20kVA, 300/240 V, 50Hz singal phase transformer has 80 turns on secondary winding. calculate number of primary winding turns, full load primary & secondary currents & maximum value of flux in the core.
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Thank uh !
Answers
The number of primary winding turns is 100 turns.
The full load primary & secondary currents are 66.66 A and 53.33 A.
The maximum value of flux in the core is 23.88 Weber.
What is transformer?A transformer transfers electric energy from one AC circuit to one or more other circuits, either stepping up or stepping down the voltage.
a) Turns ratio N₁/N₂ = V₁/V₂ where N₁ = number of turns of secondary coil = 80 turns, N₂ = number of turns of secondary coil , V₁ = voltage in primary circuit = 300 V and , V₂ = voltage in secondary circuit = 240 V
Substitute the values and we get
N₁ =V₁/V₂ x N₂
N₁= 300/240 x 80
N₁= 100 turns
Thus, the number of primary winding turns is 100 turns.
b) Power = V₁ I₁
20 x1000 = 300 x I₁
I₁ = 66.66 A
Turn ratio also represented as N₁/N₂ = I₂/I₁
Put the values, we have current in secondary circuit is
I₂ = N₂/N₁ x I₁
I₂= 80/100 x 66.66
I₂= 53.33 A
Thus, the current in the primary and secondary circuit is 66.66 A and 53.33 A.
c) Maximum flux equals (√2Vrms) / (N₁ x ω).
The rms voltage is Vrms = V₁ /√2
Vrms = 300/√2 = 212.1 V
The angular frequency ω = 2π /f
ω = 2π /50= 0.1256 rad/s
Substitute the values into the expression, we get
Φmax = (√2Vrms) / (N₁ x ω).
= (√2 x 212.1) / (100 x 0.1256)
=23.88 Weber
Thus, the maximum flux is 23.88 Weber.
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Related Questions
A plane lands and comes to a complete stop through 180 m of runway with a deceleration of 6.25 m/s2 [N]. Determine the plane’s velocity when it first touched the landing strip.
Answers
Answer:
47.43 m/s
Explanation:
Given that,
Final speed of a plane, v = 0
Distance, d = 180 m
Acceleration of the plane, a = -6.25 m/s² (deceleration )
We need to find the plane's velocity. Let it was u. So, using the third equation of kinematics as :
\(v^2-u^2=2ad\\\\u^2=0^2-2\times (-6.25)\times 180\\\\u=\sqrt{2250} \\\\u=15\sqrt{10}\ m/s\\ \\\text{or}\\\\u=47.43\ m/s\)
So, the plane's velocity when it first touched the landing strip is 47.43 m/s.
using the δg values calculated at room temperature and ice-bath temperature, does the solvation of borax favors products or reactants? explain.
Answers
The δg values calculated at room temperature and ice-bath temperature can be used to determine whether the solvation of borax favors products or reactants.
If the δg value at room temperature is negative, it means that the reaction favors the products, while if it is positive, the reaction favors the reactants. On the other hand, if the δg value at ice-bath temperature is negative, it means that the reaction favors the reactants, while if it is positive, the reaction favors the products.
Therefore, by comparing the δg values calculated at room temperature and ice-bath temperature, we can determine whether the solvation of borax favors the products or the reactants. If the δg value is more negative at room temperature than at ice-bath temperature, it means that the solvation of borax favors the products. Conversely, if the δg value is more negative at ice-bath temperature than at room temperature, it means that the solvation of borax favors the reactants.
In summary, the solvation of borax may favor the products or the reactants depending on the temperature and the δg values calculated.
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an elevator cab is pulled upward by a cable. the cab and its single occupant have a combined mass of 2200 kg. when the occupant drops a coin, its acceleration relative to the cab is 6.00 m/s2 downward. what is the tension in the cable?
Answers
The tension in the cable is 13,200N
What do you mean by term "Tension"?Tension is a force that runs the length of a medium, particularly one that is flexible like a rope or cable. An action-reaction pair of forces acting at each end of the aforementioned elements is what is referred to as tension.
The combined mass of the cab and elevator is =2200 kg
acceleration of coin with respect to the elevator =6.00 \(m/s^{2}\)
\(a_{ce} = a_{cg} -a_{eg}\)
\(a_{eg} = -9.8 + 6.0\)
\(a_{eg} =3.8 m/s^{2}\)
\(T = M (g - a_{eg} )\)
= 2200 kg (9.8 - 3.8)
=13,200N
The tension in the cable is 13,200N
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Conclusion for simple pendulum with aim to determine acceleration due to gravity
Answers
In conclusion, the experiment aimed to determine the acceleration due to gravity by measuring the period of a simple pendulum. The experiment was performed by measuring the length of the pendulum and recording the time for 10 oscillations. The data was then used to calculate the average period and subsequently, the acceleration due to gravity using the formula: g = (4π²L)/T².
Based on the results obtained, the acceleration due to gravity was found to be (9.79 ± 0.06) m/s², which is in good agreement with the accepted value of 9.81 m/s². The small discrepancy could be due to the experimental errors such as air resistance, friction and measurement errors.
Overall, the experiment was successful in determining the acceleration due to gravity using a simple pendulum and demonstrated the relationship between the period and the length of the pendulum.
what kind of mirror do u think s used in the side-view mirror of cars?
Answers
Answer:
The Convex Mirror is used.
Explanation:
he more gentle the
[ Select Speed, Vector, Slope and Reaction
of the line on the distance v. time graph, the
[ Select Slower or Faster
the object is moving.
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A boat can travel 15 m/s when there is no ocean current. If the ocean current has a velocity of 3 m/s that is going directly East, which way should the boat steer to move directly North if the boat is moving at 15 m/s?
Answers
15*15=225(m) boat speed
a cycle lasts for 8 seconds. what is the frequency
Answers
This frequency definition leads us to the simplest frequency formula: f = 1 / T . f denotes frequency and T stands for the time it takes to complete one wave cycle measured in seconds. The SI frequency unit is Hertz (Hz), which equals 1/s (one cycle per second)
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Explain how series circuits use current and voltage and Explain how parallel circuits use current and voltage
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'''In a series circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage. Components connected in parallel are connected along multiple paths so that the current can split up; the same voltage is applied to each component.''
Joel the firefighter, standing 45 m from a burning building, directs a stream of water from a ground level fire hose at an angle of 25 degrees above the horizontal. The Vi of the stream as it leaves the hose is 55 m/s. What is the water’s Vix?
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which of the following is an advantage of digital imaging? increased patient radiation exposure, increased chemical usage, increased speed for viewing images
Answers
One of the advantages of digital imaging is increased speed for viewing images.
Digital imaging is a technology that enables doctors to take X-rays, MRIs, CT scans, and other medical images, and store them digitally.
Digital imaging provides many advantages over traditional film-based imaging, such as increased speed for viewing images.
Digital imaging is a medical technology that allows physicians to take, store, and view medical images in digital form. Digital imaging includes modalities such as X-rays, computed tomography (CT), magnetic resonance imaging (MRI), and ultrasound.
Digital imaging provides several benefits, such as increased speed, improved diagnostic accuracy, lower radiation exposure, and reduced chemical usage. It also enables doctors to view images in real-time, making it easier to detect and diagnose medical conditions.
Additionally, digital images can be easily shared between medical professionals, allowing for better communication and collaboration.
The advantages of digital imaging include increased speed for viewing images. Instead of waiting for film-based images to be developed, doctors can view digital images instantly. This can be particularly important in emergency situations, where time is critical.
Digital imaging also allows doctors to manipulate images, zooming in or out as needed, to get a clearer view of the affected area or to identify specific features or abnormalities.
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What is the relationship between pitch and wavelength
Answers
Answer:
Musicians use frequency is pitch.
The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound. The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound. Hope it helps!
What is the kinetic energy of a 5kg ball that is rolling 3m/s?
Answers
Answer:
22.5
Explanation:
As the mass is 5 kg,velocity is 3m/s so the derivation use for kinetic energy is 1÷2 mv*2 . By this derivation we will find out the kinetic energy
2. A cylindrical copper kettle that contains cold water as shown in fig. The kettle is used to heat water and there is an electric heater at the base. a 8D State and explain the advantage of heating the water from below. [1] b) As the water is heated, it expands. (1) Explain, in terms of molecules, why water expands when it is heated. (ii) Copper also expands when heated. State what happens to level X of the water in the kettle.
Answers
The advantage of heating the water from below is that heat rises, and when the heater is at the bottom of the kettle, the heat is transferred more efficiently to the water.
Why should the water be heated from below?There will be less risk of hot or cold spots in the water because the water will heat up more rapidly and uniformly.
Additionally, since the heater will turn off automatically when the water reaches a specified temperature, heating the water from below can prevent the kettle from overheating.
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A kid pushes a stationary
merry-go-round, creating an
acceleration of 0.135 rad/s^2.
How much time does it take the
merry-go-round to complete
2.00 rotations?
(Unit = s)
Remember: CCW is +, CW is. 1 rev= 2*pi rad
Answers
The merry-go-round takes approximately 29.41 seconds to complete 2.00 rotations.
Given data:
Acceleration (α) = 0.135 rad/\(s^2\)
Number of rotations (θ) = 2.00
To find the time taken (t) for 2.00 rotations, we need to use the formula:
θ = 0.5 * α * \(t^2\)
Rearranging the formula, we get:
\(t^2\) = (2 * θ) / α
Plugging in the given values, we have:
\(t^2\) = (2 * 2.00) / 0.135
\(t^2\) = 29.63
Taking the square root of both sides, we find:
t ≈ √29.63
t ≈ 5.439
Therefore, the time taken for the merry-go-round to complete 2.00 rotations is approximately 5.439 seconds.
Note: It's important to round the final answer to an appropriate number of significant figures, considering the given data. In this case, we have used four significant figures in the final answer.
However, if we want to adhere to the given significant figures in the acceleration (0.135 rad/\(s^2\)), the answer should be rounded to three significant figures. In that case, the final answer would be approximately 5.44 seconds.
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Which is most likely to occur, reactions that would raise the potential energy of the molecules, or reactions that lower the potential energy of the molecules?
Answers
Answer:
A
Explanation:
It is more likely reactions that raise the potential energy of the molecules would occur because friction is constantly occurring. Friction leads to more heat, more energy.
Pairs of magnets are shown in the diagram. Bar magnets lined up vertically side by side in pairs. The first pair is labeled W with the north pole beside the south pole of the second. The second pair is labeled X and vertical with the north pole of one near the north pole of the other. The third pair is labeled Y with the south pole of one near the north pole of the other. The last pair is labeled Z and are lined up side by side. The south pole of one is beside the north pole of the second. Which pair of magnets is aligned so they will repel each other?
Answers
Answer:
X
North and South attract. North and North repel and same for South and South. It has to do with the positive electrons in the North and negative in the south.
Explanation:
B ON EDG:)
BARAINLIEST?
Any pair in which like poles face each other, there will be a repulsion.
What is magnetic field?The term magnetic field refers to the region of space in which the influence of a magnet is felt. Magnets have a north and south pole. Like poles of a magnet repel while the unlike poles of a magnet attract.
We do not have the images shown here so we don't know for sure which pair will repel but any pair in which like poles face each other, there will be a repulsion.
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Write a short paragraph that explains how a sport using a ball would be played differently on a planet of your choice. For example, how would gravity affect a basketball game on Saturn? Or how would gravity affect a baseball game on Mercury?
(Doesnt have to be a full paragraph answer I just need a gist of what it is)
Answers
on a different planet I would play a sport similar to soccer. The main difference is that there is zero gravity. To win the game u have to get the ball into the other person's net first.
Explanation:
I was just bored
A book containing the ________ of every incarcerated person has been put on display in los angeles.
Answers
With more than six million books in its collection and 19 million people living in the Greater Los Angeles Area, the system serves the biggest population of any public library system in the country.
The Los Angeles Public Library's size is what?The structure has eight stores with a total area of 538,000 square feet, approximately 89 miles of shelves, and more than 1,400 seats. There are 255 public computers with free access scattered around the building and the Computer Center. Wi-fi enables access to the internet as well.
The largest and most varied population in the country is served by the Los Angeles Public Library. There are four million people living within the library's huge 468 square mile service area, who speak more than 220 different languages.
Residents of 49 of the 88 incorporated cities in Los Angeles County, California, are served by LA County Library, one of the country's biggest public library systems.
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which term describes the process that continually moves water from the ground to the atmosphere and back?
Answers
The word "water cycle" refers to the ongoing process that transfers water from the earth to a atmosphere and back.
Explain the term water cycle?The hydrologic cycle, another name for the water cycle, describes where and how water is kept on Earth.
With in atmosphere, on the surface of the land, and underground, water is kept in reserve. It could be a gas, a liquid, or a solid. Either fresh or salt water can be a liquid (salty).Water flows between its storage locations. It flows on both extremely tiny scales and very big scales (via watersheds, through atmosphere, and beneath the Earth's surface) Water flows both naturally and as a result of human activity. The motion of Earth's water is sustained by the gravity force and solar energy. The water cycle is impacted by human activity because it changes where water is.Thus, the term "water cycle" refers to the ongoing process that transfers water from the earth to a atmosphere and back.
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50 POINTS!
Look at the HR diagram below with four stars labeled. The HR diagram is shown with absolute brightness on the vertical axis and surface temperature in degree Celsius on the horizontal axis. The dwarf stars are plotted along a slant from coordinates 30,000 and negative 3 to 10,000 and negative 4. The main sequence stars are plotted along a slant from coordinates 20,000 and negative 2 to 2,000 and negative 6. The giants are plotted horizontally from coordinates 5,000 and 2 to 2,000 and 3. The supergiants are plotted horizontally from coordinates 7,500 and 4 to 2,500 and 4. Four stars are plotted: A is at 20,000, negative 4, B is at 2,500, negative 4, C is at 5,000, 2, and D is at 6,000, 4. Which statement is correct about Star A and Star C? They have the same color because they are neighboring stars. They have the same brightness because they are neighboring stars. They have different colors because they have different temperatures. They have different brightness because they are the same size.
Answers
The correct statement is that "They have different colors because they have different temperatures."
What are supergiant stars?
The most massive and brightest stars are known as supergiants. Supergiant stars range in temperature from roughly 3,400 kelvin to over 20,000 kelvin, whereas their absolute visual magnitudes range from 3 to 8.
In light of this, we may say that supermassive stars are a particular form of a star with an absolute brightness of about 3 and a surface temperature of about 20,000 °C.
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2. Decode the following station models: a. Temp = Dew point = Wind direction - Wind speed = b. Temp = Dew point = Wind direction = Wind speed = c. Temp = Dew point = Wind direction = Wind speed 3. Using the following observations, draw a station model for each city. City A: Temp = 68°F Dew point = 47°F Wind is south at 15 knots о HOUD2 City B: Temp = 91°F Dew point = 330F Wind is southwest at 20 knots O City C: Temp = 32°F Dew point = 31°F Wind is north at 35 knots DO O regions of Old Mexico and southern New Mexico.
Answers
Decoding of station models is
a. Temperature and dew point are equal, wind direction is opposite to wind speed.
b. Temperature, dew point, wind direction, and wind speed are all equal.
c. Temperature, dew point, wind direction, and wind speed are all equal.
a. In this station model, the temperature and dew point are equal, indicating that the air is saturated with moisture. The wind direction is opposite to the wind speed, which means the wind is blowing from the north towards the south at a speed of 15 knots.
b. In this station model, the temperature, dew point, wind direction, and wind speed are all equal, indicating calm weather conditions.
c. In this station model, the temperature, dew point, wind direction, and wind speed are all equal, indicating freezing temperatures and strong winds blowing from the north at a speed of 35 knots. The small "DO" circle indicates blowing snow in the regions of Old Mexico and southern New Mexico.
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a 1500-kg elevator accelerates downward at 2.8 m/s2. what is the tension in the cable supporting the elevator?
Answers
The tension in the cable supporting the elevator is 15,900 N.
The weight of the elevator is given by W = mg, where m is the mass of the elevator and g is the acceleration due to gravity (9.81 m/s^2). Therefore, the weight of the elevator is W = 1500 kg × 9.81 m/s^2 = 14,715 N.
Since the elevator is accelerating downward, there must be a net downward force acting on it. The tension in the cable supporting the elevator is one of the forces acting on it, and it is directed upward. Therefore, the net force acting on the elevator can be expressed as T - W = ma, where T is the tension in the cable, a is the acceleration of the elevator, and m is the mass of the elevator.
Substituting the given values into the equation, we get:
T - W = ma
T - 14,715 N = (1500 kg)(-2.8 m/s^2)
T = 15,900 N
Therefore, the tension in the cable is 15,900 N.
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A 3.0 kg block is pushed from rest up a frictionless 20° slope with a 16.0 N force acting parallel to the incline. How far did the block travel in 2.0 seconds?
Answers
The force parallel to the slope is given by F = mgsin(20°), where m is the mass of the block and g is the acceleration due to gravity. Plugging in the values, we get:
F = (3.0 kg)(9.81 m/s^2)sin(20°) = 9.81 N
This is the net force acting on the block parallel to the slope. Using Newton's second law, we can find the acceleration of the block as:
a = F/m = 9.81 N / 3.0 kg = 3.27 m/s^2
Since the slope is frictionless, there is no opposing force, and the entire force parallel to the slope goes towards accelerating the block.
Now, to find the distance traveled by the block in 2.0 seconds, we can use the kinematic equation:
x = (1/2)at^2
where x is the distance traveled, a is the acceleration, and t is the time. Plugging in the values, we get:
x = (1/2)(3.27 m/s^2)(2.0 s)^2 = 6.54 meters
Therefore, the block travels 6.54 meters up the slope in 2.0 seconds
Hope this helped!
You can tell from reading this passage that -
the narrator will definitely find a diamond at the Crater of Diamonds State Park.
diamonds are rare, valuable gems.
garnet is as valuable as a diamond.
semi-precious stones are ugly.
Answers
Answer: B or "diamonds are rare,valuable gems".
Explanation:
since the link does not show very much, I don't know if A is correct or not. D is incorrect because that is an opinion. C is incorrect.
What is the twisted ladder shape of the DNA called? 3D model nucleotides double helix single strand
Answers
Answer: double helix
Explanation: Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
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The twisted ladder shape of the DNA called double helix.
What is DNA?A polymer made of two polynucleotide chains that coil around one another to form a double helix is called deoxyribonucleic acid. All known organisms and many viruses have genetic information in the polymer that is necessary for their development, operation, growth, and reproduction.
Nucleic acids include DNA and ribonucleic acid (RNA). Nucleic acids are one of the four main categories of macromolecules that are necessary for all known forms of life, along with proteins, lipids, and complex carbohydrates (polysaccharides).
Because the two DNA strands are made up of simpler monomeric units termed nucleotides, they are referred to as polynucleotides.
Each nucleotide is made up of a phosphate group, a deoxyribose sugar, and one of the four nitrogen-containing nucleobases (cytosine [C], guanine [G], adenine [A], or thymine [T]).
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A 5.6 g marble is fired vertically upward using a spring gun. The spring must be compressed 6.4 cm if the marble is to just reach a target 15 m above the marble's position on the compressed spring. What is the change in the gravitational potential energy of the marble-Earth system during the 15 m ascent
Answers
Answer: im not gonna give i to you just do 15+15=_+ 5.6+6.4 easy
Explanation: i took the test and got a 100%
the sum of kinetic energy of molecules in a body is ______
Answers
during a hard sneeze your eyes might shut for .50s. if you are driving a car at 70 mi/hr during such a sneeze, how far does the car move during that time
Answers
Answer:
About 50 ft.
Explanation:
There is a danger any time you take your eyes off the road. There is also a danger of distraction before and after a sneeze.
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find the height of the roller coaster using two different methods. round your answers to one decimal place.
Answers
If there were no friction and air resistance, an ideal coaster could go down and up hills at the same height eternally. If you want to round to one or two decimal places, look at the digit immediately decimal point.
Roller coasters can reach what heights?Almost always, the start of a roller coaster is a vertical plummet. The automobiles are propelled by a motor to a top of a steep hill, after which gravity takes over completely. Typical vertical fall could be anywhere between 50 and 80 metres high.
How are answers rounded to decimal places?When round a decimal value, there are a few guidelines to remember. To put it another way, it round previous digit down if the final digit is much less than 5. However, you just round the previous figure up if it is 5 or above. Thus, it round number up if 5, 6, 7, 8, or 9 come after the number we are about to round.
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