Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. What is the slip value? 0.2 0.04 0.02 0.4 0.2 0.04 0.02 0.4 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 53+j85 ohms 3.05+j5.08 ohms 3.5+j5.8 ohms 8+j13 ohms 53+j85 ohms 3.05+j5.08 ohms 3.5+j5.8 ohms 8+j13 ohms ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous speed of an induction motor will be increased by increasing number of poles. increasing of frequency. speed can not be increased. decreasing of frequency. increasing number of poles. increasing of frequency. speed can not be increased. decreasing of frequency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is low at light loads only both A and B low at heavy loads only low at rated load only low at light loads only both A and B low at heavy loads only low at rated load only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short-shunt cumulatively-compounded dc generator builds up a voltage of 220 V at no load at rated speed. If it is operated as a differentially compounded generator, other things remaining the same, it would build up 220 V somewhat less than 220 V 6 V more than 220 V 220 V somewhat less than 220 V 6 V more than 220 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stray losses in transformer occurs in transformer insulating oil. steel core. winding conductors and steel structures of transformer. paper insulation in transformers. transformer insulating oil. steel core. winding conductors and steel structures of transformer. paper insulation in transformers. ANSWER DOWNLOAD EXAMIANS APP
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