Power Systems Which of the following represents the transmission or reflection coefficient of voltage Tv? (Zl = Surge impedance of load, Zs = Surge impedance of line) 2Zs/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zl/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zs/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zl/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 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 500 Ω 25 Ω 250 Ω 1000 Ω 500 Ω 25 Ω 250 Ω 1000 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The daily energy produced in thermal power station is 720 MWh at a load factor of 0.6. What is the maximum demand of the station? 72 MW 720 MW 50 MW 30 MW 72 MW 720 MW 50 MW 30 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is low specific speed turbine? None of these Francis Pelton Kaplan None of these Francis Pelton Kaplan ANSWER DOWNLOAD EXAMIANS APP
Power Systems Capacitance voltage transformer ( CVT ) is used to reduce losses in a transmission line. none of these. improve the power factor of the transmission. connect instruments on the LT side. reduce losses in a transmission line. none of these. improve the power factor of the transmission. connect instruments on the LT side. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where is the draft tube of a hydroelectric plant that is an airtight pipe located At the beginning of the penstock. Near the surge tank. In between the runner exhaust and the tail race. In between the penstock and runner. At the beginning of the penstock. Near the surge tank. In between the runner exhaust and the tail race. In between the penstock and runner. ANSWER DOWNLOAD EXAMIANS APP
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