GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on stator resistance rotor resistance and reactance stator reactance load current stator resistance rotor resistance and reactance stator reactance load current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) In rotating electrical machines, the insulation temperature limit for class B type is 150˚C 130˚C 105˚C 180˚C 150˚C 130˚C 105˚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) In sub stations for making and breaking of load current isolators are used circuit breakers are used relays are used load interrupter switches are used isolators are used circuit breakers are used relays are used load interrupter switches are used ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a DC motor, back EMF value becomes maximum at _____ no load 3/4 load full load 1/2 load no load 3/4 load full load 1/2 load ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “1/2 load ”.
GETCO Exam Paper (22-07-2015) The area under the load duration curve represents Maximum demand of the power station energy generated in the period considered average load of the system base load of the system Maximum demand of the power station energy generated in the period considered average load of the system base load of the system ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) HVDC transmission is preferred to EHV AC because System stability can be improved VAR compensation is not required in it Its terminal equipment are inexpensive Harmonic problem is avoided System stability can be improved VAR compensation is not required in it Its terminal equipment are inexpensive Harmonic problem is avoided ANSWER DOWNLOAD EXAMIANS APP
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