Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss increase. decrease. remains constant. None of these increase. decrease. remains constant. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is 0%. 8.9%. 14%. 7%. 0%. 8.9%. 14%. 7%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Running Torque. Effiency. Starting torque. Speed regulation. Running Torque. Effiency. Starting torque. Speed regulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V/2, I and P/2 V, I and P V/2, I/2 and P/4 V, I/2 and P/2 V/2, I and P/2 V, I and P V/2, I/2 and P/4 V, I/2 and P/2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator has full-load voltage regulation of 10% at rated speed of 1000 rpm. If it is now driven at 1250 rpm, then its voltage regulation at full load would remain unchanged be less than 10% be more than 10% be 12.5% remain unchanged be less than 10% be more than 10% be 12.5% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/(1-S) 1-S S 1/S 1/(1-S) 1-S S 1/S ANSWER DOWNLOAD EXAMIANS APP
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