Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 40 kV 45 kV 36 kV 32 kV 40 kV 45 kV 36 kV 32 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which type of connection is employed for current transformers for the protection of star- delta connected 3-phase transformer? star-star delta-star star-delta delta-delta star-star delta-star star-delta delta-delta ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is 1000 Ω 250 Ω 25 Ω 500 Ω 1000 Ω 250 Ω 25 Ω 500 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems If, for a given alternator in economic operation mode, the incremental cost is given by (0.012 P + 8) Rs/MWh, dPL/dP = 0.2 and plant λ = 25, then power generation is 750 MW 1000 MW 1250 MW 1500 MW 750 MW 1000 MW 1250 MW 1500 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Bundled conductors in EHV transmission lines decrease capacitance decrease inducatance increase capacitance increase inductance decrease capacitance decrease inducatance increase capacitance increase inductance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the value of a729, where "a" is the operator 1 α α² 0 1 α α² 0 ANSWER DOWNLOAD EXAMIANS APP
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