Electrical Machines An unexcited single phase synchronous motor is reluctance motor. universal motor. repulsion motor. AC series motor. reluctance motor. universal motor. repulsion motor. AC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3.33% -3% -3.33% +3% +3.33% -3% -3.33% +3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following generators negative voltage regulation can occur? shunt generator series generators over compound generator both B and C shunt generator series generators over compound generator both B and C ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for differential compound motors. series motors. separately excited motors. shunt motors. differential compound motors. series motors. separately excited motors. shunt motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the necessity of copper brushes in a dc motors? To absorb the mechanical shocks produced during running condition. To convert alternating supply current to direct current. To increase the flux cutting by the rotor. None of these. To absorb the mechanical shocks produced during running condition. To convert alternating supply current to direct current. To increase the flux cutting by the rotor. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? armature current(Ia) flux(φ) both A and B None of these armature current(Ia) flux(φ) both A and B None of these ANSWER DOWNLOAD EXAMIANS APP
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