Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Remains same. Eight times. Four times. Doubled. Remains same. Eight times. Four times. Doubled. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the armature of DC motor is directly proportional to The voltage across the terminals. None of above. The speed of motor. The torque required. The voltage across the terminals. None of above. The speed of motor. The torque required. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Due to magnetic saturation, the flux per pole in a DC machine without brush shift decreases in both generators and the motors with load. decreases in generators and increases in motor with load. increases in both the generators and the motors with load. increases in generators but decreases in motor with load. decreases in both generators and the motors with load. decreases in generators and increases in motor with load. increases in both the generators and the motors with load. increases in generators but decreases in motor with load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If any two leads from slip rings are interchanged in a 3 - Φ induction motor, the motor will run in a direction opposite to previous one. continue running in the same direction as before. not run. get damaged. run in a direction opposite to previous one. continue running in the same direction as before. not run. get damaged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. The frequency is 50Hz. The slip of the motor is 4% 2% 5% 25% 4% 2% 5% 25% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW 33.33 MW and 66.67 MW respectively 50 MW and 50 MW respectively any of the above 66.67 MW and 33.33 MW respectively 33.33 MW and 66.67 MW respectively 50 MW and 50 MW respectively any of the above 66.67 MW and 33.33 MW respectively ANSWER DOWNLOAD EXAMIANS APP
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