Electrical Machines Which motors are preferred for refrigeration and air conditioning in smaller units? Induction motors. Universal motors. Reluctance motors. Stepper motors. Induction motors. Universal motors. Reluctance motors. Stepper motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf of a DC machine has trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. stepped distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. stepped distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________. 1.5 %. 30 %. 5 %. 2.67 %. 1.5 %. 30 %. 5 %. 2.67 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short circuit test on a transformer gives copper loss at half load. copper loss at over load. copper loss at full load. copper loss at any load. copper loss at half load. copper loss at over load. copper loss at full load. copper loss at any load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical load on it because otherwise it will produce sparking at brushes. develop excessive speed and damage itself. draw too much current. open fuse or circuit breaker. produce sparking at brushes. develop excessive speed and damage itself. draw too much current. open fuse or circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The induction motor shaft is made of aluminium. cast iron. stainless steel. mild steel. aluminium. cast iron. stainless steel. mild steel. ANSWER DOWNLOAD EXAMIANS APP
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