GETCO Exam Paper (22-07-2015) For selecting low voltage cable which of the following factors is not important? permissible voltage drop short circuit current rating current carrying capacity voltage grade permissible voltage drop short circuit current rating current carrying capacity voltage grade ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) HVDC transmission is preferred to EHV AC because VAR compensation is not required in it System stability can be improved Harmonic problem is avoided Its terminal equipment are inexpensive VAR compensation is not required in it System stability can be improved Harmonic problem is avoided Its terminal equipment are inexpensive ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Harmonics Corona Switching over voltages Load power factor Harmonics Corona Switching over voltages Load power factor 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) 4.12 7 5 3 + 2(1.41) 4.12 7 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) During the insulation co-ordination in the sub station, the lowest insulation strength is at CTs and PTs transformer bus bar circuit breaker CTs and PTs transformer bus bar circuit breaker ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Earth wire on EHV overhead transmission line is provided to protect the line against lightning surge switching surge corona effect excessive fault voltages lightning surge switching surge corona effect excessive fault voltages ANSWER DOWNLOAD EXAMIANS APP
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