Electrical Machines Normally for the design of transformer the ambient temperature is taken as 32°C. 45°C. 35°C. 27°C. 32°C. 45°C. 35°C. 27°C. 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 For a given torque, reducing diverter resistance of a DC series motor causes decrease in speed demanding less armature current. increase in speed but armature currnet remains the same. decrease in speed but armature current remains the same. increase in speed demanding more armature current. decrease in speed demanding less armature current. increase in speed but armature currnet remains the same. decrease in speed but armature current remains the same. increase in speed demanding more armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage 300 V. 200 V. 150 V. 223.V. 300 V. 200 V. 150 V. 223.V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of connection is made in between the inter-pole and the field winding? Parallel. Series. None of the options. Compound. Parallel. Series. None of the options. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a Dc generator the magnetic neutral axis coincide with geometrical neutral axis, when the generator runs on full load. the generator runs on designed speed. the generator runs on overload. there is no load on the generator. the generator runs on full load. the generator runs on designed speed. the generator runs on overload. there is no load on the generator. ANSWER DOWNLOAD EXAMIANS APP
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