GETCO Exam Paper (22-07-2015) Hopkinson's test is the test to be carried out on 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 induction motor with any DC 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) Calculate torque developed by the 3-phase, 5 HP, 4 pole induction motor runs at 1500 rpm 23.5 N-m 0 N-m 10 N-m 22 N-m 23.5 N-m 0 N-m 10 N-m 22 N-m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP P = 2πTN/60 where N is speed in rpm
GETCO Exam Paper (22-07-2015) Earth wire on EHV overhead transmission line is provided to protect the line against switching surge lightning surge corona effect excessive fault voltages switching surge lightning surge corona effect excessive fault voltages 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 no of buses depends on tolerance remains fixed depends on voltage control buses depends on no of buses depends on tolerance remains fixed 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 5\6 2\3 7\8 6\7 5\6 2\3 7\8 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 recent (as on 22/07/2015) Mahakumbh is held at Alahabad Nasik Haridwar Ujjain Alahabad Nasik Haridwar Ujjain ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS