Transformers The noise resulting from vibrations of laminations set by magnetic forces, is termed as Zoom Hum Magnetostriction Boo Zoom Hum Magnetostriction Boo ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine magnetising current magnetising current and loss core loss copper loss efficiency magnetising current magnetising current and loss core loss copper loss efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers In Ns is the synchronous speed and s the slip, then actual running speed of an induction motor will be (Ns-l)s s.N. Ns (l-s)Ns (Ns-l)s s.N. Ns (l-s)Ns ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 80% 50% 95% 65% 80% 50% 95% 65% ANSWER DOWNLOAD EXAMIANS APP
Transformers In case of 3-phase induction motors, plugging means locking of rotor due to harmonics starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping pulling the motor directly on line without a starter locking of rotor due to harmonics starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping pulling the motor directly on line without a starter ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum efficiency of a distribution transformer is at full load at no load at 80% full load at 50% full load at full load at no load at 80% full load at 50% full load ANSWER DOWNLOAD EXAMIANS APP
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