Economics of Power Generation Load factor for heavy industries may be taken as 25 to 40% 50 to 70% 10 to 20 % 70 to 80% 25 to 40% 50 to 70% 10 to 20 % 70 to 80% ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation In a 3 phase system, the line losses are W at a p. f. Of 1 . If the power factor becomes 0.8 lagging, the losses will becomes 1.57 W 2 W 1.25 W 0.8 W 1.57 W 2 W 1.25 W 0.8 W ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation An over excited synchronous motor on noload is known as generator induction motor synchronous condenser alternator generator induction motor synchronous condenser alternator ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation Which of the following devices may be used to provide protection against lightening over voltages ? Surge absorbers All of these Rod gaps Horn gaps Surge absorbers All of these Rod gaps Horn gaps ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation A load drwas active power(P), apparent power(S) and reactive power (Q) from the line. The power factor of the load is P/S P/Q Q/P S/P P/S P/Q Q/P S/P ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation Which of the following is the disadvantage due to low power factor ? High cost of equipment for a given load Poor voltage regulation All of these Increased transmission losses High cost of equipment for a given load Poor voltage regulation All of these Increased transmission losses ANSWER DOWNLOAD EXAMIANS APP