GETCO Exam Paper (30-11-2008) In a transformer it is difficult to measure the efficiency by output-input measurement methods because efficiency of transformer is usually high and hence extremely accurate measurements will be necessary losses are abnormally high output is out of phase with respect to input the output is sinusoidal and hence cannot be measured efficiency of transformer is usually high and hence extremely accurate measurements will be necessary losses are abnormally high output is out of phase with respect to input the output is sinusoidal and hence cannot be measured ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Which loss in a transformer varies significantly with load? Copper loss Eddy current loss Core loss Hysteresis loss Copper loss Eddy current loss Core loss Hysteresis loss ANSWER EXPLANATION DOWNLOAD EXAMIANS APP During O.C test obtained no load losses (core loss)During S.C. test obtained copper loss (load losses)during loaded condition of transformer copper loss more significant than core loss.
GETCO Exam Paper (30-11-2008) If the folt current is 2000 A, the relay setting is 50 percent & CT ratio is 400/5, the plug setting multiplier is 10 15 50 25 10 15 50 25 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Choose the word which is most nearly the SAME in meaningSPRING means issue forth overpower source means issue forth overpower source ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) On a long high voltage transmission line with heavy load, VAR compensation can be provided by using shunt inductive reactors series inductive reactors series capacitors shunt capacitors shunt inductive reactors series inductive reactors series capacitors shunt capacitors ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Steady - state stability limit of a power system means that the system is capable of maintaining the frequency at 50 Hz exactly synchronism between machines and on external tie lines All of these a constant power flow throughout the frequency at 50 Hz exactly synchronism between machines and on external tie lines All of these a constant power flow throughout ANSWER DOWNLOAD EXAMIANS APP
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