GETCO Exam Paper (22-07-2015) Which of the following cable is extensively used for high tension and low tension work? VIR cable TRS cable PVC cable XLPE cable VIR cable TRS cable PVC cable XLPE cable ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In case of a balanced three phase sinusoidal AC supply, because of the phase difference rotating magnetic field is produced neutral wire is not required, if load is balanced neutral current is high if load is not balanced all are correct rotating magnetic field is produced neutral wire is not required, if load is balanced neutral current is high if load is not balanced all are correct ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 6\7 2\3 7\8 5\6 6\7 2\3 7\8 5\6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP fractional pitch = Cos( α/2)α is obtain from: (nα/2)=90˚ where n is harmonicα=25.7143˚fractional pitch=6/7
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) Hopkinson's test is the test to be carried out on induction motor with any DC motor induction motor with synchronous motor two identical induction motors two identical DC motors induction motor with any DC motor induction motor with synchronous motor two identical induction motors two identical DC motors 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) In the standard B-H curve X axis and Y axis intercepts respctively represents residual magnetism and coercive force Hysteresis loss and Flux Flux and MMF coercive force and residual magnetism residual magnetism and coercive force Hysteresis loss and Flux Flux and MMF coercive force and residual magnetism ANSWER DOWNLOAD EXAMIANS APP
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