Electrical Machines The no load current in a transformer lags the applied voltage by 0°. about 115°. about 75°. 90°. 0°. about 115°. about 75°. 90°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotives which of the following motor are used ? DC compound motor. DC series motor. Synchronous motor. DC Shunt motor. DC compound motor. DC series motor. Synchronous motor. DC Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is true for an AC synchronous motor? It is a variable speed motor. It is a step angled motor. It is a high reluctance motor. It is a constant speed motor. It is a variable speed motor. It is a step angled motor. It is a high reluctance motor. It is a constant speed motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increase in speed of a DC motor back emf falls and line current increases. both back emf as well as line current fall. back emf increases but line current falls. both back emf as well as line current increase. back emf falls and line current increases. both back emf as well as line current fall. back emf increases but line current falls. both back emf as well as line current increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because induction motor will become synchronous motor. none of above. rotor torque will not be produced. air friction will prevent it. induction motor will become synchronous motor. none of above. rotor torque will not be produced. air friction will prevent it. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The polarity of a DC generator can be reversed by any of above. reversing field electric current as well as direction of rotation. reversing the field current. increasing field current. any of above. reversing field electric current as well as direction of rotation. reversing the field current. increasing field current. ANSWER DOWNLOAD EXAMIANS APP
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