|
1) The elements that are combustible in the fuel are a. Carbon and hydrogen. b. Carbon, hydrogen and ash. c. Carbon, hydrogen and sulphur. d. Carbon, nitrogen and ash.
|
||||
|
2) What is the percentage of ash content in Indian coal? a. 5 % b. 10 % c. 20 % d. 30 %
|
||||
|
3) Which of the following is/are an/ the essential element/s for the combustion of fuel? a. Oxygen b. Correct fuel air ratio. c. Proper ignition temperature. d. All of these.
|
||||
|
4) What is pulverised coal? a. Non smoking coal. b. Coal free from ash. c. Coal broken into fine particles. d. Coal which burns for long time.
|
||||
|
5) Why is pulverised coal used? a. Better burning. b. Increased calorific value of coal. c. Medium size units. d. Less radiation loss.
|
||||
|
6) What is the important factor in fuel selection? a. Cost of fuel. b. Calorific value c. Both (a) & (b) d. None of these
|
||||
|
7) Ash handling system is mainly divided into________________ systems. a. Mechanical handling b. Pneumatic c. Hydraulic d. All of these
|
||||
|
8) The thermal efficiency of a steam plant is defined as ________________. a. The ratio of heat equivalent of electrical output to the heat of combustion of coal. b. The ratio of heat of combustion of coal to the heat equivalent of electrical output. c. The ratio of heat equivalent of mechanical energy transmitted to the turbine shaft to the heat of combustion of coal. d. The ratio of heat of combustion of coal to the heat equivalent of mechanical energy transmitted to the turbine shaft.
|
||||
|
9) What is the overall efficiency of the thermal plant? a. The ratio of heat equivalent of electrical output to the heat of combustion of coal. b. The ratio of heat of combustion of coal to the heat equivalent of electrical output. c. The ratio of heat equivalent of mechanical energy transmitted to the turbine shaft to the heat of combustion of coal. d. The ratio of heat of combustion of coal to the heat equivalent of mechanical energy transmitted to the turbine shaft.
|
||||
|
10) A 100 MW steam station uses coal of calorific value of 5780 kcal/kg. The thermal efficiency is about 30% and the electrical efficiency is 93%. What would be the coal consumption per hour, when the station is delivering its full rated output? a. 48672 kg b. 53330 kg c. 71876 kg d. 31826 kg
|
||||
|
11) What percent of installed capacity of gas turbines contribute to the total installed capacity of the power plants in India? a. 5 % b. 8 % c. 11 % d. 15 %
|
||||
|
12) Which state in India among these doesn’t have a gas turbine plant? a. Jammu Kashmir b. Tripura c. Tamil Nadu d. Bihar
|
||||
|
13) On which cycle does the gas turbine work? a. Carnot b. Brayton c. Dual cycle d. Rankine cycle
|
||||
|
14) The gas turbines are mainly used in ________. a. Locomotives b. Aircrafts c. Automobiles d. Pumping stations
|
||||
|
15) Gas turbine plants are not used ___________. a. as peak load plants. b. as base load plants. c. as standby power plants. d. in combination with the steam power plants
|
||||
|
16) Combined cycle power plants are suitable for ___________. a. Base loads. b. Peak loads. c. Intermediate loads. d. Both base and peak loads.
|
||||
|
17) Name the turbine developed on the basis of aircraft engine technology. a. Brayton b. Aerodynamic c. Aero derivative d. Rankine
|
||||
|
18) Which among these is the main component of a gas turbine plant? a. Condenser b. Compressor c. Boiler d. None of these
|
||||
|
19) Which type of compressor is used in a gas turbine plant? a. Reciprocating compressor b. Screw compressor c. Multistage axial flow compressor d. None of these
|
||||
|
20) What part or % of power developed is utilised for driving the compressor? a. 65 % b. 70 % c. 55 % d. 80 %
|
||||
