consider the motor circuit at right. sketch the time-domain signals required at a and b to turn the motor forward at 50% full speed and reverse at 75% full speed. label plot axes and all relevant axis values. assume that the signals are provided by an arduino uno, that speed is proportional to voltage and that the threshold voltage for the transistors is 3.3v, and a vpwm period of 1 msec

In a fixed orifice tube air conditioning (A/C) system, the low-pressure cycling switch is typically located in the low-pressure line or on the accumulator.

The low-pressure line is the refrigerant line that carries the refrigerant from the evaporator (inside the vehicle) back to the compressor (located in the engine compartment). The low-pressure cycling switch is installed in this line to monitor the pressure level of the refrigerant.

The accumulator, also known as the receiver-drier in some systems, is a component that is connected to the low-pressure line. Its primary function is to collect and store excess liquid refrigerant and to remove moisture and debris from the refrigerant stream. The low-pressure cycling switch can also be located on the accumulator.

The purpose of the low-pressure cycling switch is to monitor the pressure in the A/C system and activate or deactivate the compressor based on the preset pressure thresholds. This helps to protect the system from damage caused by low refrigerant levels or other issues.

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Answer: A, B, C or D

Explanation: its either those

Answer:

C). America’s veterans defend our freedom, but they sacrifice their personal ambitions and their lives, and many of them suffer physically and mentally from their experiences.

Explanation:

A good thesis statement must provide the central idea or theme of the paper or the essay in a capsule form along with its theoretical base. The key characteristics of a thesis statement are its arguability, specificity, and intensity. As per these descriptions, the above statement correctly relates the main point('America's...freedom') very clearly and precisely. It also contains the arguability which can be supported through further evidences.

Answer:

True

Explanation:

To summarise, waves carry energy. The amount of energy they carry is related to their frequency and their amplitude. The higher the frequency, the more energy, and the higher the amplitude, the more energy.

❎❎❎❎❎❎❎ sorry but that didn't help me that much

Answer:

A second degree burn would have reddened, swollen skin, with blisters. So yes, your statement would be true.

Answer:

The major factor preventing widespread use of alternative jet fuels is currently the cost of production. Alternative jet fuels are often produced through more expensive and complex processes than traditional jet fuels, such as through the use of biomass or waste materials. Additionally, alternative jet fuels currently have lower economies of scale, as the demand for them is still relatively low. Fuel compatibility with modern engines and fuel stability are also important factors to consider, but significant progress has been made in addressing these issues through testing and certification processes. Octane rating is not a significant factor in jet fuel, as it is a rating used to measure the anti-knock properties of gasoline for use in spark-ignition engines, whereas jet engines use a different type of fuel and combustion process.

Explanation:

The torsion values (twist) of a beam are depicted in this diagram at various points along its length. To examine the internal forces and moments acting on the beam, cuts can be made at these points.

Tau is the torsional shear stress, T is the torque applied to the object or structural part, r is the radius of its cross-section area, and J is the polar moment of inertia. Together, these terms make up the equation Tau equals T times r divided by J.

The torsional moment or torque is another name for the twisting moment. A bending moment will develop when we rotate the end of the bar either clockwise or anticlockwise. T=(G x angle) x J/L is the formula.

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Answer:

a

Explanation:

To identify compounds based on proton NMR spectra, you need to analyze the number of signals (peaks), their chemical shifts (position on the spectrum), and their integration (relative area under each peak).

For each compound spectrum, analyze the chemical shifts to determine the functional groups present. Look for distinct signals that correspond to specific types of protons (e.g., aromatic, aliphatic, hydroxyl, amine). Compare the signals to known chemical shift values for different functional groups. Select at least two distinct signals that help identify the correct compound. Explain why they are diagnostic based on their chemical shift values and integration. Additionally, you can consider the splitting patterns (multiplicity) caused by neighboring protons.

Conclude by stating the compound name and providing a brief summary of the key diagnostic signals used for identification.

Remember to consult the provided spectra and any additional information to accurately identify the compounds.

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A circular rod with a length of 3.1 m and a diameter of 2.6 cm is subjected to an axial load of 60 kN. If the resulting change in length is 3.84 mm, the modulus of elasticity can be calculated using the formula for Young's modulus.

Which is:Young's modulus = (Force × Length) ÷ (Area × Change in length)The force acting on the rod is 60 kN. The length of the rod is 3.1 m. The diameter of the rod is 2.6 cm, which can be converted to meters by dividing by 100, giving a radius of 0.013 m. The area of the rod is given by the formula for the area of a circle, which is:Area = π × r² = π × 0.013² ≈ 0.0005309 m².

The change in length is 3.84 mm, which can be converted to meters by dividing by 1000, giving a change in length of 0.00384 m.Substituting the values into the formula for Young's modulus, we get:Young's modulus = (60,000 × 3.1) ÷ (0.0005309 × 0.00384)≈ 1.96 × 10¹¹ N/m²Therefore, the modulus of elasticity is approximately 1.96 × 10¹¹ N/m².

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The region of convergence corresponding to G(s) will be To = -1 and A = 1

Based on the information given, it should be noted that the value when we evaluate X(s) and specify its region of convergence will be:

X(s( = e^(5 + 5)/(5+5)

= -5.

The region where the function exists in the transfer function's pole/zero plot is known as the Region of Convergence. We prefer to deal with rational functions for the purpose of practical filter design, which may be defined by two polynomials, one for identifying the poles and the other for calculating the zeros, respectively.

The values of the finite numbers A and to such that the Laplace transform G(s) of g(t) = Ae-51 u(-t-to) has the same algebraic form as X(s) will be - 1 and the region of convergence corresponding to G(s) is 1.

Therefore based on the information, the region of convergence corresponding to G(s) will be To = -1 and A = 1.

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Answer:

The amperage draw of the condensing unit will be low.

Explanation:

A condensing unit is made up of a compressor and condenser, while an evaporating unit is made up of an evaporator coil.

A split AC system is a type of air conditioner system that has a condensing unit which is placed separately from the evaporative coil unit. Then the two units are connected to each other via a copper tube containing refrigerants.

The liquid line connects the condenser to the evaporator, and if this liquid line is restricted, the amp consumed by the condensing unit will be low.

Answer:A 4-input NAND gate is normally high. It can only go low when all four of the inputs have a logical high on them. Assuming the circuit should see a condition where all four inputs go high, then a constant high output indicates a fault does exist.The first step in troubleshooting this failure is to verify the circuit, under normal operation should be seeing a condition where all four inputs do go high. It is completely possible that the circuit is working properly and the condition you were expecting simply does not occur. Verifying what your inputs should be allow you to confirm whether a failure exists in reality.Second, you should verify that the logic probe, multi-meter, oscilloscope, logic analyzer, or monitoring circuit you are using to test circuit outputs is working properly. This is easiest done by touching the probe of the monitoring device to another output you should see changing states. In one system I once had to trouble-shoot, the device had a built-in monitoring circuit and the failure was actually in the monitoring circuit rather than in the main circuit. Once you have confirmed that your test equipment is working properly, you can begin testing the actual circuit to troubleshoot the failure.Given that the circuit should be seeing periods where the gate should go low and that your test equipment is working properly, then a constant high output on this gate means either the output of the gate is open (assuming their is a tie-up resistor somewhere on the output line) or at least one of the inputs is being held low. A constant low input could be a failed gate driving one of the inputs, a short to ground on the circuit board trace connected to the constant low input, or a tie-up resistor on the input that has opened (Technically, this last cause creates a floating input which could intermittently be seen as either a high or low, but in my experience is invariably seen as a low.) The only way to determine which fault exists is to measure the voltages on each input pin to determine which input is failing and then trace the constant low back to its source.729 viewsView 1 upvote1Add a comment...Sponsored by Purdue University OnlinePurdue's 100% Online Master's Now Accepting Applications.Earn an online MS in Electrical and Computer Engineering degree in 12-24 months. View curriculum guide.Learn MoreLoring Chien, Electrical Engineer for 45 years & IEEE Sr. Life memberAnswered Jul 2, 2020

Explanation:

Explanation:

Production planning: Planning is ideal so that there are the right resources, at the right time and in the right quantity that can meet the production needs of a period.

Strategies: The strategic development of production is the area that will assist in organizational competitiveness and in meeting consumer demand and needs.

Product and service design: Development of new products and services and their improvement, innovations and greater benefits

Production systems: Study of physical arrangements so that production takes place effectively according to the ideal layout for each type of product or service.

Production capacity planning: Analysis of the short, medium and long term related to production, and identification if necessary to obtain more resources, increase in staff, machinery, etc., to meet present and future demands.

Each area of ​​knowledge acquired will assist in the development of a professional career, as technical knowledge is essential in decision-making, provision, problem solving, the development of new ideas and innovation.

NEC 422.11(E) states that the branch circuit overcurrent protection shall be 20 amperes of the appliance rating if it does not exceed 13.3 amperes and 150 percent of the appliance rating if it draws more than 13.3 amperes when a non-motor-operated electrical appliance lacks an overcurrent protective device rating.

An electrical device that transforms electrical energy into mechanical energy is an electric motor. The majority of electric motors work by creating force in the form of torque applied to the motor shaft through the interaction of the magnetic field of the motor and electric current in a wire winding. Although an electric generator and an electric motor are mechanically identical, an electric generator uses a reversed power flow to transform mechanical energy into electrical energy.

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The pressure a submersible drone would need to withstand 7 miles is given to be 114.49 MPA

Wer have P = rho x H

Where Rho s is the Sp x the weight of the sea water

= 10163 . 16n/m²

We are to proceed to find the value of H

H = 7. 0 miles below sea water

= 11265.408m

P = 11265.408m x 10163 . 16n/m²

= 114,492.144

= 114.49 MPA

Hence we can say that  the pressure of the submersible drone should be equal to 114.49 MPA

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Answer:

no

Explanation:

How many trees would it take to reverse climate change?

1.2 trillion trees

Crowther says planting 1.2 trillion trees would give a reduction "way above" that figure. To put that in context, global CO2 emissions are around 37 billion tons per year.Apr 17, 2019

Boolean circuits are directed acyclic networks with internal nodes (or "gates") that are boolean functions, most frequently and, or, and not, which are considered to be "standard" boolean functions.

The input nodes of a circuit are known as input nodes and are marked with input variables. The output nodes are those having an out-degree of 0. Seven fundamental logic gates are available: AND, OR, XOR, NOT, NAND, NOR, and XNOR. The reason the AND gate is thus named is because it behaves much like the logical "and" operator if 0 is labelled "false" and 1 is labelled "true." The circuit symbol and logic configurations for an AND gate are shown in the accompanying example and table. A. B=Y in Boolean algebra denotes that Y exists when both A and B are true, but not when either of them is true.

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step: 1 of 16

The static thrust is defined as such a force which is developed and applied by the jet engine on the surrounding air or earth when the airplane is at rest condition.

Power is defined as the rate of doing work with respect to time. Power is a scalar quantity and having no direction. The unit of power is J/s  or watt in an hour(w) .

The expression to calculate the resultant power Ps  is,

PRETV  …… (1)

Here, Ps  is the required power, T R  is the required thrust and is the velocity of the airplane at a certain altitude.

The expression for the actual power for two engines is,

P, = 2(TV)  …… (2)

Here, т.  is the actual thrust and  is the velocity of the airplane for a given altitude.

step: 2 of 16

Write the expression for the thrust of an airplane.

TRE W CIC)  …… (3)

Here, T R  is the required thrust, W  is the weight of the airplane, с. is the lift polar coefficient of the airplane and Ср  is the drag polar coefficient of the plane.

Write the expression for the lift polar coefficient of the airplane.

W C 1 2P. Vis  …… (4)

Here, P  is the air density,  is the velocity of the airplane for a given altitude and S  is the wing area.

Write the expression for drag polar coefficient.

C, = CD,0 + C πε(AR)  …… (5)

Here, Сро  is the zero-lift drag coefficient,  is the Oswald’s efficiency factor and AR  is the aspect ratio.

It is clear from the power required curve that maximum velocity at the altitude at 5 km is

Hence, the required maximum velocity at the altitude of 5 km  is295 m/s.

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True. Aggregation is a relationship between objects where one object represents the whole and is composed of other objects, referred to as its parts. It allows the whole object to be constructed by combining or aggregating its constituent parts.

In the context of object-oriented design, aggregation allows objects to be structured hierarchically, with higher-level objects representing the composition or aggregation of lower-level objects. This relationship emphasizes the concept of "has-a" relationship, where an object has other objects as its components or parts.

Aggregation is commonly depicted as a diamond-shaped arrow with a hollow head pointing from the whole object to the parts. It signifies that the whole object has a reference to the parts but does not control their lifecycle. The parts can exist independently of the whole object and may be shared by multiple objects.

Aggregation provides several benefits in software design. It allows for modular and reusable code by promoting component-based development. It enables encapsulation, as the parts can have their own behavior and data that are encapsulated within their respective objects. It also facilitates flexibility and maintainability by allowing changes to the parts without affecting the whole object or other parts.

An example of aggregation is a car object composed of various components such as the engine, wheels, and seats. The car represents the whole object, and the components represent its parts. The car object aggregates the engine, wheels, and seats, but these parts can also exist independently and be shared among other car objects.

In conclusion, aggregation is a concept in object-oriented programming that allows the representation of the relationship between objects where one object is composed of or contains other objects. It provides a means of showing that the whole object is composed of the sum of its parts, promoting modularity, encapsulation, and flexibility in software design.

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A V-8 engine that posses a firing order of 18436572 with number 1 cylinder on compression, the cylinder which would be on the exhaust stroke is number: A. 6.

An injector can be defined as a mechanical device that is designed and developed for the introduction of fuel into the internal combustion system of an engine, especially under pressure.

In Engineering, there are two (2) main types of fuel injection system and these include the following:

A sequential fuel injection is typically designed and developed to spray fuel into the internal combustion system of an engine based on the firing order that is configured within it by the manufacturer.

As a general rule, one of the two-paired spark plugs within the internal combustion system of an engine is always designed to have a negative polarity while the other spark plug is designed to have a positive polarity always.

In this context, we can infer and logically deduce that a V-8 engine that posses a firing order of 18436572 with number 1 cylinder on compression, the cylinder which would be on the exhaust stroke is number 6.

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Complete Question:

The coil polarity in a waste-spark system is determined by the direction in which the coil is wound (left-hand rule for conventional current flow) and can't be changed. for example, if a v-8 engine has a firing order of 18436572 and number 1 cylinder is on compression, which cylinder will be on the exhaust stroke?

A. 6

B. 4

C. 8

D. 2

Answer:

HVACR Industry Trade Groups

Explanation:

Given :

Mass of gasoline , m = 50 kg .

Length of tank , l = 0.9 m.

Breadth of tank , b = 0.5 m .

Relative density of gasoline , R.D = 0.75 .

Density of water , \(\rho_{water}=1000\ kg/m^3\) .

To Find :

The depth of tank .

Solution :

We know ,

\(R.D=\dfrac{\rho_{gasoline}}{\rho_{water}}\\\\\rho_{gasoline}=0.75\times 1000 \ kg/m^3\\\\\rho_{gasoline}=750\ kg/m^3\)

Now , volume of gasoline is :

\(V=\dfrac{m}{\rho_{gasoline}}\\\\V=\dfrac{50}{750}\ m^3\\\\V=\dfrac{1}{15}\ m^3\)

Since , the tank is rectangular , volume is given by :

\(V=l\times b\times h\\\\h=\dfrac{V}{l \times b}\\\\h=\dfrac{1}{15\times 0.9\times 0.5}\ m\\\\h=0.148\ m=14.8\ cm\)

Therefore , the answer in centimetres is 14.8 cm .

Hence , this is the required solution .

Answer:

  14,700 J

Explanation:

PE = Mgh = (75 kg)(9.8 m/s²)(20 m) = 14,700 J

I think Charles law should work here

Answer:

SECTION LEARNING OBJECTIVES

By the end of this section, you will be able to do the following:

Distinguish between static friction and kinetic friction

Solve problems involving inclined planes

Section Key Terms

kinetic friction static friction

Static Friction and Kinetic Friction

Recall from the previous chapter that friction is a force that opposes motion, and is around us all the time. Friction allows us to move, which you have discovered if you have ever tried to walk on ice.

There are different types of friction—kinetic and static. Kinetic friction acts on an object in motion, while static friction acts on an object or system at rest. The maximum static friction is usually greater than the kinetic friction between the objects.

Imagine, for example, trying to slide a heavy crate across a concrete floor. You may push harder and harder on the crate and not move it at all. This means that the static friction responds to what you do—it increases to be equal to and in the opposite direction of your push. But if you finally push hard enough, the crate seems to slip suddenly and starts to move. Once in motion, it is easier to keep it in motion than it was to get it started because the kinetic friction force is less than the static friction force. If you were to add mass to the crate, (for example, by placing a box on top of it) you would need to push even harder to get it started and also to keep it moving. If, on the other hand, you oiled the concrete you would find it easier to get the crate started and keep it going.

Figure 5.33 shows how friction occurs at the interface between two objects. Magnifying these surfaces shows that they are rough on the microscopic level. So when you push to get an object moving (in this case, a crate), you must raise the object until it can skip along with just the tips of the surface hitting, break off the points, or do both. The harder the surfaces are pushed together (such as if another box is placed on the crate), the more force is needed to move them.

Answer:

Step 1: Define the Problem.  

Step 2: Do Background Research. .

Step 3: Specify Requirements. .

Step 4: Brainstorm, Evaluate and Choose Solution.  

Step 5: Develop and Prototype Solution.  

Step 6: Test Solution.

Step 7: Does Your Solution Meet the Requirements?  

Step 8: Communicate Results.

can u tell me the definition tho?

palled correctly as “though” which is an alternate form of “although”) at the end is informal usage. It's better placed before “she seems better today