Power Systems A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is 20 10 8 4 20 10 8 4 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of power system is/are All of these Flexible power has to be available. Reliable power has to be available Cost of electrical energy per KWh is to be minimum All of these Flexible power has to be available. Reliable power has to be available Cost of electrical energy per KWh is to be minimum ANSWER DOWNLOAD EXAMIANS APP
Power Systems In boiler water reactor (BWR) there is danger of radioactive contamination of steam. all of above. the feed water acts both coolant and a moderator. enriched uranium is used as fuel. there is danger of radioactive contamination of steam. all of above. the feed water acts both coolant and a moderator. enriched uranium is used as fuel. ANSWER DOWNLOAD EXAMIANS APP
Power Systems One Kg of natural uranium gives energy equivalent to about 1000 Kg of coal. 10500 Kg of coal. 100 Kg of coal. 5000 Kg of coal. 1000 Kg of coal. 10500 Kg of coal. 100 Kg of coal. 5000 Kg of coal. ANSWER DOWNLOAD EXAMIANS APP
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) (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) 2Zs/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
Power Systems The zero sequence current of a generator for line to ground fault is j3 pu. Then the current through the neutral during the fault is j9 pu j6 pu j3 pu j1 pu j9 pu j6 pu j3 pu j1 pu ANSWER DOWNLOAD EXAMIANS APP
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