Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 2 point starter 4 point starter 3 point starter All of these 2 point starter 4 point starter 3 point starter All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A self-excited shunt generator fails to build up, because 1. the field circuit is open 2. The armature circuit is open 3. the residual magnetism is absent 4. The direction of rotation is wrong From these, the correct answer is 1, 2 and 3 3 only 1, 2, 3 and 4 1, 3 1, 2 and 3 3 only 1, 2, 3 and 4 1, 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has got maximum relieving property? Shunt. Differentical compound. Series. Cummulative compound. Shunt. Differentical compound. Series. Cummulative compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Speed of DC motor can be controlled by varying all of these. applied voltage. resistance of armature culture. its flux oer pole. all of these. applied voltage. resistance of armature culture. its flux oer pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotive which of the following motor are used ? DC series motor. Shunt motor. Synchronous motor. Separately compound motor. DC series motor. Shunt motor. Synchronous motor. Separately compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to reactance voltage. presence of commutator. high resistance of carbon brushes. armature reaction. reactance voltage. presence of commutator. high resistance of carbon brushes. armature reaction. ANSWER DOWNLOAD EXAMIANS APP
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