Electrical Machines A 4-pole DC generator runs at 1500 rpm. The frequency of current in the armature winding is: Zero Hz. 25 Hz. 50 Hz. 100 Hz. Zero Hz. 25 Hz. 50 Hz. 100 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Scott connections are used for three phase to two phase transformation. any of the above. single phase to three phase transformation. three phase to single phase transformation. three phase to two phase transformation. any of the above. single phase to three phase transformation. three phase to single phase transformation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which DC motor will have least percentage increase of input current, for the same percentage increase in the torque DC Series Motor DC Shunt Motor Compound Wound DC Motor Separately Excited DC Motor DC Series Motor DC Shunt Motor Compound Wound DC Motor Separately Excited DC Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Rotational loss Iron loss Copper loss All of these Rotational loss Iron loss Copper loss All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator frame in an induction motor is used to protect the whole machine. provide return path for the flux. hold armature stamping in position. ventilate the armature. protect the whole machine. provide return path for the flux. hold armature stamping in position. ventilate the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of dynamically induced emf is utilized in transformer. choke. thermocouple. generator. transformer. choke. thermocouple. generator. ANSWER DOWNLOAD EXAMIANS APP
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