Electrical Machines What is the phase difference between two windings of A.C servomotor ? 90°. 30°. 120°. 60°. 90°. 30°. 120°. 60°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dissolve gas analysis of transformer oil is carried out to determine condition of bushings. condition of transformer. condition of bushing stud. condition of transformer oil. condition of bushings. condition of transformer. condition of bushing stud. condition of transformer oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 50Hz 2.5Hz 1 Hz 2HZ 50Hz 2.5Hz 1 Hz 2HZ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of ohmic losses. hysteresis losses. eddy current losses. mechanical losses. ohmic losses. hysteresis losses. eddy current losses. mechanical losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is suitable for frequent starting and stoppings? Capacitor start capacitor run motor All of these Capacitor start motor Resistance split phase motor Capacitor start capacitor run motor All of these Capacitor start motor Resistance split phase motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses? 2KW 0.5Kw 3KW 1.5KW 2KW 0.5Kw 3KW 1.5KW ANSWER DOWNLOAD EXAMIANS APP
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