1. A shunt generator delivers 450 A at 230 V and the resistance of the shunt field and armature are 50 Ω and 0.03 Ω respectively. Calculate the generated e.m.f? …
1. A synchronous motor can operate at (A) Lagging power factor only (B) Leading power factor only (C) Unity power factor only (D) Lagging, leading and unity power factor only …
Part 1Part 2Part 3Part 4Part 5 1. A circuit breaker is (A) power factor correcting device (B) a device to neutralize the effect of transients (C) a waveform correcting …
46. The short coming of repulsion motor is (A) variation of speed with load (B) low power factor (C) tendency to spark at brushes (D) all of the above. Check …
16. A winding is having a number of slots is equal to the number of poles, then this winding is called (A) concentrated winding. (B) short pitch winding. (C) full pitch …
1. In an alternator, voltage drops occurs in (A) armature resistance only (B) armature resistance and leakage reactance (C) armature resistance, leakage reactance and armature reaction (D) armature resistance, leakage …
Part 1Part 2Part 3Part 4Part 5 1. A capacitor start single phase induction motor will usually have a power factor of (A) unity(B) 0.8 leading(C) 0.6 leading(D) 0.6 lagging. Check …
Part 1Part 2Part 3Part 4Part 5 16. Out of the following circuit breakers, which one has the lowest voltage range ? (A) Air-break circuit breaker (B) Tank type oil …
1. Overall efficiency of steam locomotive system is close to (A) 5 to 10%(B) 25 to 30%(C) 55 to 60%(D) 75 to 80%.Check AnswerA2. In a steam locomotive electric power …