Electrical Machines Which of the following load normally needs starting torque more than rated torque? Conveyers. Air compressors. Blowers. Centrifugal pumps. Conveyers. Air compressors. Blowers. Centrifugal pumps. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in the dc generator armature winding is None of these AC AC and DC DC None of these AC AC and DC DC ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a three phase induction motor has an impedance of 0.4 + j4 ohm per phase at standstill the maximum torque occurs at a slip of _____________. 15 %. 25 %. 50 %. 10 %. 15 %. 25 %. 50 %. 10 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately excited DC motor has an armature resistance of 0.5 Ohm. The supply voltage is 250V. Armature current is 20A and the speed of rotation is 1500 rpm. Find the torque developed? 16.55 Nm 15.6 Nm 15.28 Nm Zero 16.55 Nm 15.6 Nm 15.28 Nm Zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC motor operating at rated speed, the speed of the motor will Reduce. Oscillate around the normal speed. Increase. Remain unaltered. Reduce. Oscillate around the normal speed. Increase. Remain unaltered. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series field consists of--------number of turns and ---------- conductors respectively large and thin large and thick less and thick less and thin large and thin large and thick less and thick less and thin ANSWER DOWNLOAD EXAMIANS APP
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