State the factors to be taken into consideration for the selection of Hydro Power Station.
[3 marks]What are the various types of turbines used for hydro power generation? Categorise them according to length.
[4 marks]Discuss about the Air preheater, Economiser and Superheater of thermal power station.
[7 marks]Discuss various disadvantages of low power factor.
[3 marks]Enlist different methods of power factor improvement and explain any one in detail.
[4 marks]A 3-phase 50-Hz 400V motor develops 100 HP (74.6 kW), the power factor being0.75 lagging and efficiency 93%. Abank of capacitor is connected in delta across the supply terminals and power factor raised to 0.95 lagging. Each of capacitance units is built of 4 similar 100V capacitors. Determine the capacitance of each capacitor.
[7 marks]Asingle-phase motor connected to a 240V, 50Hz, supply takes 20A at a power factor of 0.75 lagging. Acapacitor is shunted across the motor terminals to improve the power factor to 0.9. Determine the capacitance of the capacitor to be used.
[7 marks]Give the classification of various substations and discuss about the transformer substation.
[3 marks]Explain underground substation.
[4 marks]Draw and explain the typical layout of electrical power system from generation to distribution.
[7 marks]Enlist the criteria to be taken into consideration for the selection of site for nuclear power station.
[3 marks]What is the importance of control rods and moderator in nuclear reactor?
[4 marks]Compare the thermal, hydro and nuclear power plants
[7 marks]Derive equation for capacitance for the three phase line with symmetrical spacing.
[3 marks]Derive equation for inductance of single-phase two wire line.
[4 marks]Explain sending end circle diagram.
[7 marks]Discuss on the various conductor materials used for overhead lines. What are their relative advantages and disadvantages?
[3 marks]Explain transposition of transmission line.
[4 marks]Explain receiving end circle diagram.1
[7 marks]Enlist the basic equipment used in HVDC transmission.
[3 marks]Explain the operation of converters in HVDC transmission systems.
[4 marks]Write the principle of HVDC transmission. Explain its operation and control techniques with the help of block diagram.
[7 marks]Explain bundled conductors.
[3 marks]Explain skin effect and Ferranti effect.
[4 marks]Explain the solar plant through block diagram. Discuss importance of various blocks.
[7 marks]