GETCO Exam Paper (22-07-2015) In a DC motor, back EMF value becomes maximum at _____ full load no load 3/4 load 1/2 load full load no load 3/4 load 1/2 load ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “1/2 load ”.
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 4.12 3 + 2(1.41) 5 7 4.12 3 + 2(1.41) 5 7 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) Fast excitation system of the generator will _____ Improve the voltage control Improve the dynamic stability Improve the reactive power control Improve the power factor Improve the voltage control Improve the dynamic stability Improve the reactive power control Improve the power factor ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In differential protection scheme, a stabilizing resistance connected to block harmonics increase the current limit increase the relay sensitivity reduce the effect of non identical CTs block harmonics increase the current limit increase the relay sensitivity reduce the effect of non identical CTs ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The Y bus matrix is a sparse matrix because … bus incidence matrix is a sparse matrix Y primitive is a sparse matrix lines are connected to less no. of buses no of lines are less bus incidence matrix is a sparse matrix Y primitive is a sparse matrix lines are connected to less no. of buses no of lines are less ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The value of holding ratio of relay is always greater than 1 less than 1 zero Infinite greater than 1 less than 1 zero Infinite ANSWER DOWNLOAD EXAMIANS APP
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