Power Systems What will be the thermal efficiency of a 240 V, 1000 W electric kettle if it brings 2 liters of water at 15° C to boiling point 15 Minutes 80.25 %. 74.56 %. 78.96 %. 79.33 %. 80.25 %. 74.56 %. 78.96 %. 79.33 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The Y bus matrix of 100 bus interconnected system is 90% sparse. Hence the number of transmission lines in the system must be 900 500 250 450 900 500 250 450 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 50 kA. 45 kA. 35 kA. 55 kA. 50 kA. 45 kA. 35 kA. 55 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speed ( NS ) of turbine is given by none of these. N√( P ) / H2/3. N√( P ) / H1.25. P√( N ) / H3/2. none of these. N√( P ) / H2/3. N√( P ) / H1.25. P√( N ) / H3/2. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The load duration curve for a system is 8 hours 30 MW, 16 hours 25 MW and 24 hours 20 MW. The load factor will be 0.83. 0.44. 1.3. 0.25. 0.83. 0.44. 1.3. 0.25. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Proximity effect is more in case of power cables over head lines same in both cases None of these power cables over head lines same in both cases None of these ANSWER DOWNLOAD EXAMIANS APP
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