Electrical Machines As compared to an induction motor, the air gap in a DC motor is more. less than 50%. between 50% and 90%. same. more. less than 50%. between 50% and 90%. same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be very small, say about 2 or 3 V. zero. about 100 V. 250 V. very small, say about 2 or 3 V. zero. about 100 V. 250 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the rotating losses of machine? All of the them Hysteresis losses Friction and windage losses Eddy current losses All of the them Hysteresis losses Friction and windage losses Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer maximum flux density is not constant, the eddy current loss varies as f² V² f V f² V² f V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 12 24 10 5 12 24 10 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Amperes law. Flemings right hand rule. Flemings left hand rule. Lenzs law. Amperes law. Flemings right hand rule. Flemings left hand rule. Lenzs law. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS