Electrical Machines In DC machines shape of net flux density is? peaky in nature saddle shape flat tapped or trapezoidal sine wave peaky in nature saddle shape flat tapped or trapezoidal sine wave ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator if field winding attains the critical resistance machine will generate maximum voltage. the voltage generated will be zero. field winding will burn. machine will generate maximum power. machine will generate maximum voltage. the voltage generated will be zero. field winding will burn. machine will generate maximum power. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction depends on which of the following? 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 power factor of load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical load on it because otherwise it will develop excessive speed and damage itself. open fuse or circuit breaker. draw too much current. produce sparking at brushes. develop excessive speed and damage itself. open fuse or circuit breaker. draw too much current. produce sparking at brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the actual arrangement of series wound generator? Armature and field both are connected. Armature and field both are in series with the load. Armature and field both are parallel. Armature winding is in series with load. Armature and field both are connected. Armature and field both are in series with the load. Armature and field both are parallel. Armature winding is in series with load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 12 pole, 600 V, 50 Hz star connected IM has rotor resistance and stand still resistance of 0.03 Ω and 0.5 Ω respectively. The speed of maximum torque will be 450 rpm. 540 rpm. 240 rpm. 470 rpm. 450 rpm. 540 rpm. 240 rpm. 470 rpm. ANSWER DOWNLOAD EXAMIANS APP
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