Electrical Machines The armature reaction mmf in a DC machines has a form of sinusoidal. trapezoidal. rectangular. triangular. sinusoidal. trapezoidal. rectangular. triangular. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are high initial cost. high maintenance cost. all of above. poor overall efficiency. high initial cost. high maintenance cost. all of above. poor overall efficiency. 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 Separately Excited DC Motor Compound Wound DC Motor DC Series Motor DC Shunt Motor Separately Excited DC Motor Compound Wound DC Motor DC Series Motor DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be oscillating pulsating and unidirectional None of these steady and unidirectional oscillating pulsating and unidirectional None of these steady and unidirectional ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a seperately excited DC Motor if field current is increased, it will Increase speed Reduce armature heating. Reduce starting torque. Increase acceleration duration. Increase speed Reduce armature heating. Reduce starting torque. Increase acceleration duration. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of transformer core is made of silicon steel. wrought iron. cast steel. cast iron. silicon steel. wrought iron. cast steel. cast iron. ANSWER DOWNLOAD EXAMIANS APP
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