Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 12 10 5 24 12 10 5 24 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction of an unsaturated DC machine is demagnetising. magnetising. none of above. crossmagnetising. demagnetising. magnetising. none of above. crossmagnetising. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hopkinson test is conducted under which of the following condition? full load half load no load any of the above full load half load no load any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/S 1/(1-S) 1-S S 1/S 1/(1-S) 1-S S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A series motor is efficiently suitable for high starting torque operation. none of these. low starting torque operation. constant speed operation. high starting torque operation. none of these. low starting torque operation. constant speed operation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The low voltage winding of a 400/230 V single phase 50 Hz transformer is to be connected to keep the magnetization current at the same level in both the cases the voltage at 25 Hz should be 230 V 65 V 460 V 115 V 230 V 65 V 460 V 115 V ANSWER DOWNLOAD EXAMIANS APP
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