Electrical Machines What is the highest possible speed of turbo alternators? 1500 rpm 1000 rpm 3000 rpm 4000 rpm 1500 rpm 1000 rpm 3000 rpm 4000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 2 KVA transformer has iron loss of 150 W and full load copper loss of 250 W. The maximum efficiency of the transformer would occur when the total loss is 250 W 500 W 300 W 400W 250 W 500 W 300 W 400W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Motor dc shunt motor with field weakening. dc shunt with armature resistance control. dc series motor. dc compound motor. dc shunt motor with field weakening. dc shunt with armature resistance control. dc series motor. dc compound motor. 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 Woud be equal to 2If1. Cannot be predicted due to insufficient data. Would be equal to If1. Would be equal to If1/2. Woud be equal to 2If1. Cannot be predicted due to insufficient data. Would be equal to If1. Would be equal to If1/2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum starting torque is obtained, rotor power is ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following are variable losses? shunt field copper loss hysteresis loss armature copper loss eddy current loss shunt field copper loss hysteresis loss armature copper loss eddy current loss ANSWER DOWNLOAD EXAMIANS APP
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