GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 5\6 6\7 2\3 7\8 5\6 6\7 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 Ujjain Haridwar Nasik Alahabad Ujjain Haridwar Nasik Alahabad ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is lagging zero leading unity lagging zero leading unity ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Voltage regulation = ((no load voltage)-(full load voltage)/(no load voltage))VR at leading PF = ((I*R*cosφ)-(I*X*sinφ))/VVR at lagging PF = ((I*R*cosφ)+(I*X*sinφ))/V
GETCO Exam Paper (22-07-2015) Fast excitation system of the generator will _____ Improve the dynamic stability Improve the reactive power control Improve the voltage control Improve the power factor Improve the dynamic stability Improve the reactive power control Improve the voltage control Improve the power factor ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The value of holding ratio of relay is always less than 1 greater than 1 zero Infinite less than 1 greater than 1 zero Infinite ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In G-S method of power flow problem, the number of iterations _____ depends on tolerance depends on voltage control buses depends on no of buses remains fixed depends on tolerance depends on voltage control buses depends on no of buses remains fixed ANSWER DOWNLOAD EXAMIANS APP
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