a) LG,LL,LLG,LLLG b) LLLG,LLG,LG,LL c) LLG,LLLG,LL,LG d) LL,LG,LLLG,LLG Ans: (a)
a) Reactors b) Resistors c) Capacitors d) Parallel combination of all these Ans: (a)
a) Compensation reactors b) Current limiting reactors c) Suppression or Peterson reactors d) All of these Ans: (d)
a) Higher safety against flashover b) Smaller size with large thermal capacity c) Limiting the fault voltage d) Both (a) and (b) above Ans: (a)
a) Limiting fault current b) Absorbing reactive power c) Absorbing high voltage surges d) Limiting fault current Ans: (b)
a) Core balance method b) Relay connected with neutral to ground c) Frame leakage method d) None of these Ans: (a)
a) Transformer b) Switch gear c) CT, PT d) Alternator Ans: (d)
a) Mho and ohm relays b) Horn gap and temperature relay c) Merz Price percentage differential relay d) Earth fault and positive sequence relay Ans: (b)
a) Main and transfer bus arrangement b) Single bus arrangement c) Sectionalized single bus arrangement d) Double bus, double breaker arrangement Ans: (d)
a) Subtransient reactance b) Transient reactance c) Synchronous reactance d) Short circuit reactance Ans: (c)