Transformers Which motor is preferred for use in mines where explosive gases exist? Synchronous motor Induction motor Air motor Shunt motor Synchronous motor Induction motor Air motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
Transformers The short circuit test helps us to find Iron loss at no load Cu loss at no load None of the listed here Cu loss at any desire load Iron loss at no load Cu loss at no load None of the listed here Cu loss at any desire load ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 75% 65% 95 % 85% 75% 65% 95 % 85% ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are copper losses hysteresis and eddy current losses magnetic losses friction and windage losses copper losses hysteresis and eddy current losses magnetic losses friction and windage losses ANSWER DOWNLOAD EXAMIANS APP
Transformers When load on a transformer is increased, the eddy current _____ Is decreased Is increased None of the listed here Remains unchanged Is decreased Is increased None of the listed here Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Transformers The leakage flux in a transformer depends upon load current load current, voltage and frequency load current and voltage load current, voltage, frequency and power factor load current load current, voltage and frequency load current and voltage load current, voltage, frequency and power factor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS