Power Systems An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 400/5. The pick up value is 10 A 15 A 6.25 A 12.5 A 10 A 15 A 6.25 A 12.5 A ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following produces the radio interference in communication lines? electro static induction electro magnetic induction None of these both 1 and 2 electro static induction electro magnetic induction None of these both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the disadvantages of phase modifiers? All of these It requires more maintenance because of running equipment Initial cost of synchronous phase modifier is higher It consumes both active and reactive power All of these It requires more maintenance because of running equipment Initial cost of synchronous phase modifier is higher It consumes both active and reactive power ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays is/are unit protection relays? Buccholz relays both 1 and 2 over current relays Differential relays Buccholz relays both 1 and 2 over current relays Differential relays ANSWER DOWNLOAD EXAMIANS APP
Power Systems What type of back up protection is used for alternators? Buchholz relay. Mho relay. Impedance relay. IDMT relay. Buchholz relay. Mho relay. Impedance relay. IDMT relay. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Proximity effect is more in case of over head lines power cables None of these same in both cases over head lines power cables None of these same in both cases ANSWER DOWNLOAD EXAMIANS APP
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