The power input to a 3-phase induction motor is 60 kW. Total stator losses are 1000 W, the % efficiency of the motor if it is running at a slip of 4% is. (Assume negligible mechanical losses) 35 X

Q: 'hy does a slip occur in the three-phase induction motor? Expla

A: In a three phase induction motor, a three phase supply with a phase difference 120…

Q: 4.9 A 6-pole, 3-phase alternator running at 1000 rpm supplies to an 8-pole, 3-phase induction motor…

A: we need to find out speed at which the motor operates.

Q: If the no-load speed of a squirrel cage induction motor connected to a three-phase, 50 Hz is 12.…

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Q: The power input to a 415 V, 50 Hz, 6 pole 3-phase induction motor running at 975 rpm is 40 kW. The…

A: Given a three-phase induction motor having, Number of pole, P=6 Frequency, f=50 Hz Rotor speed,…

Q: The power input to a 3-phase induction motor is 60 kW. The stator loses a total of 1kW. find the…

A: The term "induction motor" refers to a motor that operates on the electromagnetic induction…

Q: In an induction motor, if the supply voltage is above normal then the machine will operate with High…

A: In this question we need to choose a correct option.

Q: At rest condition, the slip of induction motor is 1. Select one: O True O False

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Q: What is the freq. of a 10-pole alternator when running at 360 rpm? (b) At what speeds should a…

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Q: An 8 pole single phase induction motor is running at 690 rpm.what is the slip with respect to…

A: Given: A single phase induction motor with Number of poles, P=8 Motor speed, Nr=690 rpm

Q: What are the similarities and dissimilarities of a 3-phase induction motor and a transformer?

A: Similarities of a 3-phase induction motor and a transformer Both 3- phase Induction motor and…

Q: A permanent split single phase induction motor dose not have a squirrel cage rotor

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Q: induction motor is rated 5 HP, 75% power factor and 220 V. What approximate size of capacitor (VAR)…

A: We need to find out VAR size for increased power factor

Q: A four-pole induction motor drives a load at 2575 rpm. This is to be accomplished by using an…

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Q: What is the copper loss in the rotor circuit in kW? An induction motor is running at 40% of the…

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Q: . What are the various losses in an induction motor? On what factors do they depend

A: The fallowing are the various losses that occur in an induction motor:

Q: the efficiency of the 1 phase induction motor could be better increased by adding a permanently…

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Q: Armature reaction in an alternator primarily affects

A: Conceptual Background:- Armature Reaction:- Simply put, the armature reaction depicts how the…

Q: a. A 5-kW AC motor has a power factor of 65% lagging when it is connected to a 200-V 50-Hz mains.…

A: In this question,  We need to determine the current before connect the capacitor and after…

Q: A 3-phase induction motor running with 25% slip takes 100kw from the mains. If the stator copper…

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Q: What is the output speed of AC induction motor in our lab with six poles per phase and its slip is…

A: Given Data: s = 8% P = 6

Q: What are the following statements are true for a three-phase induction motor? I. Three-phase…

A: We need to select correct statement regarding three phase induction motor.

Q: A three phase induction motor operating at a slip of 5 % develops 20 kw rotor output power. What is…

A: The rotor copper loss in the above given operating conditions is calculated as shown below:

Q: A 12-pole induction motor has a frequency of 60 Hz. Its synchronous speed would be: (a) 600 rpm (b)…

A: Given: Total number of pole, P = 12 Induction motor frequency, f = 50 Hz

Q: If the supply voltage in a three-phase induction motor is reduced by 10%, what will be the…

A: Given, The supply voltage of a three phase induction motor is reduced by 10 %. Let, E1=EE2=0.9E

Q: 7- Iron loss in the rotor of a 3-phase induction motor (a) Very low frequency of emf induced in the…

A: In this question,  We need to choose the correct options Iron losses in the rotor of the 3 phase…

Q: The number of poles in the rotor circuit of a 3-phase induction motor is O Always two. Zero, because…

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Q: Example 1: The stator of a 30 , 2-poles machine has 18 slots and a double-layer winding. The coils…

A: Machines comprise 3 phases, 2 poles having 18 slots with double layer winding. so here  The phase is…

Q: What is the difference between wound rotor induction machines and squirrel cage machines

A: The wound rotor (also called as slip ring) and squirrel cage machines are the type of rotor in…

Q: A two-phase induction motor, 4 kW, quadrupole, 250 V and 50 Hz, has the following specifications: R…

A: Ans (a)  Zf = jXm2r2/2 s +jx2/2r2/2s + jXm + X2/2 ------- 1) putting value in equation -1) Zf =…

Q: what is the conclusion for the concepts of rotating amature and rotating field in an alternator?

A: There are two types of alternators are used one is rotating armature type and the other one is…

Q: A 110 V, 60 Hz, 6 - pole single phase induction motor 173 hp has the following equivalent circuit…

A: According to the question we have to find the value of input current, power factor and developed…

Q: 1. The operation of Commutator in DC Motor is O a) to convert dc to ac O b) to convert ac to dc O c)…

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Q: The torque developed by a dc series motor is 32 N-m when drawing 17 A. If the current is doubled,…

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Q: The plate of an induction motor include the following data: P=2364W, cos(phi)=0.95, 50HZ, 234rpm,…

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Q: At rest condition, the slip of induction motor is 1. Select one: True False

A: Solution : Slip of  induction motor is 2 to 3% when the motor is operated under the rated load.

Q: If a 4-pole induction motor has a synchro- nous speed of 1500 rp.m., then, supply fre- quency is (1)…

A: Given, An induction motor with, Number of poles, P=4 Synchronous speed, Ns=1500 rpm

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.