Electrical Machines A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is 50Hz. 100Hz. 150Hz. 200Hz. 50Hz. 100Hz. 150Hz. 200Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotive which of the following motor are used ? Separately compound motor. Synchronous motor. Shunt motor. DC series motor. Separately compound motor. Synchronous motor. Shunt motor. DC series motor. 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 In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Star side lags by -30°. Delta side lags by -30°. Delta side leads by 30°. Star side leads by 30°. Star side lags by -30°. Delta side lags by -30°. Delta side leads by 30°. Star side leads by 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of sinusoidal. triangular. rectangular. trapezoidal. sinusoidal. triangular. rectangular. trapezoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in the dc generator armature winding is AC AC and DC None of these DC AC AC and DC None of these DC ANSWER DOWNLOAD EXAMIANS APP
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