Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing open circuit and short circuit tests. open circuit and zero power factor tests. short circuit and slip tests. zero power factor and slip tests. open circuit and short circuit tests. open circuit and zero power factor tests. short circuit and slip tests. zero power factor and slip tests. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A generator may loose residual magnetism due to vibrations. over excitation. heating. any of these. vibrations. over excitation. heating. any of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load current in a transformer lags the applied voltage by about 75°. 0°. 90°. about 115°. about 75°. 0°. 90°. about 115°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is suitable for frequent starting and stoppings? Capacitor start motor All of these Capacitor start capacitor run motor Resistance split phase motor Capacitor start motor All of these Capacitor start capacitor run motor Resistance split phase motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At slip s = 1 torque developed in machine is maximum torque. none. starting torque. electromagnetic torque. maximum torque. none. starting torque. electromagnetic torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Alternator operates on the principle of mutual induction. self induction. electromagnetic induction. self or mutual induction. mutual induction. self induction. electromagnetic induction. self or mutual induction. ANSWER DOWNLOAD EXAMIANS APP
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