Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? MNA None of these either GNA or MNA GNA MNA None of these either GNA or MNA GNA 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 be more than 10% be 12.5% be less than 10% remain unchanged be more than 10% be 12.5% be less than 10% remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer maximum flux density is not constant, the eddy current loss varies as f² f V V² f² f V V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Considering a galvanometer is connected to the rotor of a 3 - Φ, 4 pole, 50 Hz IM and is making 130 oscillations in a minute, then calculate the rotor speed? 1435. 1450. 1500. 1440. 1435. 1450. 1500. 1440. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging in induction motor occurs when number of stator teeth - number of rotor teeth = odd number. number of stator teeth - number of rotor teeth = negative number. number of stator teeth - number of rotor teeth = even number. number of stator teeth - number of rotor teeth = 0. number of stator teeth - number of rotor teeth = odd number. number of stator teeth - number of rotor teeth = negative number. number of stator teeth - number of rotor teeth = even number. number of stator teeth - number of rotor teeth = 0. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Full load current. Operating speed. Starting torque. Starting torque, operating speed, full load current. Full load current. Operating speed. Starting torque. Starting torque, operating speed, full load current. ANSWER DOWNLOAD EXAMIANS APP
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