GETCO Exam Paper (22-07-2015) The power factor of the arc in circuit breaker is always zero always unity always lagging always leading always zero always unity always lagging always leading ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is unity lagging leading zero unity lagging leading zero 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) Who is the Energy and Petrochemicals minister of Gujarat? (As on 22/07/2015) Anandiben Patel Saurabh Patel Nitin Patel Bhupendrasinh Chudasama Anandiben Patel Saurabh Patel Nitin Patel Bhupendrasinh Chudasama ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on stator resistance stator reactance load current rotor resistance and reactance stator resistance stator reactance load current rotor resistance and reactance ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) In a given current transformer, If permissible current ratio error rated primary current is 5% the CT is suitable for measuring purpose as power transformer both measuring and protection protection purpose measuring purpose as power transformer both measuring and protection protection purpose ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) What is the surge impedance loading of 400 kV line with surge impedance given as 160 Ω 1000 kW 250 MW 1000 MW 400 MW 1000 kW 250 MW 1000 MW 400 MW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP SIL = (kV)²/Z₀
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