Electrical Machines A 230 V, 50 Hz, 4 pole single phase induction motor is rotating in the clockwise ( forward ) direction at a speed of 1425 rpm. If the rotor resistance at standstill is 7.8 Ω. Then the effective rotor resistance in the backward branch of the equivalent circuit will be 8 Ω. 2 Ω. 4 Ω. 10 Ω. 8 Ω. 2 Ω. 4 Ω. 10 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - φ induction motor can also be referred to as a shunt motor. transformer. asynchronous motor. repulsion motor. shunt motor. transformer. asynchronous motor. repulsion motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motors are preferred for refrigeration and air conditioning in smaller units? Induction motors. Stepper motors. Reluctance motors. Universal motors. Induction motors. Stepper motors. Reluctance motors. Universal motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce volume of copper. reluctance of core. iron loss. volume of iron. volume of copper. reluctance of core. iron loss. volume of iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is √3 3 1/3 1/√3 √3 3 1/3 1/√3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the actual flux distribution depends upon clearance between tips of the adjacent pole shoes. all of above. shape of the pole shoe. size of air gap. clearance between tips of the adjacent pole shoes. all of above. shape of the pole shoe. size of air gap. ANSWER DOWNLOAD EXAMIANS APP
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