Maharashtra State Board of Technical Education 2008 Diploma Electrical and Electronics Electrical Power Generation - Question Paper

Sample ques. Paper – I
Course Name :- Electrical Engineering Group
Course code :- EE/EP
Semester :- Third
Subject :- Electrical Power Generation
Duration :- three hours Marks: 80

Instructions :

1) All ques. are compulsory
2) Illustrate your answers with neat sketches wherever necessary.
3) Figures to the right indicate full marks.
4) presume suitable data, if necessary.
5) Preferably, write the answers in sequential order.

Q.1 Attempt any 8 of the subsequent [Marks:16]

a) List any 4 conventional sources of energy.

b) State the formula for overall efficiency of thermal power station.

c) State the function of control rods used in nuclear reactor.

d) State any 2 nuclear power stations in India, with their generating capacity.

e) State the 2 Hydro power stations with their capacities in Maharashtra.

f) State 2 advantages of solar energy.

g) List any 2 wind plants in Maharashtra

h) describe plant capacity factor.

i) What is load curve?

j) describe base load and peak load.

Q.2 Attempt any 3 of the subsequent [Marks:12]

a) provide examples of sources of power in Maharashtra? State the sources of power available in Maharashtra.

b) Draw the block diagram of Thermal power station and state the classification of boilers used in Thermal power stations.

c) With the neat sketch state the working of nuclear power station.

d) Which water turbine should be opted for a water head of 300 m? Draw its tagged sketch.

Q.3 Attempt any 3 of the subsequent [Marks:12]

a) Compare jet condenser with surface condenser for initial cost, maintenance cost, space needed and condensation.

b) Distinguish ranging from medium head and high head hydro-electric power stations on the basis of plant capacity, turbine used, specific speed, and capital cost.

c) Show the schematic arrangement of diesel power station layout and provide its principle of operation.

d) State 4 criteria's for selection of site for nuclear power station.

Q.4 Attempt any 4 of the subsequent [Marks:16]

a) Distinguish ranging from diesel power station and thermal power station on the basis of initial cost, running cost, cleanliness and space needed.

b) State 2 merits and demerits of gas turbine.

c) What is load curve? How avg. load is computed from load curve?

d) A power station has maximum demand of 480 MW, its avg. load is 370 MW, compute its load factor and total units consumed in a year.

e) Draw the draughts system for flue gases in thermal power plant and state functions of air preheated and chimney.

f) State 4 essential criteria's for selection of hydro power station.

Q.5 Attempt any 3 of the subsequent [Marks:12]

a) State 4 advantages of hydro power station over nuclear power station.

b) A 100 MW power station delivers 100 MW for 2 hrs, 70 MW for eight hrs, 50 MW for seven hrs and is shutdown for the rest of the day. It is also shutdown for 30 days every year. compute its annual load factor.

c) Draw a tagged sketch of Geo-Thermal power plant and write its working.

d) Distinguish ranging from nuclear power station with thermal power station for initial cost, starting period, cleanliness, and transportation of fuel.

Q.6 Attempt any 3 of the subsequent [Marks:12]

a) State function of condenser and coal handling plant, in thermal power plant.

b) Draw tagged sketch of fuel cell and write its working.

c) Demonstrate the use of solar power plant for street lighting with the help of back up battery.

d) Allot the subsequent power stations with reasons as base load plant and peak load plant. (1) Bhusawal thermal plant (2) Koyana hydro power plant (3) Radhanagari hydro power plant (4) Uran gas power plant.

Earning:   Approval pending.