a) 20 secs. b) 5 secs. c) 10 secs. d) None of the above Ans: (b)
a) 130° b) 100° c) 25° d) None of the above Ans: (d)
a) Short line fault. b) Medium length line fault. c) Long line fault. d) None of these. Ans: (a)
a) Voltage restrained directional relay. b) Directional restrained over-current relay. c) Voltage restrained over-current relay. d) None of the above. Ans: (b)
a) Neutral of the system only. b) Ground only. c) For zero sequence neutral and for positive and negative the ground. d) None of the above. Ans: (d)
a) Z4>Z2>Z0 b) Z2>Z4>Z0 c) Z0>Z4>Z2 d) None of the above Ans: (a)
a) Sine and cosine comparators respectively b) Cosine and sine comparators respectively. c) Both are cosine comparators. d) Both are sing comparators. Ans: (b)
a) Chemical and ground rods only. b) Chemical and counterpoise only. c) Ground rod and counterpoise only. d) Chemical, ground rods and counterpoise. Ans: (c)
a) Type of circuit breaker. b) Inductance of the system only. c) Capacitance of the system only. d) Inductance and capacitance of the system Ans: (d)
a) 24.25 kV/cm. b) 20.2 kV/cm. c) 23 kV. d) 49.5 kV/cm. Ans: (d)
Multiple Choice Question (MCQ) of Electric Power page-10:91. An impulse turbine
Multiple Choice Question (MCQ) of Electric Power page-9:81. Spouting velocity is A) Velocity of jet under specified conditions B) Actual velocity of jet C) 50 % of ideal velocity of jet D) Ideal velocity of jet.
Multiple Choice Question (MCQ) of Electric Power page-8:71. In closed cooling system A) water does not flow B) hot water is recirculated after cooling C) air and water cooling is simultaneously used D) constant supply of fresh water for cooling is required.