GETCO Exam Paper (22-07-2015) For a given transformer volte/turn for primary and secondary winding is depends on load different same depends on transformer design depends on load different same depends on transformer design ANSWER EXPLANATION DOWNLOAD EXAMIANS APP emf = 4.44*f*φ*Temf/T = 4.44*f*φ
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is lagging zero unity leading lagging zero unity leading 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) In a given current transformer, If permissible current ratio error rated primary current is 5% the CT is suitable for measuring purpose both measuring and protection as power transformer protection purpose measuring purpose both measuring and protection as power transformer protection purpose ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The relay which is most sensitive to power swings (mal operation) is Impedance Relay Mho Relay Over current Relay Reactance Relay Impedance Relay Mho Relay Over current Relay Reactance Relay ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following is the most likely reason for large overshoot in a control system? high retarding torque presence of dead time delay High gain in a system high positive correcting torque high retarding torque presence of dead time delay High gain in a system high positive correcting torque ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Laplace transforms is used for converting diffential equation to algebraic equation for finding initial condition in a system finding transfer function of any systems converting non linear equation to linear equation converting diffential equation to algebraic equation for finding initial condition in a system finding transfer function of any systems converting non linear equation to linear equation ANSWER DOWNLOAD EXAMIANS APP
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