Electrical Machines For a dc machine shunt resistance and armature resistance values are high and high high and low low and high low and low high and high high and low low and high low and low ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-φ alternator has negligible stator resistance. A short circuit test is conducted on this alternator. At a particular speed, a field current of If1 is required to drive the rated armature current. If the speed of the alternator is reduced to half, the field current required to maintain rated armature current Would be equal to If1. Would be equal to If1/2. Cannot be predicted due to insufficient data. Woud be equal to 2If1. Would be equal to If1. Would be equal to If1/2. Cannot be predicted due to insufficient data. Woud be equal to 2If1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? Compound. Series. Shunt. None of them. Compound. Series. Shunt. None of them. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When operating, two or more transformers in parallel, % impedance of these transformers should be same. such that actual impedance of all transformers would be same. proportionate to MVA rating of transformers. inversely proportional to MVA rating of transformers. same. such that actual impedance of all transformers would be same. proportionate to MVA rating of transformers. inversely proportional to MVA rating of transformers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors is/are widely used? slip ring induction motor squirrel cage induction motor None of these either of these slip ring induction motor squirrel cage induction motor None of these either of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause double frequency currents in the rotor. heating of rotor. vibrations. All of these double frequency currents in the rotor. heating of rotor. vibrations. All of these ANSWER DOWNLOAD EXAMIANS APP
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