Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1-S S 1/(1-S) 1/S 1-S S 1/(1-S) 1/S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of dynamically induced emf is utilized in generator. choke. transformer. thermocouple. generator. choke. transformer. thermocouple. 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 zero. about 100 V. 250 V. very small, say about 2 or 3 V. zero. about 100 V. 250 V. very small, say about 2 or 3 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 5 KVA transformer has a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms while that of secondary winding is 0.5+j0.8 ohms. The impedance of transformer when referred to primary will be 3.5+j5.8 ohms 3.05+j5.08 ohms 8+j13 ohms 53+j85 ohms 3.5+j5.8 ohms 3.05+j5.08 ohms 8+j13 ohms 53+j85 ohms ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following pairs is/are correct? All of these open slot----- leakage flux is less closed slot----- leakage flux is high semi closed slot-----leakage flux is moderate All of these open slot----- leakage flux is less closed slot----- leakage flux is high semi closed slot-----leakage flux is moderate ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have less breakdown torque. higher efficiency. more breakdown torque. leading power factor. less breakdown torque. higher efficiency. more breakdown torque. leading power factor. ANSWER DOWNLOAD EXAMIANS APP
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