26. Is the amount of motor reactive power Q higher than the amount of motoractive power P when the three-phase induction motor operates without load?O NoO YesWhat does this indicate about three-phase induction motors operatingwithout load?

When a three-phase induction motor operates on no-load then the line current drawn by the motor is…

Answered: 26. Is the amount of motor reactive…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 12RQ: What type of split-phase motor does not generally contain a centrifugal switch?

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Similar questions

What type of split-phase motor does not generally contain a centrifugal switch?
IN Counter-Current Breaking o f a 3-Phase Induction Motor(Reversing the Operation o f a 3-Phase Induction Motor) How it was insured in the control circuit as to avoid the operation of both positiveand negative sequences simultaneously?
Q12/ Complete the blank If a 3-phase induction motor has synchronous speed of 1200 rpm and the frequency in stator is 60Hz, then the number of poles will be .....................................?
In a three phase induction motor, voltage between the slip rings at standstill is 50 V. At full load the slip is 0.04. The voltage between slip rings at full load is?
A three phase induction motor is wound for 8 poles and is supplied from 50Hz system. Calculate the synchronous speed and speed of the motor when slip is 6% What are the advantages of squirrel cage induction motor over motor? write any four advantages
3-phase induction motor is wound for 8-pole and is supplied from 50 Hz system calculate (1) the synchronous speed, (ii) the speed of the motor when slip is 8% and (iii) the rotor current frequency when the motor runs at 1200 r.p.m.
Assume a three phase induction motor is connected to a three phase system and the shaft is coupled with a steam turbine. Now explain the motor-generator transition technique with proper diagram.
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K-a. The phase angle difference between the currents in the start winding and run winding of a single-phase split-phase motor is typically 90 degrees. a) true b) false K-b. A centrifugal switch is used to disconnect the______ winding of a non-hermetically sealed single-phase split-phase motor at approximately 75% of rated speed. a) run b) start c) either "a" or "b" d) neither "a" nor "b" K-c Where an internal centrifugal switch cannot be used, an external_____ relay can be used to perform the same function in a single-phase split-phase motor. a) hot-wire b) current c) solid-state starting d) all of the above
Explain briefly the differences of induction motor & synchronous motor. 6 sentence
23. As load is increased from no load to full load on a 3-phase squirrel-cage induction motor, what happens to the ...D) stator current of the motor?a) increases b) decreases c) remains the same d) none of the aboveE) power factor of the motor?a)improves, b)get poorer, c)remains the same, d)none of aboveF) efficiency of the motor?a)increases b)decreases c) remains the same d) none
Q11-b) A three-phase induction motor is used to drive many types of loads for example water pump and compressor. Explain the followings: i. The construction and its operational principle;ii. Synchronous speed, rotor speed, slip and their relationships,iii. Starting methods for induction motor,iv. Disadvantages of induction motor.

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26. Is the amount of motor reactive power Q higher than the amount of motor active power P when the three-phase induction motor operates without load? O No O Yes What does this indicate about three-phase induction motors operating without load?