GETCO Exam Paper (22-07-2015) Hopkinson's test is the test to be carried out on induction motor with any DC motor two identical induction motors two identical DC motors induction motor with synchronous motor induction motor with any DC motor two identical induction motors two identical DC motors induction motor with synchronous motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In hopkinson test known as regenerative testtwo identical machine coupledD.C shunt motorD.C shunt generatortemperature rise can be check under rated conditionlarge machine can be tested without drawing much power.
GETCO Exam Paper (22-07-2015) The steady state stability of the power systems is most effected by power factor of the load transmission line reactance stability of generator voltage at generator bus power factor of the load transmission line reactance stability of generator voltage at generator bus ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In G-S method of power flow problem, the number of iterations _____ depends on voltage control buses depends on tolerance remains fixed depends on no of buses depends on voltage control buses depends on tolerance remains fixed depends on no of buses ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In rotating electrical machines, the insulation temperature limit for class B type is 150˚C 105˚C 130˚C 180˚C 150˚C 105˚C 130˚C 180˚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 Y bus matrix is a sparse matrix because … no of lines are less bus incidence matrix is a sparse matrix lines are connected to less no. of buses Y primitive is a sparse matrix no of lines are less bus incidence matrix is a sparse matrix lines are connected to less no. of buses Y primitive is a sparse matrix 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 5 7 3 + 2(1.41) 4.12 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 + …)
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