Electrical Machines The direction of rotation of a DC motor can be determent by Flemings left hand rule. Amperes law. Lenzs law. Flemings right hand rule. Flemings left hand rule. Amperes law. Lenzs law. Flemings right hand rule. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be 3.5 mWb. 1.2 mWb. 1.4 mWb. 2.7 mWb. 3.5 mWb. 1.2 mWb. 1.4 mWb. 2.7 mWb. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is running with a divertor connected across its field winding. If the divertor resistance is reduced then the speed of the motor will remain unaltered. become execessively high. decrease. increase. remain unaltered. become execessively high. decrease. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High inrush of current during a starting of DC motor can efficiently be restricted to a safer value by increasing the _________________ resistance. armature circuit shunt field none of above both A and B armature circuit shunt field none of above both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The size of inter poles is small as compared to main poles. What is the reason? In order to get more flux. In order to get saturated. All of these In order to not to get saturated. In order to get more flux. In order to get saturated. All of these In order to not to get saturated. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has maximum speed? 4 pole. 8 pole. 6 pole. 2 pole. 4 pole. 8 pole. 6 pole. 2 pole. ANSWER DOWNLOAD EXAMIANS APP
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