Three Phase Induction Motors Slip rings are usually made of Carbon Phospor bronze Aluminium Copper Carbon Phospor bronze Aluminium Copper ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The advantage of wound rotor motor is that _______ External resistance can be inserted in the rotor circuit It requires less maintenance None of the listed here It is inexpensive External resistance can be inserted in the rotor circuit It requires less maintenance None of the listed here It is inexpensive ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In medium sized induction motor, the slip is generally around 0.4 % 0.04 % 14% 4 % 0.4 % 0.04 % 14% 4 % ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 60 to 90% 80 to 90% 95 to 98 % 99% 60 to 90% 80 to 90% 95 to 98 % 99% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Friction and windage loss of a 3 phase induction motor are None of the listed here Remains the same at all loads Minimum at no load Maximum at no load None of the listed here Remains the same at all loads Minimum at no load Maximum at no load ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______ 40% None of the listed here 65% 90% 40% None of the listed here 65% 90% ANSWER DOWNLOAD EXAMIANS APP
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