Electrical Machines In salient pole synchronous machine, the reluctance power varies as cos2δ cosδ sinδ sin2δ cos2δ cosδ sinδ sin2δ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms connected directly to a 220 Volt supply. If the armature is stationary then the current flowing through the armature is 250 A. 340 A. 570 A. 440 A. 250 A. 340 A. 570 A. 440 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and flux of a DC motor are held constant and voltage applied across it armature is increased by 5%, the speed of the motor will Reduce by 5%. Increase by 5%. Depends on other factor. Remain unchanged. Reduce by 5%. Increase by 5%. Depends on other factor. Remain unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.2 lead 0.2 lag unity 0.9 lag 0.2 lead 0.2 lag unity 0.9 lag ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following alternators contain large number of poles? Turbo alternators. None of these Aame in both alternators. Hydro alternators. Turbo alternators. None of these Aame in both alternators. Hydro alternators. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following transformer insulating oil generally used in India? Paraffin based insulating oil. Aromatics based insulating oil. Olefin based insulating oil. Naphtha based insulating oil. Paraffin based insulating oil. Aromatics based insulating oil. Olefin based insulating oil. Naphtha based insulating oil. ANSWER DOWNLOAD EXAMIANS APP
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