A) discharge the capacitors B) pass neutralizing surges of opposite nature C) directly pass the fault surges to ground D) bring down the fault level within the capacity of switchgear. Ans : (D)
A) neutralize the surges by resistors B) divert the current to earth in the event of short-circuits C) modify the surge wave shapes D) none of the above. Ans : (B)
A) Electro-static induction B) Electromagnetic induction C) Gas pressure D) Eddy currents. Ans : (C)
A) zero B) vector sum of phase currents C) same as rms value of phase currents D) same as peak value of phase current. Ans : (A)
A) Underground cables B) Alternators C) Overhead lines D) Transformers. Ans : (C)
A) generator protection B) motor starters C) transformer protection D) none of the above. Ans : (B)
A) 36 kV B) 26 kV C) 16 kV D) 10 kV. Ans : (A)
A) 200 ohms B) 20 ohms C) 2.0 ohms D) 0.2 ohm. Ans : (D)
A) coefficient of expansion B) specific heat C) thermal conductivity D) thermal diffusivity. Ans : (A)
A) magnitude B) phase angle C) frequency D) any of the above. Ans : (D)
A) electromagnetic attraction B) electromagnetic induction C) thermal effect D) any of the above. Ans : (D)
A) Induction cup relay B) Buchholz relay C) Balanced beam relay D) Attracted armature type relay. Ans : (B)
A) generators B) transformers C) feeders D) all of the above. Ans : (D)