Electrical Machines Oil is provided in an oil filled transformer for insulating. cooling. lubrication. both cooling and insulation. insulating. cooling. lubrication. both cooling and insulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Diverters are used only in None of these shunt motors either of these series motors None of these shunt motors either of these series motors ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 2400 A. 3600 A. 600 A. 1200 A. 2400 A. 3600 A. 600 A. 1200 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:- 2, 3 and 4. 1, 3 and 4. 1, 2 and 3. 2 and 4. 2, 3 and 4. 1, 3 and 4. 1, 2 and 3. 2 and 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as relative speed. cogging. crawling. air gap. relative speed. cogging. crawling. air gap. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does happen if tripled harmonics given to induction motor? Nothing will happen. Fail to start. Will results in short circuit. Will results in open circuit. Nothing will happen. Fail to start. Will results in short circuit. Will results in open circuit. ANSWER DOWNLOAD EXAMIANS APP
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