Electrical Machines Maximum power developed depends on reactance both 1and 2 load angle voltage reactance both 1and 2 load angle voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by Ns = 120f /p × ( 1 - r). None of these Nr = 120f / p × (1-s). Ns = 120f / p × ( 1 - s ). Ns = 120f /p × ( 1 - r). None of these Nr = 120f / p × (1-s). Ns = 120f / p × ( 1 - s ). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be imperfect contact. any of above. severe sparking. rough commutator surface. imperfect contact. any of above. severe sparking. rough commutator surface. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because rotor torque will not be produced. induction motor will become synchronous motor. air friction will prevent it. none of above. rotor torque will not be produced. induction motor will become synchronous motor. air friction will prevent it. none of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be 2.7 mWb. 3.5 mWb. 1.4 mWb. 1.2 mWb. 2.7 mWb. 3.5 mWb. 1.4 mWb. 1.2 mWb. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Delta side leads by 30°. Delta side lags by -30°. Star side lags by -30°. Star side leads by 30°. Delta side leads by 30°. Delta side lags by -30°. Star side lags by -30°. Star side leads by 30°. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS