Electrical Machines Maximum power will be developed when back emf is equal to supply voltage. double the supply voltage. half of the supply voltage. All of these equal to supply voltage. double the supply voltage. half of the supply voltage. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake reversing drive non reversing drive both 1 and 2 None of these reversing drive non reversing drive both 1 and 2 None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC Series motor, speed lower than the rated speed can be obtained by Connecting an additional resistance in stator circuit. Any of the above. Connecting an additional resistance in the armature circuit. Connecting an additional resistance in the field circuit. Connecting an additional resistance in stator circuit. Any of the above. Connecting an additional resistance in the armature circuit. Connecting an additional resistance in the field circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The induction motor shaft is made of stainless steel. aluminium. mild steel. cast iron. stainless steel. aluminium. mild steel. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A load of 900 lbs is to be raised with a lift car weighting 855 lbs at a speed of 110 feet per minute, the over balance being 40 % and percentage efficiency 45 %. Find the horse power of the motor without counterweight 170. 180. 160. 150. 170. 180. 160. 150. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be 0.62. 1.24. 0.25. 0.72. 0.62. 1.24. 0.25. 0.72. ANSWER DOWNLOAD EXAMIANS APP
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