GETCO Exam Paper (22-07-2015) Shunt compensation in EHV line is resorted to Increase line impedance Improve the stability Improve voltage profile Reduce the fault level Increase line impedance Improve the stability Improve voltage profile Reduce the fault level ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a thermal power plant, heat from the flue gases is recovered in chimney condenser Economizer Electric precipitator chimney condenser Economizer Electric precipitator ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 3 + 2(1.41) 5 7 4.12 3 + 2(1.41) 5 7 4.12 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) 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) The fault occurring in transmission actually are mostly L-G L-L-G L-L L-L-L L-G L-L-G L-L L-L-L ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Stray loss is equal to _____ field copper loss & iron loss frictional loss & copper loss copper loss and iron loss mechanical loss & iron loss field copper loss & iron loss frictional loss & copper loss copper loss and iron loss mechanical 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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