Electrical Machines A 20KVA auto transformer, turn ratio is 0.8. Find the power transferred conductively? 4KVA 0KVA 16KVA 20KVA 4KVA 0KVA 16KVA 20KVA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Operating speed. Starting torque. Full load current. Starting torque, operating speed, full load current. Operating speed. Starting torque. Full load current. Starting torque, operating speed, full load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lap winding is prefered for which type of machines? high current and high voltage low current and high voltage high current and low voltage low current and low voltage high current and high voltage low current and high voltage high current and low voltage low current and low voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are 1/3, 1/√3 1/√3, 1/3 1/3, 1/3 1/√3, 1/√3 1/3, 1/√3 1/√3, 1/3 1/3, 1/3 1/√3, 1/√3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is critical, the power factor of the alternator is leading power factor. None of these lagging power factor. unity power factor. leading power factor. None of these lagging power factor. unity power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brush-axis of a bipolar dc motor is rotated by 90°. The effect of this rotation on the back emf Eband the torque developed Tdwould be such that Eb is unchanged, but Td is zero both Eb and Td are zero both Eb and Td are unchanged Eb is zero, but Td is unchanged Eb is unchanged, but Td is zero both Eb and Td are zero both Eb and Td are unchanged Eb is zero, but Td is unchanged ANSWER DOWNLOAD EXAMIANS APP
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