Electrical Machines In an auto-transformer, power is transferred through None of these conduction process only. both A and B. induction process only. None of these conduction process only. both A and B. induction process only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of cage rotors offers the following advantages less noise. uniform torque. locking tendency is reduced. all of below. less noise. uniform torque. locking tendency is reduced. all of below. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Equalizer rings are used in which of the followings? wave winding lap winding both 1 and 2 None of these wave winding lap winding both 1 and 2 None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause heating of rotor. double frequency currents in the rotor. All of these vibrations. heating of rotor. double frequency currents in the rotor. All of these vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, torque and supply voltage are related as T ∝ 1/V² T ∝ V T∝ V² T ∝ 1/V T ∝ 1/V² T ∝ V T∝ V² T ∝ 1/V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The results of a slip test for determining direct axis (Xd) and quadrature axis (Xq) reactances of a star connected salient pole alternator are given below Phase values: Vmax = 108 V ; Vmin = 96 V Imax = 12 A ; Imin = 10 A Hence the two reactances will be Xd = 8Ω and Xq = 10.8Ω Xd = 9Ω and Xq = 9.6Ω Xd = 9.6Ω and Xq = 9Ω Xd = 10.8Ω and Xq = 8Ω Xd = 8Ω and Xq = 10.8Ω Xd = 9Ω and Xq = 9.6Ω Xd = 9.6Ω and Xq = 9Ω Xd = 10.8Ω and Xq = 8Ω ANSWER DOWNLOAD EXAMIANS APP
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