Electrical Machines Slip rings of an induction motors are made of aluminium. carbon. phosphor bronze. stainless steel. aluminium. carbon. phosphor bronze. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be 474 V 240 V 6 V 234 V 474 V 240 V 6 V 234 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs increase. decrease. None of these either of these. increase. decrease. None of these either of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as T is independent of P. T2 ∝ P3. T ∝ P. T ∝ √P. T is independent of P. T2 ∝ P3. T ∝ P. T ∝ √P. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by Bl2v. Blv. Bl2v2. Blv2. Bl2v. Blv. Bl2v2. Blv2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 600 A. 2400 A. 1200 A. 3600 A. 600 A. 2400 A. 1200 A. 3600 A. ANSWER DOWNLOAD EXAMIANS APP
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