Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to f V V2 f2 f V V2 f2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brush-axis of a bipolar dc motor is rotated by 90°. The effect of this rotation on the back emf Eband the torque developed Tdwould be such that both Eb and Td are unchanged both Eb and Td are zero Eb is unchanged, but Td is zero Eb is zero, but Td is unchanged both Eb and Td are unchanged both Eb and Td are zero Eb is unchanged, but Td is zero Eb is zero, but Td is unchanged ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will decrease. remain constant. any of the above. increase. decrease. remain constant. any of the above. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3% -3% +3.33% -3.33% +3% -3% +3.33% -3.33% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on which of the following? Rotor speed. Synchronous speed. Core loss component. Shaft torque. Rotor speed. Synchronous speed. Core loss component. Shaft torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Amperes law. Lenzs law. Flemings left hand rule. Flemings right hand rule. Amperes law. Lenzs law. Flemings left hand rule. Flemings right hand rule. ANSWER DOWNLOAD EXAMIANS APP
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