GETCO Exam Paper (22-07-2015) Which of the following is not function of substation batteries? provide supply to the excitation system operating protective relay systems emergency lighting circuits operating automatic control circuits provide supply to the excitation system operating protective relay systems emergency lighting circuits operating automatic control circuits ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In rotating electrical machines, the insulation temperature limit for class B type is 105˚C 130˚C 180˚C 150˚C 105˚C 130˚C 180˚C 150˚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) Which of the following is the wrong statement in terms of slack bus? voltage and angle is specified at this bus it should be the largest generator bus in the system it should be located at the centre of the area it has finite reactive power generation capability voltage and angle is specified at this bus it should be the largest generator bus in the system it should be located at the centre of the area it has finite reactive power generation capability ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 5\6 2\3 6\7 7\8 5\6 2\3 6\7 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) In differential protection scheme, a stabilizing resistance connected to 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 block harmonics increase the current limit ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Who is the Energy and Petrochemicals minister of Gujarat? (As on 22/07/2015) Saurabh Patel Bhupendrasinh Chudasama Nitin Patel Anandiben Patel Saurabh Patel Bhupendrasinh Chudasama Nitin Patel Anandiben Patel ANSWER DOWNLOAD EXAMIANS APP
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