a) 100 kV b) 200 kV c) 500 kV d) 1000 kV Ans: (c)
a) Arc voltage b) Recovery voltage c) Surge voltage d) Break open voltage Ans: (b)
a) 5 to 10 kg/cm2 b) 10 to 15 kg/cm2 c) 15 to 20 kg/cm2 d) 20 to 30 kg/cm2 Ans: (d)
a) Maintain the arc b) Emit ionization electrons c) Extinguish the arc d) None of these Ans: (c)
a) Lengthening of arc b) Cooling and blast effect c) Deionizing the oil with forced air d) Both (a) and (b) above Ans: (d)
a) Alternators b) Transformers c) Switch yard d) Transmission lines Ans: (b)
a) Reactance relay b) Mho relay c) Reactance relay d) Both (b) and (c) Ans: (d)
a) Induction type b) Shaded pole type c) Thermocouple type d) Permanent magnet moving coil type Ans: (d)
a) Polarized type b) Balance beam type c) Hinged armature type d) Induction disc type Ans: (d)
a) Voltage polarities b) Flow of current c) Flow of power d) All of these Ans: (c)