GETCO Exam Paper (22-07-2015) In case of a balanced three phase sinusoidal AC supply, because of the phase difference neutral current is high if load is not balanced rotating magnetic field is produced neutral wire is not required, if load is balanced all are correct neutral current is high if load is not balanced rotating magnetic field is produced neutral wire is not required, if load is balanced all are correct ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The value of holding ratio of relay is always less than 1 Infinite zero greater than 1 less than 1 Infinite zero greater than 1 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) An over-current relay of current rating 5 A and setting 150% is connected to a 200/5 A CT. Then the relay to pickup, the line current required is 100 150 300 200 100 150 300 200 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Corona Harmonics Load power factor Switching over voltages Corona Harmonics Load power factor Switching over voltages ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The power factor of the arc in circuit breaker is always unity always lagging always leading always zero always unity always lagging always leading always zero ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Stray loss is equal to _____ mechanical loss & iron loss frictional loss & copper loss copper loss and iron loss field copper loss & iron loss mechanical loss & iron loss frictional loss & copper loss copper loss and iron loss field copper loss & iron loss ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “mechanical loss & iron loss ”.Many times stray loss is also considered as total loss actually accured minus calculatable loss. This means loss that can be calculated is known as stray loss.
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