Polyphase Induction Motors MCQ - Electrician (Set-1) with Answers

Polyphase Induction Motors MCQ - Electrician (Set-1) with Answers

76) Which type of 3 phase motor starter is suitable for the 3 phase slip ring induction motor ?

Answer is:

Rotor-resistance starter

77) Which type of 3 phase induction motor starter is used to operate the slip ring induction motor ?

Answer is:

Rotor-resistance starter

78) What is full form of DOL ?

Answer is:

Direct on line

79) If the 3 phase squirrel cage induction motor does not start, when the start button is pressed, the cause is due to

Answer is:

open in no volt coil in starter

80) What is the possible cause, if the starter with single phasing preventer trips frequently during running of 3 phase induction motor ?

Answer is:

Abnormal fluctuation in line voltage