Power Systems By using guard ring in a transmission line, its string efficiency increase None of these remains unaffected decrease increase None of these remains unaffected decrease ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of the cable is doubled, its capacitance C will be one-half. unchanged. one-fourth. doubled. one-half. unchanged. one-fourth. doubled. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is 0 Ω 800 Ω 400 Ω 200 Ω 0 Ω 800 Ω 400 Ω 200 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero? 31.28 kV 28.28 kV 30.28 kV 29.28 kV 31.28 kV 28.28 kV 30.28 kV 29.28 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are advantages of N-R method? both 1 and 2 Time taken for each iteration is less Number of iterations are less Applicable for large power system network both 1 and 2 Time taken for each iteration is less Number of iterations are less Applicable for large power system network ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading of a line is increased by which of the following compensation methods? shunt reactor shunt capacitor both 1 and 2 series capacitor shunt reactor shunt capacitor both 1 and 2 series capacitor ANSWER DOWNLOAD EXAMIANS APP
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