Electrical Machines Motors for fans and pumps are selected in the rpm range 375 to 500. 720 to 920. 1440 to 2880. 500 to 720. 375 to 500. 720 to 920. 1440 to 2880. 500 to 720. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 3/4. 9/16. 16/9. 4/3. 3/4. 9/16. 16/9. 4/3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short-shunt cumulatively-compounded dc generator builds up a voltage of 220 V at no load at rated speed. If it is operated as a differentially compounded generator, other things remaining the same, it would build up 220 V more than 220 V somewhat less than 220 V 6 V 220 V more than 220 V somewhat less than 220 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Generators work on the principle of production of None of these dynamically induced emf. dynamically and statically induced emf. statically induced emf. None of these dynamically induced emf. dynamically and statically induced emf. statically induced emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting in a synchronous motor takes place when supply voltage fluctuates. when load varies. when power factor is unity. motor is under loaded. when supply voltage fluctuates. when load varies. when power factor is unity. motor is under loaded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machine armature windings are placed on rotor because of the necessity for commutation. electromechanical energy conversion. generation of voltage. development of torque. commutation. electromechanical energy conversion. generation of voltage. development of torque. ANSWER DOWNLOAD EXAMIANS APP
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