH_3^+] = \frac{0.0200\ mole}{ 0.300\ L}= 0.0667\ M\)
Using the ICE table
\(CH_3NH_3^+ + H_2O \longrightarrow CH_3NH_2 + H_3O^+\)
\(I \ \ \ \ \ \ \ \ \ \ 0.0667 \ \ \ \ \ \ \ \ \ 0\ \ \ \ \ \ \ \ \ 0\\\\C\ \ \ \ \ \ \ \ -x\ \ \ \ \ \ \ \ +x \ \ \ \ \ \ \ \ +x\\\\E \ \ \ \ \ \ \ \ \ \ \ \ 0.0667-x \ \ \ \ \ \ \ \ \ \ \ \ +x \ \ \ \ \ \ \ \ \ \ \ \+x\\\\\to Ka = \frac{[CH_3NH_2] [H_3O^+] }{[CH_3NH_3^+]}\)
Calculating \(K_a\) from \(K_b\)
\(\to K_a \times K_b = 1\times 10^{-14}\\\\\to K_a = \frac{1\times 10^{-14}}{4.4\times 10^{-4}} = 2.27\times 10^{-11}\\\\\)
\(= 2.27\times 10^{-11} \\\\= x\times \frac{x}{(0.0667-x)}\)
The x in the 0.0667-x can be ignored since the Ka value is just too small and it also does not follow the five percent criteria.
\(\to 2.27 \times 10^{-11} \times 0.0667 = x_2\\\\\to x_2 = 1.515\times 10^{-12}\\\\\to x = 1.23\times 10^{-6}\ M\\\\\to [H_3O^+] = x = 1.23\times 10^{-6}\ M\\\\\)
We have the formula to calculate pH.
\(\to pH = - \log [H_3O^+] = - \log 1.23\times 10^{-6}\ M= 5.91\)
The pH at the equivalent point for this titration is "5.91".
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Which statement about the seal between the respirator and the wearer's face is true?
POSSIBLE ANSWERS:
Negative pressure respirators prevent ambient air from entering the mask.
Cosmetic surgery can be completed without a re-evaluation of respirator fit.
Positive pressure respirators tighten the face mask when the wearer inhales.
Facial hair can prevent a respirator from properly sealing to the wearer’s face.
Answers
A true statement about the seal between the respirator and the wearer's face is: D. facial hair can prevent a respirator from properly sealing to the wearer’s face.
What is a respirator?A respirator can be defined as a personal protective equipment that is typically worn over the face to protect the mouth and nose, while protecting the wearer from inhaling smoke, dust, or other toxic chemical substances.
In this context, a true statement about the seal between the respirator and the wearer's face is that facial hair has the ability to prevent a respirator from properly sealing to the wearer’s face.
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A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at 12 MPa, 5608C and expands to 1 MPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 1 MPa. The remaining steam expands through the second turbine stage to the condenser pressure of 6 kPa. Saturated liquid exits the open feedwater heater at 1 MPa. The net power output for the cycle is 330 MW. For isentropic processes in the turbines and pumps.
Determine:
a. the cycle thermal efficiency.
b. the mass flow rate into the first turbine stage, in kg/s.
c. the rate of entropy production in the open feedwater heater, in kW/K.
Answers
Answer:
a) 0.489
b) 54.42 kg/s
c) 247.36 kW/s
Explanation:
Note that all the initial enthalpy and entropy values were gotten from the tables.
See the attachment for calculations
Determine the critical load if the bottom is fixed and the top is pinned. ewew = 1. 6 ×(10)3ksi×(10)3ksi ,σyσy = 5 ksiksi
Answers
Critical load Fcr or buckling load is the value of load that causes the phenomenon of change from stable to unstable equilibrium state.
With that beign said, first it is neessary to calculate the moment of inercia about the x-axis:
\(Ix= \frac{db^3}{12}\\ Ix = \frac{2.(4)^3}{12} = 10.667in\)
Then it is necessary to calculate the moment of inercia about the y-axis:
\(Iy = \frac{db^3}{12}\\ Iy = \frac{4.(2)^3}{12} = 2.662in\)
Comparing both moments of inercia it is possible to assume that the minimun moment of inercia is the y-axis, so the minimun moment of inercia is 2662in.
And so, it is possible to calculate the critical load:
\(Pc\gamma = \frac{2046\pi ^2E.I}{L^2} \\Pc\gamma= \frac{2046.\pi ^2.(1,6.10^3.10^3).2662}{(10.12)^2} \\Pc\gamma= 5983,9db\)
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Set up the following characteristic equations in the form suited to Evanss root-locus method. Give L(s), a(s), and b(s) and the parameter, K, in terms of the original parameters in each case. Be sure to select K so that a(s) and b(s) are monic in each case and the degree of b(s) is not greater than that of a(s).
a) s + (1/τ) = 0 versus parameter τ
b) s2 + cs + c + 1 = 0 versus parameter c
c) (s + c)3 + A(Ts + 1) = 0
i. versus parameter A
ii. versus parameter T
iii. versus the parameter c, if possible. Say why you can or can not. Can a plot of the roots be drawn versus c for given constant values of A and T by any means at all.
d) 1 + (kp + k1/s + kDs/Ts + 1)G(s) = 0. Assume that G(s) = A c(s)/d(s), where c(s) and d(s) are monic polynomials with the degree of d(s) greater than that of c(s).
i. versus kp
ii. versus kI
iii. versus kD
iv. versus τ
Answers
Answer:
attached below is the detailed solution and answers
Explanation:
Attached below is the detailed solution
C(iii) : versus the parameter C
The parameter C is centered in a nonlinear equation, therefore the standard locus will not apply hence when you use a polynomial solver the roots gotten would be plotted against C
Answer: a(s) is of degree n and b(s) is of degree n-1.
a)Characteristic equation in form suitable for Evans's root-locus method is given by a(s) + b(s)K = 0, where a(s) and b(s) are polynomials of s with real coefficients. Now, given equation can be represented as: s + (1/τ) = 0 => s + (1/τ) = 0s + (1/τ)K = 0=> K = -τs/τ + 0Thus, L(s) = s, a(s) = 1, b(s) = 1 and K = -τ.
b)The characteristic equation is given by:s^2 + cs + c + 1 = 0For the root-locus method, we have to write the characteristic equation in the form a(s) + b(s)K = 0. Since the degree of a(s) is 2, we select K such that the degree of b(s) is also 2, and so b(s) will be monic.s^2 + cs + c + 1 = 0=> (s + c/2)^2 + 1/4 - c^2/4 + c = 0=> s^2 + (2c)s + (1 + c - c^2/4) = 0Now, taking a(s) = s^2 + (2c)s + (1 + c - c^2/4) and b(s) = 1 with K = -1/c^2, we have:a(s) + b(s)K = s^2 + (2c)s + (1 + c - c^2/4) - 1/c^2 = 0
c) The characteristic equation is given by:(s + c)3 + A(Ts + 1) = 0
i. versus parameter A:s = -c is a repeated root of multiplicity 3 when A = 0For s = -c, the characteristic equation becomes:-A(Tc + 1) = 0If A = 0, the characteristic equation will be (s + c)^3 = 0 and will have a repeated root at s = -c with a multiplicity of 3.
ii. versus parameter T:s = -c is a repeated root of multiplicity 3 when T = 0.For s = -c, the characteristic equation becomes:3c^2s + A = 0If A = 0, the characteristic equation will be (s + c)^3 = 0 and will have a repeated root at s = -c with a multiplicity of 3.
iii. versus the parameter c:We cannot draw the root locus of (s + c)3 + A(Ts + 1) = 0 with respect to the parameter c because there is no c term in the characteristic equation; it only contains c cubed.
d) The characteristic equation is given by:1 + (kp + k1/s + kDs/Ts + 1)G(s) = 0Assuming G(s) = Ac(s)/d(s), where c(s) and d(s) are monic polynomials with the degree of d(s) greater than that of c(s), the characteristic equation becomes:
d(s) + kp d(s) + k1 d(s)/s + kDs c(s)/T = 0.
Thus, a(s) = d(s) + k1 d(s)/s and b(s) = kDc(s)/T + kp d(s) with K = -1.
Therefore, a(s) is of degree n and b(s) is of degree n-1.
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I'll give brainliest,pls help.in a small paragraph explain a series circuit,it's basically for a presentation 8th grade work
Answers
Answer:
electric circuit, a conduit for moving current. A battery or generator, a device that provides energy to the charged particles that make up the current, a device that uses current, such as a lamp, an electric motor, or a computer, and the connecting wires or transmission lines make up an electric circuit. Ohm's law and Kirchhoff's rules are two fundamental laws that quantitatively define how electric circuits function.
network in series
circuit parallel
There are various categories in which to place electric circuits. Only one direction of current can flow through a direct-current circuit. As in most residential circuits, an alternating-current circuit transports current that pulses back and forth repeatedly every second. (To learn more about direct and alternating current circuits, visit electricity: Direct electric
Explanation:
is this good? please mark brainliest
Explain in details what limiting function friction is and Cone
Answers
Cone of friction refers to a cone where the resulting force exerted by one flat horizontal surface on another is to be located while both surfaces are at rest and determined by the coefficient of static friction.
What is Static friction?The resistance to motion of one object moving in relation to another is known as friction. It is not regarded as a fundamental force like gravity or electromagnetic, according to the International Journal of Parallel, Emergent and Distributed Systems(opens in new tab).
The electromagnetic attraction between charged particles in two contacting surfaces, according to scientists, is what causes it.
According to the book Soil Mechanics(opens in new tab), scientists started putting together the laws governing friction in the 1400s.
Therefore, Cone of friction refers to a cone where the resulting force exerted by one flat horizontal surface on another is to be located while both surfaces are at rest and determined by the coefficient of static friction.
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true or false? air-source heat pumps are the most efficient type of heat pump because they access a renewable energy source and have the highest cooling efficiency and lowest annual operating costs.
Answers
Answer:
True
Explanation:
True. Air-source heat pumps are considered the most efficient type of heat pump because they access a renewable energy source, which is the air outside the building, and they have the highest cooling efficiency and lowest annual operating costs compared to other types of heat pumps.
They are also considered environmentally friendly because they do not produce greenhouse gases. However, the efficiency of air-source heat pumps can be affected by extreme temperatures, so they may not be suitable for all climates.
research is a careful and systematic study and investigation in some field knowledge.To be so,it involves
Answers
Defining the circumstances that require research action, as well as a comprehensive examination of the history and references.
A rigorous and methodical study and inquiry of some area expertise is referred to as research.
A "systematic inquiry" is a planned activity that includes data gathering (mathematical or subjective) and analysis in order to discuss the issue.
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Matlap
For the code below cntr mm 0; for i = 1:3:11 cntr = cntr i; end 1. How many iterations occur? 2. What is the final value of cntr? Check
Answers
The output will be 22, confirming that the final value of cntr is indeed 22.
In the given MATLAB code:
matlab
Copy code
cntr = 0;
for i = 1:3:11
cntr = cntr + i;
end
How many iterations occur?
The loop iterates 4 times because the loop variable i starts at 1 and increments by 3 until it reaches or exceeds 11. The values of i in each iteration are 1, 4, 7, and 10.
What is the final value of cntr?
The final value of cntr is the sum of the loop variable i in each iteration. So, cntr = 1 + 4 + 7 + 10 = 22.
To verify this, you can run the code in MATLAB and display the value of cntr using the disp function:
matlab
Copy code
cntr = 0;
for i = 1:3:11
cntr = cntr + i;
end
disp(cntr);
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Search for the patter "barbarb" in a text "barbarabarbarb" using Horspool's and Boyer-Moore Algorithms. Assume that the text comprises English letters only. How many comparisons and shifts do you need to do before finding the pattern? Show details according each algorithm (e.g. m building shift table, etc). Jiben ut avion of borip 918 2q9t2 beliste bobivor 203682 sdt al anoitesup gniwollot de wan ..ii
Answers
Horspool’s Algorithm: It is a string search algorithm that belongs to the family of shift or delta algorithms. The algorithm searches the given pattern in the given text by matching the final characters of the pattern with the text until the end of the pattern is reached. Then, if there is no match, the pattern is shifted by a fixed amount and the process is repeated.
The algorithm uses a table of shift values to determine how many positions the pattern can be shifted based on the character that caused the mismatch.To search for the pattern "barbarb" in the text "barbarabarbarb" using Horspool’s Algorithm, the following steps can be followed:Build a shift table for the pattern. The shift table contains the number of positions that the pattern can be shifted based on the character that caused the mismatch. The shift table for the pattern "barbarb" is shown below:b a r b a r b b a r bPosition 1 2 3 4 5 6Shift 6 5 4 3 2 1 1 1 1 1Match the pattern with the text starting from the end of the pattern. If there is a match, move one character to the left until the beginning of the pattern is reached. If there is a mismatch, shift the pattern by the number of positions specified in the shift table based on the character that caused the mismatch and start again from the end of the pattern.Continue the process until the pattern is found or the end of the text is reached.To search for the pattern "barbarb" in the text "barbarabarbarb", the following comparisons and shifts are needed:Comparison:Text Position Pattern Position Shift Value Text Character Pattern Character
1 7 1 r b2 6 2 a a3 5 2 b b4 4 2 a a5 3 2 r r6 2 2 b b7 1 2 a a
Shift: 2 (based on the character 'a')Comparison:
Text Position Pattern Position Shift Value Text Character Pattern Character9 9 1 r b10 8 2 a a11 7 2 b b12 6 2 a a13 5 2 r r14 4 2 b b15 3 2 a a
Shift: 2 (based on the character 'a')Comparison:
Text Position Pattern Position Shift Value Text Character Pattern Character16 7 1 r b17 6 2 a a18 5 2 b b19 4 2 a a20 3 2 r r21 2 2 b b22 1 2 a aShift: 2 (based on the character 'a')The pattern "barbarb" is found after 22 comparisons and 3 shifts.Boyer-Moore
Algorithm: The Boyer-Moore Algorithm is a string search algorithm that is more efficient than the brute-force algorithm and is used to search for patterns in a given text. The algorithm compares the pattern and the text from right to left instead of left to right, and uses two tables to determine the maximum shift value and the bad character shift value for each character in the pattern.To search for the pattern "barbarb" in the text "barbarabarbarb" using Boyer-Moore Algorithm, the following steps can be followed:Build a bad character shift table for the pattern. The bad character shift table contains the maximum shift value based on the character in the text that caused the mismatch. If the character does not exist in the pattern, the shift value is the length of the pattern. The bad character shift table for the pattern "barbarb" is shown below:b a r b a r bPosition 1 2 3 4 5 6Shift 1 3 5 2 4 6Match the pattern with the text from right to left. If there is a match, move one character to the left until the beginning of the pattern is reached. If there is a mismatch, shift the pattern by the maximum of the bad character shift value and the maximum shift value based on the last character of the pattern that matches the text.Continue the process until the pattern is found or the end of the text is reached.To search for the pattern "barbarb" in the text "barbarabarbarb", the following comparisons and shifts are needed:Comparison:Text Position Pattern Position Shift Value Text Character Pattern Character1 7 1 r b2 6 2 a a3 5 6 b b4 0 6 b bMatch: The pattern "barbarb" is found after 4 comparisons and 0 shifts.The total number of comparisons and shifts needed to find the pattern "barbarb" using Horspool's and Boyer-Moore Algorithms are shown below:Horspool's Algorithm:Comparisons: 22Shifts: 3Boyer-Moore Algorithm:Comparisons: 4Shifts: 0
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a) In the power system, signs and symbols are very important for analyzing large system components. Identify and write short note on the symbols presented above.
Answers
Important for analyzing large system components to Identify:
What is system?
System is a collection of interrelated components which work together to achieve a common goal or objectives. It is an organized set of elements which interact to produce a unified outcome.
System can be physical or abstract, natural or engineered, designed or emergent. Examples of systems include the solar system, the human body, economic systems, computer systems, social systems, ecological systems, and physical systems.
System thinking focuses on how the components of a system interact and how the system interacts with its environment in order to better understand how the system operates.
1) Symbol for Generator: This symbol is used to represent a generator in a power system. It consists of two circles connected by a line and is used to denote a device that produces electrical energy.
2) Symbol for Motor: This symbol is used to represent a motor in a power system. It consists of two arrows pointing away from each other and is used to denote a device that consumes electrical energy to produce mechanical energy.
3) Symbol for Transformer: This symbol is used to represent a transformer in a power system. It consists of two circles connected by two lines and is used to denote a device that is used to transfer electrical energy between two circuits.
4) Symbol for Resistor: This symbol is used to represent a resistor in a power system. It consists of two zigzag lines and is used to denote a device that resists the flow of electrical current.
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if both the ram air input and drain hole of the pitot system become blocked, the indicated airspeed will
Answers
If both the ram air input and drain hole of the pitot system become blocked, the indicated airspeed will: a) increase during a climb.
What is a ram air input?A ram air input can be defined as an air intake system which is designed and developed to use the dynamic air pressure that is created due to vehicular motion, or ram pressure, in order to increase the static air pressure within the intake manifold of an internal combustion engine of an automobile.
This ultimately implies that, a ram air input allows a greater mass-flow of air through the engine of an automobile, thereby, increasing the engine's power.
In conclusion, indicated airspeed will increase during a climb when both the ram air input and drain hole of the pitot system become blocked.
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Complete Question:
If both the ram air input and drain hole of the pitot system become blocked, the indicated airspeed will
a) increase during a climb
b) decrease during a climb
c) remain constant regardless of altitude change
Explain any three ways research can facilitate the work of building technicians
Answers
According to the research, research can facilitate the work of building technicians in the conception, materials to use and planning of the project.
What are building technicians?They are experts in construction projects, supporting the design of plans, estimating costs, planning work methods, etc.
Research can facilitate the work of building technicians in the following ways:
Conception, design and planning of the project.Selection of materials for floor, wall and ceiling systems.Carry out the programming of works, budgets and analysis of unit prices.Therefore, we can conclude that according to the research, research can facilitate the work of building technicians in the conception, materials to use and planning of the project.
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A 360 kg/min stream of steam enters a turbine at 40 bar pressure and 100 degrees of superheat. The steam exits the turbine as a 100% saturated vapor at a pressure of 5 bar. Write and simplify the appropriate energy balance and then determine the energy generated by the steam as it passes through the turbine in kW.
Answers
skskkdkdkfkgkgkgkkgkgkgigooigigi lol
Explanation:
Oof
Macon Controls produces three different types of control units used to protect industrial equipment from overheating. Each of these units must be processed by a machine that Macon considers to be their process bottleneck. The plant operates on two 8-hour shifts, 5 days per week, 52 weeks per year. The table below provides the time standards at the bottleneck, lot sizes, and demand forecasts for the three units. Because of demand uncertainties, the operations manager obtained three demand forecasts (pessimistic, expected, and optimistic). The manager believes that a
30
percent capacity cushion is best.
LOADING...
Time Standard
Demand Forecast
Component
Processing
(hr/unit)
Setup
(hr/lot)
Lot Size
(units/lot)
Pessimistic
Expected
Optimistic
A
0.04
1.0
60
15,000
16,000
27,000
B
0.30
4.7
75
10,000
12,000
18,000
C
0.05
8.7
100
16,000
24,000
35,000
a. How many machines are required to meet minimum (Pessimistic) demand, expected demand, and maximum (Optimistic) demand? (Enter your responses rounded up to the next whole number.)
b. How many machines are required if the operations manager decides to double lot sizes?
c. If the operations manager has three machines and believes that the plant can reduce setup time by 20 percent through process improvement initiatives, does that plant have adequate capacity to meet all demand scenarios without increasing lot sizes?
Answers
To meet the demand for component A without increasing lot sizes, 192.86 machines are required, exceeding the available 3 machines.
a. Calculation of machines required for minimum (Pessimistic) demand:
For component A, Processing (hr/unit) = 0.04
Lot Size (units/lot) = 60
Total demand required for pessimistic forecast = 15,000 machines
For pessimistic forecast, the processing time required will be: 15,000 × 0.04 = 600 hours
Setup (hr/lot) = 1.0
For 30% capacity cushion, the total operating hours will be: (600 / (1 - 0.3)) = 857.1428571428571
For expected forecast, the processing time required will be: 16,000 × 0.04 = 640 hours
For 30% capacity cushion, the total operating hours will be: (640 / (1 - 0.3)) = 914.2857142857142
For optimistic forecast, the processing time required will be: 27,000 × 0.04 = 1080 hours
For 30% capacity cushion, the total operating hours will be: (1080 / (1 - 0.3)) = 1542.857142857143
Therefore, the machines required will be:
107.14 machines for pessimistic forecast
114.29 machines for expected forecast
192.86 machines for optimistic forecast
b. Calculation of machines required if the operations manager decides to double lot sizes:
Pessimistic forecast: 120 units/lot
Expected forecast: 150 units/lot
Optimistic forecast: 200 units/lot
The calculation of the total operating hours and machines required will be the same as in part a, with the respective lot sizes.
c. Calculation of the number of machines required with 20% reduced setup time:
New setup time for component A: 0.8 hours/lot
The calculation of the new processing hours and machines required will be the same as in part a, with the reduced setup time.
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In a pnp transistor, which is current carriers
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Malala
Akamai
Select the correct text in the passage.
Identify which of the following sentences describes the working of a piezoelectric gauge.
Answers
Answer:
The gauge converts the charge into a measurable electrical signal.
Explanation:
trust me
With direct fuel injection the gasoline is injected:
Answers
Answer:
Gasoline is injected directly into the cylinder.
Explanation:
In a direct injection system, the air and gasoline are not pre-mixed. Rather, air comes in using the intake manifold, while the gasoline is injected directly into the cylinder.
Which of the following characteristics of an object-oriented programming language restricts behavior so that an object can only perform actions that are defined for its class?
Polymorphism
Inheritance
Encapsulation
Answers
Programmers who use object-oriented methods consider in terms of a class instance that has its own properties and behaviours, which is how they vary from those who use procedural methods.
Procedural programming tackles applications by managing difficulties using a top-down method where it solves problems from the top of the code and to the bottom, whereas object-oriented programming is known to be one that employs classes and objects. A programming design strategy known as procedural programming attempts to break down clearly specified tasks into modules, functions, etc. In object-oriented programming, objects are only the individual parts of a programme. The (c) Method defines the behaviour of objects. The behaviour of objects is defined through methods, which are merely functions and subroutines. Consider the following approach, for instance: Public static int (int I Fibonacci
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Technician A says that the refractometer reading is determined at the point of the scale where the dark and light areas meet. Technician B says that the reading is determined by where a dial points on a scale. Who is correct
Answers
Answer:
Technician B says that the reading is determined by where a dial points on a scale.
Explanation:
A refractometer is a devise used by scientists to gauge a liquids index of refraction.
The refractive index of a liquid is the ratio of light velocity of a specific wavelength in air to its velocity in the substance in evaluation.
The steps of reading a measurement are;
point the front of the refractometer towards the light source and view into the eyepieceYou will see the line outlined at a different point on the refractometer's internal indexRead the point on the index at which the line falls
17. which statement best describes this mayan pyramid? a. it is built using hypostyle construction techniques. b. it is built using load-bearing construction techniques. c. it is built using post-and-lintel construction techniques. d. it is built using a combination of load-bearing construction techniques and classical orders.
Answers
They were made of stone blocks that were held together with lime mortar. Some were plastered over and painted.
Explain Mayan pyramid?Their primary goal was religious in nature. In fact, the pyramids were such an important part of Maya religion that they built two types of pyramids to help them worship the gods. Although both types of pyramids appear identical, they were used in very different ways.The ancient Maya used mathematics to support a wide range of daily activities, from market transactions to predicting eclipses and performing complex calendar calculations. Maya mathematics is vigesimal, which means that it counts by twenties rather than tens.To learn more about Mayan pyramid refer to :
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procedure for replacing wheel cylinder seals
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Before we go into the specifics of the brake job, you should be aware that wheel cylinders are always replaced in pairs, even if one is trouble-free.
What is wheel cylinder?A part of a hydraulic drum braking system is a wheel cylinder. It is a part of every wheel and is often found above the shoes at the top of the wheel.
Its purpose is to apply pressure to the shoes in order to bring them into contact with the drum and cause friction to stop the vehicle.
The Wheel Cylinder applies pressure to the brake shoes in a drum brake system, and the brake shoes' contact with the drum causes the vehicle to slow down and come to a stop.
At the drum brake, raise the car. In the owner's manual, find the drum brake section.Examine your brake seals. Find the brake seals in the owner's manual for your car. Verify whether they are worn out or damaged visually.Remove the brake wheel, step 3.Thus, this can be the procedure to change the wheel cylinder seal.
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Which battery cable is bolted to the vehicle frame to allow the metal structure of the vehicle to serve as a large conductor to carry current?
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Answer:
The Negative battery cable is used to bolt the vehicle frame to allow the metal structure of the vehicle to serve as a large conductor to carry current.
Explanation:
Battery cable is large automotive cable. Like smaller types of automotive wire, it is available in PVC and cross-linked forms. Click here to read an earlier post explaining the differences between PVC and cross-linked wire insulation.
One type of PVC battery cable is SGT cable. It is rated to 80°C and therefore can be used in starters or battery grounds. Cross-linked battery cables can also be used in starter and battery ground applications, and they are more resistant to heat, abrasion, and aging than PVC cable.
Two types of cross-linked battery cable are SGX and STX. They are rated to 125°C. Of the three types of battery cable (SGT, SGX, amd STX), STX has the thinnest wall, making it a popular choice for automotive applications with limited space.
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Which of the following factors is not considered when OSPF determines the best path for a packet? a. Link failure. b. Number of hops. c. Throughput. d. Latency.
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c. Throughput. The factor that is not considered when OSPF determines the best path for a packet is Throughput. OSPF calculates the best path based on the link cost.
Open Shortest Path First (OSPF) is a routing protocol used to determine the best path for data packets in a network. OSPF calculates the cost of each possible path based on several factors, such as the number of hops, the bandwidth, and the latency. However, it does not consider the throughput of the network. Throughput is the amount of data that can be transmitted over a network in a given period of time, and it is affected by factors such as network congestion, packet loss, and the quality of the physical media. Therefore, OSPF may not always choose the most efficient path in terms of throughput.
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A cylindrical specimen of steel has an original diameter of 12.8 mm. It is tested in tension its engineering fracture strength is found to be 460 MPa. If the cross-sectional diameter at fracture is 10.7 mm, determine (max. pts. 8): a. The ductility in terms of percent reduction in area b. The true stress at fracture
Answers
Answer:
a) The ductility = -30.12%
the negative sign means reduction
Therefore, there is 30.12% reduction
b) the true stress at fracture is 658.26 Mpa
Explanation:
Given that;
Original diameter \(d_{o}\) = 12.8 mm
Final diameter \(d_{f}\) = 10.7
Engineering stress \(\alpha _{E}\) = 460 Mpa
a) determine The ductility in terms of percent reduction in area;
Ai = π/4(\(d_{o}\) )² ; Ag = π/4(\(d_{f}\) )²
% = π/4 [ ( (\(d_{f}\) )² - (\(d_{o}\) )²) / ( π/4 (\(d_{o}\) )²) ]
= ( (\(d_{f}\) )² - (\(d_{o}\) )²) / (\(d_{o}\) )² × 100
we substitute
= [( (10.7)² - (12.8)²) / (12.8)² ] × 100
= [(114.49 - 163.84) / 163.84 ] × 100
= - 0.3012 × 100
= -30.12%
the negative sign means reduction
Therefore, there is 30.12% reduction
b) The true stress at fracture;
True stress \(\alpha _{T}\) = \(\alpha _{E}\) ( 1 + \(E_{E}\) )
\(E_{E}\) is engineering strain
\(E_{E}\) = dL / Lo
= (do² - df²) / df² = (12.8² - 10.7²) / 10.7² = (163.84 - 114.49) / 114.49
= 49.35 / 114.49
\(E_{E}\) = 0.431
so we substitute the value of \(E_{E}\) into our initial equation;
True stress \(\alpha _{T}\) = 460 ( 1 + 0.431)
True stress \(\alpha _{T}\) = 460 (1.431)
True stress \(\alpha _{T}\) = 658.26 Mpa
Therefore, the true stress at fracture is 658.26 Mpa
Differentiate between routine operating decisions and non-routine operating decisions with suitable examples. List all non-routine operating decisions and explain any two decisions with suitable examples.
Note: Your answer must include numerical examples for each method along with qualitative consideration.
I want the solution clear and tidy, I do not want the handwriting because it is not clear
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Routine operating decisions: Day-to-day decisions following established procedures with minimal risk. Non-routine operating decisions: Strategic decisions with significant impact requiring higher-level analysis .
Routine operating decisions and non-routine operating decisions are two types of decisions made within an organization. Let's differentiate between them and provide examples for each:
1. Routine Operating Decisions:
Routine operating decisions refer to the day-to-day decisions that are part of regular operational activities within an organization. These decisions are repetitive, standardized, and based on established procedures or guidelines. They are typically made by lower-level managers or employees and involve minimal risk and complexity. Examples of routine operating decisions include:
a. Purchasing office supplies: A company regularly needs to restock office supplies such as pens, paper, and printer ink. The decision to purchase these supplies is routine because it follows a standard procedure and is based on factors like inventory levels, usage rates, and budget allocations.
Quantitative example: The office manager determines that the current supply of printer ink is running low and decides to order 10 ink cartridges at a cost of $20 each, based on the average monthly usage.
b. Scheduling employee shifts: A retail store needs to create weekly schedules for its employees to ensure adequate coverage during business hours. The decision to assign shifts is routine because it follows predefined rules, such as considering employee availability and ensuring compliance with labor laws.
Quantitative example: The store manager reviews employee availability and assigns shifts for the upcoming week, ensuring that there are at least three employees present during peak hours each day.
2. Non-routine Operating Decisions:
Non-routine operating decisions are more significant and strategic in nature. They involve higher levels of management and often require a thorough analysis of multiple factors and potential outcomes. These decisions are not part of daily operations and have a greater impact on the organization. Examples of non-routine operating decisions include:
a. Launching a new product line: A company wants to introduce a new product line to expand its market reach. This decision requires market research, financial analysis, and production capacity assessment to determine the feasibility and potential profitability of the new product.
Quantitative example: The company's marketing team conducts a market analysis, estimating the demand for the new product and projecting potential sales revenue. They determine that launching the product will require an initial investment of $500,000 and expect to generate $1.5 million in sales within the first year.
b. Implementing a new technology system: An organization decides to upgrade its existing technology infrastructure by implementing a new enterprise resource planning (ERP) system. This decision involves evaluating different vendors, considering the system's compatibility with existing processes, estimating implementation costs, and assessing potential benefits.
Quantitative example: The IT department conducts a cost-benefit analysis of various ERP systems and estimates that implementing System A will cost $1 million upfront but will result in annual cost savings of $500,000 and improved operational efficiency over the next five years.
Non-routine operating decisions require careful consideration of quantitative factors, such as financial projections and costs, as well as qualitative factors, such as market trends, strategic alignment, and long-term organizational goals.
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a turboprop engine consists of a diffuser, compressor, combustor, turbine, and nozzle. the turbine drives a propeller as well as the compressor. air enters the diffuser with a volumetric flow rate of 83.7 m3/s at 40 kpa, 240 k, and a velocity of 180 m/s, and decelerates essentially to zero velocity. the compressor pressure ratio is 10 and the compressor has an isentropic efficiency of 85%. the turbine inlet temperature is 1140 k, and its isentropic efficiency is 85%. the turbine exit pressure is 50 kpa. combustion occurs at constant pressure. flow through the nozzle and diffuser is isentropic. using air-standard analysis determine: (a) power delivered to the propeller in mw, and (b) the velocity at the nozzle exit, in m/s. neglect kinetic energy except at the diffuser inlet and the nozzle exit.
Answers
(a) The power delivered to the propeller in mw is 10.00457 MW.
(b) The velocity at the nozzle exit, in m/s is 296.4 m/s.
What is velocity?The rate of motion and direction of an object are measured by a vector known as velocity. As a result, in order to calculate velocity using this definition, we must be familiar with both the magnitude and direction.
For example, if an object travels westward at 5 meters per second (m/s), its velocity to the west will be 5 m/s. The most common and simplest way to calculate velocity is using the formula shown below:
r = d / t
where,
r denotes the rate (sometimes denoted as v, representing velocity)
d is the distance travelled by the object.
t is the amount of time it took the object to complete the movement.
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