GETCO Exam Paper (22-07-2015) Two watt meter method for 3 phase circuit is preferred over other methods because PF of the load can also be estimated it can be used for star or delta connected load all are correct it can be used for balanced or unbalanced load PF of the load can also be estimated it can be used for star or delta connected load all are correct it can be used for balanced or unbalanced load ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 3 + 2(1.41) 4.12 7 5 3 + 2(1.41) 4.12 7 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP if voltage is given by,v(t) = V₀ + V₁ cos(3t) + V₂ cos(5t)+ …RMS value is given by,√( V₀² + (V₁/√2)² + (V₂/√2)² + …)
GETCO Exam Paper (22-07-2015) Two heaters rated at 500 W, 250 V each are conneted in series across a 250 V, 50 Hz mains. The total power drawn from the supply would be _____ watt. 500 250 1000 125 500 250 1000 125 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In rotating electrical machines, the insulation temperature limit for class B type is 105˚C 180˚C 130˚C 150˚C 105˚C 180˚C 130˚C 150˚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
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 3 + j6 9 + j10 1 + j2 3 - j6 3 + j6 9 + j10 1 + j2 3 - j6 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The value of holding ratio of relay is always zero less than 1 Infinite greater than 1 zero less than 1 Infinite greater than 1 ANSWER DOWNLOAD EXAMIANS APP
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