Polyphase Induction Motors QUESTIONS AND ANSWERS

Electrical Engineering : Polyphase Induction Motors QUESTIONS AND ANSWERS :: part4 : 6 to 10

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

6.Slip ring motor is preferred over squirrel cage induction motor where

high starting torque is required

load torque is heavy

heavy pull out torque is required

all of the above

7.In a squirrel cage motor the induced e.m.f. is

dependent on the shaft loading

dependent on the number of slots

slip times the stand still e.m.f. induced in the rotor

none of the above

8.In a star-delta starter of an induction motor

resistance is inserted in the stator

reduced voltage is applied to the stator

resistance is inserted in the rotor

applied voltage per1 stator phase is 57.7% of the line voltage

9.Less maintenance troubles are experienced in case of

slip ring induction motor

squirrel cage induction motor

both (a) and (b)

none of the above

10.A squirrel cage induction motor is not selected when

initial cost is the main consideration

maintenance cost is to be kept low

higher starting torque is the main consideration

all above considerations are involved

More Polyphase Induction Motors QUESTIONS AND ANSWERS available in next pages

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Electrical Engineering Questions And Answers :: Polyphase Induction Motors: part4

Polyphase Induction Motors QUESTIONS AND ANSWERS

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