Power Systems Which of the following statements is true? Corona loss increases with increase in conductor size and increase in supply frequency decrease in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and decrease in supply frequency increase in conductor size and increase in supply frequency decrease in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and decrease in supply frequency 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 500 Ω 25 Ω 1000 Ω 250 Ω 500 Ω 25 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Percentage of carbon is highest in lignite coal. bituminous coal. coal gas. anthracite coal. lignite coal. bituminous coal. coal gas. anthracite coal. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of electrical power transmission is/are nether 1 nor 2 Transmission system must be more efficient with minimum line losses both 1 and 2 Voltage regulation of the transmission line must be zero or minimum nether 1 nor 2 Transmission system must be more efficient with minimum line losses both 1 and 2 Voltage regulation of the transmission line must be zero or minimum ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulation of the modern EHV lines is designed based on R × I. the lighting voltage. the switch voltage. corona. R × I. the lighting voltage. the switch voltage. corona. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of high energy loss in boilers low steam turbine mechanical efficiency low alternator efficiency high energy loss in condenser high energy loss in boilers low steam turbine mechanical efficiency low alternator efficiency high energy loss in condenser ANSWER DOWNLOAD EXAMIANS APP
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