GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 5 4.12 3 + 2(1.41) 7 5 4.12 3 + 2(1.41) 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 is a reason to decouple AVR and LFC loops when there is a shortage of reactive power? angle of the voltage is not considered Change in voltage magnitude marginally affects real power deference of error is the main reason AVR loop response is slower than LFC loop angle of the voltage is not considered Change in voltage magnitude marginally affects real power deference of error is the main reason AVR loop response is slower than LFC loop ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Steady state stability of a power system is improved by using double circuit line instead of single circuit line decreasing generator inertia by fast switching reducing fault clearing time using double circuit line instead of single circuit line decreasing generator inertia by fast switching reducing fault clearing time ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Shunt capacitors in a substation consume active power delivers lagging VAR deliver active power consumes lagging VAR consume active power delivers lagging VAR deliver active power consumes lagging VAR ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The magnitude of sum of two sinusoidal AC voltages is equal to the magnitude of each individual voltage, What must be the phase difference between voltages? 120 90 180 60 120 90 180 60 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Fuel cell for power generation have drawback of _____ Low life span Noise, pollution and maintenance problems Synchronization problems Very high development costs Low life span Noise, pollution and maintenance problems Synchronization problems Very high development costs ANSWER DOWNLOAD EXAMIANS APP