GETCO Exam Paper (22-07-2015) Hopkinson's test is the test to be carried out on two identical induction motors two identical DC motors induction motor with synchronous motor induction motor with any DC motor two identical induction motors two identical DC motors induction motor with synchronous motor 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) In synchronous motor, V-curve is a graph of Armature current Vs reactive power Armature current Vs active power Armature current Vs Field current Armature current Vs power factor Armature current Vs reactive power Armature current Vs active power Armature current Vs Field current Armature current Vs power factor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP v curve: armature current → field currentInverted V curve: power factor → field current
GETCO Exam Paper (22-07-2015) Fast excitation system of the generator will _____ Improve the power factor Improve the voltage control Improve the dynamic stability Improve the reactive power control Improve the power factor Improve the voltage control Improve the dynamic stability Improve the reactive power control ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Critical clearing time of a fault in a power system is related to Short circuit limit Transient stability limit Steady state limit Reactive power limit Short circuit limit Transient stability limit Steady state limit Reactive power limit ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) 100% string efficiency means None uniform potential distribution across each disc One of the insulator discs shorted Zero potential across each disc Equal potential across each disc None uniform potential distribution across each disc One of the insulator discs shorted Zero potential across each disc Equal potential across each disc ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following is not true about fuel cells? more efficient no recharging is needed need more than two electrode cost is higher than batteries more efficient no recharging is needed need more than two electrode cost is higher than batteries ANSWER DOWNLOAD EXAMIANS APP
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