GETCO Exam Paper (22-07-2015) The power factor of the arc in circuit breaker is always lagging always unity always leading always zero always lagging always unity always leading always zero ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) 100% string efficiency means Equal potential across each disc Zero potential across each disc None uniform potential distribution across each disc One of the insulator discs shorted Equal potential across each disc Zero potential across each disc None uniform potential distribution across each disc One of the insulator discs shorted ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 5 3 + 2(1.41) 4.12 7 5 3 + 2(1.41) 4.12 7 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) Which of the following breaking method save energy? regenerative breaking resistor breaking dynamic breaking plugging regenerative breaking resistor breaking dynamic breaking plugging ANSWER EXPLANATION DOWNLOAD EXAMIANS APP three types of electric breaking:Regenerative breaking( leads to economic and energy consevation)pugging (more efficient method of breaking)rheostatic breaking
GETCO Exam Paper (22-07-2015) Shunt compensation in EHV line is resorted to Reduce the fault level Improve voltage profile Increase line impedance Improve the stability Reduce the fault level Improve voltage profile Increase line impedance Improve the stability ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) When the load is suddenly increased in the receiving end of the system, the phase shift will remains same Not affected increase decrease remains same Not affected increase decrease ANSWER DOWNLOAD EXAMIANS APP
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