Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as air gap. crawling. cogging. relative speed. air gap. crawling. cogging. relative speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is armature circuit resistance control All of these supply voltage control field current control armature circuit resistance control All of these supply voltage control field current control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the full load speed of 3-phase, 50Hz induction motor is 950 rpm, what is its half load speed nearly equals to? 1000 rpm 940 rpm 950 rpm 975 rpm 1000 rpm 940 rpm 950 rpm 975 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At stand still condition the value of slip is 1 infinite value 0 finite value 1 infinite value 0 finite value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Select the motor that should not be started on no load? Brushless DC motor. Shunt motor. Compound motor. Series motor. Brushless DC motor. Shunt motor. Compound motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the brushes remain in contact with conductors which lie in the inter polar gaps. there is no hard and fast rule for this. lie under south pole. lie under north pole. lie in the inter polar gaps. there is no hard and fast rule for this. lie under south pole. lie under north pole. ANSWER DOWNLOAD EXAMIANS APP
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