GETCO Exam Paper (22-07-2015) Merz-Price protection is employed for protection of alternators motor circuit breaker transmission lines alternators motor circuit breaker transmission lines ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The magnitude of sum of two sinusoidal AC voltages is equal to the magnitude of each individual voltage, What must be the phase difference between voltages? 180 90 60 120 180 90 60 120 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Switching over voltages Harmonics Load power factor Corona Switching over voltages Harmonics Load power factor Corona ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 7 4.12 3 + 2(1.41) 5 7 4.12 3 + 2(1.41) 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP if voltage is given by,v(t) = V₀ + V₁ cos(3t) + V₂ cos(5t)+ …RMS value is given by,√( V₀² + (V₁/√2)² + (V₂/√2)² + …)
GETCO Exam Paper (22-07-2015) The rating of given on the name plate of a transformer indicates the: Apparent power which it can supply True power which it can supply True power whichh it draws from the supply mains Apparent power which it draws from the supply mains Apparent power which it can supply True power which it can supply True power whichh it draws from the supply mains Apparent power which it draws from the supply mains ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The rating of given on the name plate of a transformer indicates the:Apparent power which it can supply S=V( supplied voltage)*I (load current)active power = v* i*cosφreactive power = v* i*sinφ
GETCO Exam Paper (22-07-2015) What is the surge impedance loading of 400 kV line with surge impedance given as 160 Ω 400 MW 1000 kW 250 MW 1000 MW 400 MW 1000 kW 250 MW 1000 MW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP SIL = (kV)²/Z₀
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