Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. What is the slip value? 0.02 0.04 0.2 0.4 0.02 0.04 0.2 0.4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer core is laminated to reduce hysteresis loss. both 1 and 2. copper loss. eddy current loss. hysteresis loss. both 1 and 2. copper loss. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following transformer insulating oil generally used in India? Paraffin based insulating oil. Olefin based insulating oil. Aromatics based insulating oil. Naphtha based insulating oil. Paraffin based insulating oil. Olefin based insulating oil. Aromatics based insulating oil. Naphtha based insulating oil. 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 3.05+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 53+j85 ohms ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When two DC series motors are connected in parallel, the resultant speed is more than normal speed. normal speed. less than normal speed. zero. more than normal speed. normal speed. less than normal speed. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field winding of a DC series motor is usually provided with thick wire to reduce the insulation of materials. in order to reduce eddy current to provide large flux. to provide large flux. as it carries large load current. to reduce the insulation of materials. in order to reduce eddy current to provide large flux. to provide large flux. as it carries large load current. ANSWER DOWNLOAD EXAMIANS APP
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