GETCO Exam Paper (22-07-2015) The line current in a three phase unbalanced load are Ir= 4+j6, Ib= 2-j2 and Ic= -3+j2, then zero sequence component of current will be 1 + j2 3 + j6 9 + j10 3 - j6 1 + j2 3 + j6 9 + j10 3 - j6 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The relay which is most sensitive to power swings (mal operation) is Impedance Relay Reactance Relay Mho Relay Over current Relay Impedance Relay Reactance Relay Mho Relay Over current Relay ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a DC motor, back EMF value becomes maximum at _____ no load full load 1/2 load 3/4 load no load full load 1/2 load 3/4 load ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “1/2 load ”.
GETCO Exam Paper (22-07-2015) Which of the following is not function of substation batteries? emergency lighting circuits operating automatic control circuits provide supply to the excitation system operating protective relay systems emergency lighting circuits operating automatic control circuits provide supply to the excitation system operating protective relay systems ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Differential equation is required to be solved in _____ Finding efficiency of a transmission line economical operation of power systems Stability studies Load flow studies Finding efficiency of a transmission line economical operation of power systems Stability studies Load flow studies ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In rotating electrical machines, the insulation temperature limit for class B type is 180˚C 130˚C 150˚C 105˚C 180˚C 130˚C 150˚C 105˚C ANSWER EXPLANATION DOWNLOAD EXAMIANS APP insulation Class and temperature limit(in ˚C) is given below:Y - 90A- 105E- 120B-130F-155H-180C- above 180
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