Electrical Machines In a 3 - Φ IM in order to eliminate cogging the number of stator slots must be either (B) or (C). equal to number of rotor slots. unequal to number of rotor slots and skewed in shape. an integral multiple of number of rotor slots. either (B) or (C). equal to number of rotor slots. unequal to number of rotor slots and skewed in shape. an integral multiple of number of rotor slots. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced DC Shunt Motor The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. DC Shunt Motor The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-winding single-phase motor has starting torque equal to full-load torque. zero starting torque. low starting torque. high starting torque. starting torque equal to full-load torque. zero starting torque. low starting torque. high starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce reluctance of core. iron loss. volume of iron. volume of copper. reluctance of core. iron loss. volume of iron. volume of copper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be 59.2%. 48.0%. 88.8%. 57.1%. 59.2%. 48.0%. 88.8%. 57.1%. 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
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