a) True b) False Ans: (a)
a) Open circuit transmission line b) Short circuit transmission line c) Either (a) or (b) d) Long transmission line Ans: (a)
a) Open circuit transmission line b) Short circuit transmission line c) Long transmission line d) Short transmission line Ans: (b)
a) Oil circuit breaker b) Air blast circuit breakers c) Vacuum circuit breakers d) Circuit breaker with SF6 gas Ans: (d)
a) 50 ohms to 100 ohms b) 100 K ohms to 1000 K ohms c) 10 Mega ohms d) 50 Mega ohms to 100 Mega ohms e) 100 Mega ohms and above. Ans: (e)
a) Remain same b) Increase c) Decrease d) Tend to zero at receiving end Ans: (b)
a) Increase b) Decrease c) Will not change d) Tend to be very high at receiving end Ans: (a)
a) Only improve the p.f. of the line under large loads b) Keep same voltage at sending and receiving ends c) Help in transmitting larger power d) Decrease the inductance of the line e) (a), (b) and (c) only Ans: (e)
a) Active power b) Reactive power c) Frequency d) None of these Ans: (b)
a) Unity b) Infinity c) Zero d) 10 Ans: (c)
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.