Electrical Machines If the air gap of IM is increased, ____________ will increase. magnetizing current. air gap flux. power factor. speed. magnetizing current. air gap flux. power factor. speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called crawling. cogging. skewing. slip. crawling. cogging. skewing. slip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When two DC series motors are connected in parallel, the resultant speed is zero. normal speed. less than normal speed. more than normal speed. zero. normal speed. less than normal speed. more than normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The result of slip test on a 3-phase, 20 KVA, 400 V, 50 Hz connected salient pole alternator is given below- Phase value: Vmax = 100 V, Vmin = 96 V, Imax = 10 A and I min = 7 A. The direct and quadranature axis reactances are respectively 8.248 and 9.60 Ω. 14.28 and 9.60 Ω. 14.28 and 5.54 Ω. 8.248 and 5.54 Ω. 8.248 and 9.60 Ω. 14.28 and 9.60 Ω. 14.28 and 5.54 Ω. 8.248 and 5.54 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous reactance( Xs) is the reactance due to leakage flux reactance either due to armature reaction or leakage flux combined reactance due to armature reaction and leakage flux reactance due to armature reaction of the machine reactance due to leakage flux reactance either due to armature reaction or leakage flux combined reactance due to armature reaction and leakage flux reactance due to armature reaction of the machine ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ? 1 and 3 1, 2 and 3 1 and 2 2 alone 1 and 3 1, 2 and 3 1 and 2 2 alone ANSWER DOWNLOAD EXAMIANS APP
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