Electrical Machines In a 3-phase induction motor, torque and supply voltage are related as T ∝ 1/V T∝ V² T ∝ V T ∝ 1/V² T ∝ 1/V T∝ V² T ∝ V T ∝ 1/V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept as wide as possible. depends on the material of stator and the rotor. air gap does not matter. as small as possible. as wide as possible. depends on the material of stator and the rotor. air gap does not matter. as small as possible. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? -1 < S < 1 -2 < S < 2 0 < S < 1 0 < S < 2 -1 < S < 1 -2 < S < 2 0 < S < 1 0 < S < 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformers operating in parallel will share the load depending upon their rating. percentage impedance. leakage reactance. efficiency. rating. percentage impedance. leakage reactance. efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to improve efficiency. improve power factor. reduce copper loss. improve starting torque. improve efficiency. improve power factor. reduce copper loss. improve starting torque. ANSWER DOWNLOAD EXAMIANS APP
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