GETCO Exam Paper (22-07-2015) Root Locus is locus of the _____ close loop poles to close loop zeros open loop zeros to close poles open loop poles to open loop zeros close loop poles close loop poles to close loop zeros open loop zeros to close poles open loop poles to open loop zeros close loop poles ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is lagging zero leading unity lagging zero leading unity 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) Fast excitation system of the generator will _____ Improve the power factor Improve the voltage control Improve the reactive power control Improve the dynamic stability Improve the power factor Improve the voltage control Improve the reactive power control Improve the dynamic stability ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Two watt meter method for 3 phase circuit is preferred over other methods because it can be used for balanced or unbalanced load it can be used for star or delta connected load PF of the load can also be estimated all are correct it can be used for balanced or unbalanced load it can be used for star or delta connected load PF of the load can also be estimated all are correct ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 7 5 4.12 3 + 2(1.41) 7 5 4.12 3 + 2(1.41) 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) Select the wrong statement from the following in relation to power flow analysis Approximation is used in FDLF method No of ittretion in N R method can not be more than 30 for any system Y Bus is required for power flow analysis jacobian is always required Approximation is used in FDLF method No of ittretion in N R method can not be more than 30 for any system Y Bus is required for power flow analysis jacobian is always required ANSWER DOWNLOAD EXAMIANS APP
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