Q1:If the power factor of an induction motor is measured at 0.8±5%. Calculate the limiting error and the range of the power factor. Also cálculate the range of the phase angle.
Q: 1. A six-pole, three-phase induction motor runs at 970 rev/min at a certain load. If the stator is…
A: Dear,as per company guidelines we can answer only one question at a time, kindly post other question…
Q: A 220-volt, single-phase induction motor draws 15 amps of current when operated on a 60-Hz circuit.…
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Q: A separately excited dc generator has VF= 150, Rp= 10 , Radj= 4 , RA= 0.065 , the prime mover…
A: Field current =voltage across field winding/(total resistance of field circuit). Total resistance of…
Q: Example 1 A 3-phase, 2-pole induction motor is connected to a 50 Hz supply. Determine the…
A: Since you have asked multiple questions in a single request, we will be answering only the 1st…
Q: A separately excited dc motor has the following parameters.' Ra = 1.420, La = 13mH, ke = kr =…
A: EMF constant Ke= 169 V/1000 rpm Armature resistance Ra =1.420 Ω Load torque T=31 Nm Maximum allowed…
Q: An induction motor load of 1500 watts with a power factor of 0.75 is combined with a 500 volt…
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Q: 2. The power input to a 3-phase induction motor is 40 kW. The stator losses total 1 kW and the…
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Q: A 230 V three-phase, Y-connected, 50 Hz, 2-pole induction motor has the following constants in ohms…
A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: Q10/ A 3-phase, 6-pole induction motor is connected to a 60 Hz supply. The voltage induced in the…
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Q: A 12-pole, 3-phase alternator driven at a speed of 500 r.p.m. supplies power to an 8-pole, 3-phase…
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Q: A 400V, 3-phase, wye-connected wound rotor synchronous motor operates at unity pf while developing a…
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Q: We wish to use a 40hp, 1760 r/min, 440V, 3-Phase squirrel-cage induction motor as an asynchronous…
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Q: A 3 phase 50Hz 6 pole induction motor develops a shaft power output of 20HP at 3% slip. Calculate…
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Q: A 5hp, 220V, 24.08A, 60 Hz, single-phase induction motor with power factor 0.8 lagging. What is the…
A: After capacitor insertion the motor draws only active power from the supply and total reactive…
Q: The name plate of single phase induction motor has following data output 373W,230V, frequency 50Hz.…
A: Given values are - OutputPo=373WVoltageVt=230VInput currentI=2.9APower factorcosϕ=0.71
Q: 1. The rotor of a 220-V., 60 Hz, 4-pole induction motor has a power input of 80 kW is observed that…
A: Copper loss: It is a loss in the form of the heat in the winding. This is undesirable for the…
Q: A generator of 380 Vrms and 60Hz feeds a parallel association between a 2kW heater and 30kVA…
A: The solution is given below
Q: A 400V, 3-phase, wye-connected wound rotor synchronous motor operates at unity pf while developing…
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Q: Q1 (a) A 3 phase induction motor operating at rated power can be represented by a balanced delta…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: A three-phase 500-hp, 60-Hz , 4.16kv Y-connected induction motor has a full-load efficiency of 88%,…
A: Active Power(P): The power which is deployed and absorbed by the electric circuit to do some useful…
Q: A 50 Hz, four-pole turbo alternator rated at 20 MVA, 13.2 kV has an inertia constant H = 4 kW…
A: In this answer we will calculate the kinetic energy of the alternator as shown below
Q: Determine the minimum diameter of the rotor required to generate 500kW of wind energy for a standard…
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Q: Q.2 [5] A 50 Hz, 4 pole turbo alternator rated at 20 MVA, 13.2 kV has inertia constant H=4 kW…
A: Given, Rating = 20 MVA H = 4 kW sec/KVA f = 50 Hz Pole = 4
Q: An induction motor draws 50 A from a 450 V, three-phase line at a lagging power factor of 0.75. Its…
A: Given, Stator input current(IL) = 50 A Stator input voltage (VL) = 450 V Input power factor = 0.75…
Q: A three-phase motor running on full-load at an efficiency of 90% is measured by two Wattmeter's…
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Q: If a 4-pole induction motor has a synchronous speed of 1500 r.p.m., then, supply frequency is
A: Given an induction motor with, Total number of poles, P = 4 Synchronous speed, Ns=1500 rpm Supply…
Q: The synchronous speed of the three-phase induction motor decreases with increasing the supply…
A: The given statement is False. The explanation is provided below.
Q: An 8-pole alternator runs at 750 rpm. and supplies power to a 6-pole induction motor which has at…
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Q: A 4-pole, 3-phase alternator drives at 1000 r.p.m. is supplying to an induction motor which has full…
A: Given: 3 Phase Alternator P = 4 Ns = 1000 RPM Full load Speed = 2880 RPM
Q: Cb) At starting, the winding of a 230V, 50 Hz split-phase induction motor has the following values:…
A: Since you have asked multiple questions in a single request, we will be answering only the first…
Q: 3.) A 460V, 25hp, 60HZ, 4 pole 3-phase induction motor has the following impedances in ohms per…
A: In the first subpart, there are three subparts. As per bartleby expert policy, only first three…
Q: The power input to the 3-phase induction motor is 60 kW. The stator losses total 1 kW. Find the…
A: Given, A 3-phase induction motor having Power input, Pi = 60 kW Stator losses = 1 kW Slip, s = 3 %
Q: In a 3-phase induction motor, express the mechanical power developed, in terms of air gap power Pg.
A: Given, To express the mechanical power developed in induction motor in terms of air gap power Pg.
Q: A 4-pole, 3-phase alternator drives at 1500 r.p.m. is supplying to an induction motor which has full…
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Q: B) 6 - pole alternator running at 1000 r.p.m. supplies an 8 – pole induction motor. What is the…
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Q: A generator installed in a power plant in Muscat is working at a speed of 1500 rpm. Determine the…
A: The solution can be achieved as follows.
Q: 1. Identify and write the differences between three phase Synchronous motors and Three phase…
A: Three phase synchronous motor: 1. Synchronous motors is not self starting. 2. DC supply is required…
Q: Q11. The phase splitter of a 1-phase induction motor is connected in series with its auxiliary…
A: The correct option is true.
Q: A 50 Hz, 4 pole turbo alternator rated at 20 MVA, 13.2 kV has inertia constant H=4 kW sec/kVA. The…
A: Given: A turbo alternator having f=50 HzP=4S=20 MVAH=4 kW sec/kVA
Q: A three-phase star connected six-pole induction motor has the following parameters. R, =0.294 2; R,…
A: Rotor resistance under full load =Rotor resistance under full load ×1Slip. using equivalent circuit…
Q: A 3-phase induction motor that is star-connected and has a supply line voltage E0 of 400V at 50Hz.…
A: You have asked multiple independent questions. We are authorized to answer one question at a time.…
Q: A 3-Phase synchronous motor has 12 poles and operates from 440 V, 50 Hz supply .Calculate its…
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Q: IV. Motor Operation 1. A three-phase induction machine has the following ratings: output power 40…
A: Given data, Output power P0=40 KW Frequency f = 50 Hz Rotor speed N = 740 rpm Efficiency η=0.90…
Q: A wind turbine system has a double fed induction generator of 6 pole 50 Hz has the following…
A: wind turbine is power generate device. it is convert kinetic energy into mechanical power. Wind…
Q: The output of 2200 Volts three phase induction motor used in a factory is 800 HP. If the average…
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Q: The average input to a manufacturing plant is 3000 kVA at a p.f. of 0.72 lagging. A synchronous…
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Q: A 25 hp, 460 V, 60 Hz, 4 poles, Y connected three phase induction motor has the following per-phase…
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Q: The power supplied to a three-phase induction motor is 50 kW and the stator losses are 2 kW. If the…
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Q: The coil span for alternator having fractional pitch winding of 9/14 is .................. 96.00 O…
A: In this section let us try to answer the two different questions using the concepts from electrical…
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- An induction motor is rated 5 HP, 75% power factor and 220 V. What approximate size of capacitor (VAR) is necessary to raise the power factor to about 95%?A four-pole induction motor drives a load at 2575 rpm. This is to be accomplished by using an electronic converter to convert a 400-V dc source into a set of three-phase ac voltages. ▾ Part A Find the frequency required for the ac voltages assuming that the slip is 4 percent. The load requires 2 hp. Express your answer to three significant figures and include the appropriate units. f= Submit ▾ Part B Value μÀ Submit I= Value Provide Feedback ^ Request Answer If the dc-to-ac converter has a power efficiency of 85 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the dc source. Express your answer to three significant figures and include the appropriate units. 4 Ò Request Answer Units ? Units ?Q9 / What are the function of brushes , pole and commutator in DC machine
- 8. A 3-phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical power developed by the motor is ............ (i) 20 W (iii) 500 W (ii) 980 W (iv) 200 WThe frequency of rotor current in an induction motor is slip times the frequency of stator current. slip times the frequency of supply, One by slip times the frequency of stator current. One by slip times the frequency of supplyQ/ The power input to the rotor of a three-phase induction motor is 50kW. The motor runs at 950rpm. The number of poles is 6. The frequency of supply is 50 Hz. The rotor resistance per phase is 0.3ohm. Determine the value of rotor current per phase.
- A four-pole induction motor drives a load at 2478 rpm. This is to be accomplished by using an electronic converter to convert a 400-V dc source into a set of three-phase ac voltages. Part A Find the frequency required for the ac voltages assuming that the slip is 4 percent. The load requires 2 hp. Express your answer to three significant figures and include the appropriate units. f= Submit Part B Value I = HA Request Answer Submit If the dc-to-ac converter has a power efficiency of 90 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the dc source. Express your answer to three significant figures and include the appropriate units. HÅ Value Units Request Answer ? Units ?Question 2. Considering this figure. The firing angle is 45°, the motor current is 10 A, and the supply voltage is 110 v. 0₁ 0₂ 90 (a) Draw the waveforms of v, Vo. io. isi, iDi, and i. (b) Determine the power taken by the dc motor. (c) Determine the supply volt-amperes and supply power factor. Assume that the converter is lossless. (d) Determine the rms value of the SCR current and the diode current.6- Which of the following supply is given to the rotor winding of 3-Phase Induction Motor: a) DC Supply b) AC Supply c) No Supply d) Pulsating Supply 7- 3-Phase Induction Motor will have Starting Torque and Starting Current a) High, High b) Low, Low. c) High, Low d) Low, High 8- Which of the following method is used for controlling the speed of an induction motor: a) Changing number of stator poles b) Supply voltage control c) Frequency control d) All the options are correct 9- Which of the following method cannot be used for starting of 3-Phase Squirrel Induction Motor: a) Star-Delta Starting b) Line resistor startling c) transformer Starter d) Rotor Resistance Starting 10- The rotor of a stepper motor has no: a) windings b) commutator c) brushes d) all of the above
- 7. The voltage generated across one inductor of a 30 alternator is 6 volts. There are 120 slots and 4 turns in every coil. The coil pitch is short by 2 slots, number of poles is 10 and frequency is 60 Hz. The armature winding correction factor of the alternator is nearest to a. 0.925 b. 0.987 c. 0.967 d. 0.957A 50 Hz, 3-phase induction motor is working at a full load speed of 1440 r.p.m. The full load slip will be a. 0.12 b. 0.06 c. 0.08 d. 0.043.8 An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50 Hz, the emf in the rotor will have a frequency of (a) 1.5 Hz (b) 48.5 Hz (c) 51.5 Hz (d) 75 Hz