Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor decreases. increases. None of these remains same. decreases. increases. None of these remains same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, maximum power occurs at a load angle of less than 90° 90° Greater than 90° 0° less than 90° 90° Greater than 90° 0° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction depends on which of the following? power factor of load None of these magnitude of load current both 1 and 2 power factor of load None of these magnitude of load current both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increase in speed of DC motor Back emf falls and line current increase. Back emf increase but line current falls. Both back emf as well as line current increase. Both back emf as well as line current fall. Back emf falls and line current increase. Back emf increase but line current falls. Both back emf as well as line current increase. Both back emf as well as line current fall. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor in split phase induction motor is used to improve the power factor. start the motor. reduce the harmonics. improve the starting torque. improve the power factor. start the motor. reduce the harmonics. improve the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be rough commutator surface. severe sparking. any of above. imperfect contact. rough commutator surface. severe sparking. any of above. imperfect contact. ANSWER DOWNLOAD EXAMIANS APP
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