Electrical Machines Which of the following motor is suitable for frequent starting and stoppings? All of these Capacitor start capacitor run motor Capacitor start motor Resistance split phase motor All of these Capacitor start capacitor run motor Capacitor start motor Resistance split phase motor 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% remain unchanged be less than 10% be 12.5% be more than 10% remain unchanged be less than 10% be 12.5% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a 3 - Φ wound induction motor is provided with single phase winding. heavy copper or aluminium bars placed in rotor slots. heavy short-circuited end rings. three phase winding. single phase winding. heavy copper or aluminium bars placed in rotor slots. heavy short-circuited end rings. three phase winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does happen if tripled harmonics given to induction motor? Nothing will happen. Will results in short circuit. Fail to start. Will results in open circuit. Nothing will happen. Will results in short circuit. Fail to start. Will results in open circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC shunt generator builds up to a voltage of 220 V at no load while running at its rated speed. If the speed of the generator is raised by 25% kepping the circuit conditions unaltered, then the Voltage to which the machine would build up will increase to a value greater than 1.25 times 220 V not change and remain at 220 V increase to 1.25 times 220 V increase to value lying between 220 V and 1.25 times 220 V increase to a value greater than 1.25 times 220 V not change and remain at 220 V increase to 1.25 times 220 V increase to value lying between 220 V and 1.25 times 220 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, the frequency of a voltage at the secondary is less than primary. any of the above. greater than the primary. equal to primary. less than primary. any of the above. greater than the primary. equal to primary. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS