Electrical Machines A 4 pole, 3-phase induction motor is running at 4% slip at full load. If the speed of the motor is 720 rpm, the supply frequency is 60 Hz 40 HZ 50 Hz 25 Hz 60 Hz 40 HZ 50 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.2 lead 0.9 lag unity 0.2 lag 0.2 lead 0.9 lag unity 0.2 lag ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator without commutator is a induction motor DC motor AC generator DC generator induction motor DC motor AC generator DC generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltage regulation of a DC generator at full load being zero implies that the generator is cumulatively compounded. shunt connected. series connected. deferentially compounded. cumulatively compounded. shunt connected. series connected. deferentially compounded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V DC series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 ohms. The value of resistance which must be added to obtain rated torque at 1000 rpm is 6 ohms. 1.9 ohms. 5.7 ohms. 2.2 ohms. 6 ohms. 1.9 ohms. 5.7 ohms. 2.2 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principal of starting of 3 - Φ IM is similar to capacitor run IM. repulsion motor type starting. transformer with short-circuited secondary. synchronous motor. capacitor run IM. repulsion motor type starting. transformer with short-circuited secondary. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS