Electrical Machines Commutator in DC generator is used for reduce losses convert AC armature current in to DC increase efficiency collecting of current reduce losses convert AC armature current in to DC increase efficiency collecting of current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increases in field excitation of a DC generator, its generated emf remains constant. decreases. increases upto a limit and then remains almost constant. increases. remains constant. decreases. increases upto a limit and then remains almost constant. increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss? 1800 Watt. 980 Watt. 1960 Watt. 1920 Watt. 1800 Watt. 980 Watt. 1960 Watt. 1920 Watt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the flux of DC motor approaches zero, its speed will remain unchanged. aprroach infinity. approach zero. between zero and infinity. remain unchanged. aprroach infinity. approach zero. between zero and infinity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a 3 - Φ induction motor is clockwise when it is supplied with 3 - Φ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be B - C - A or C - A - B. B - C - A. A - C - B. C - A - B. B - C - A or C - A - B. B - C - A. A - C - B. C - A - B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under trailing pole tips in case of generator will None of these increase decrease either increase or decrease None of these increase decrease either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
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