Practice Test: Question Set - 09
1. The pressure on the two sides of the impulse wheel of a steam turbine
- (A) Is same
- (B) Is different
- (C) Increases from one side to the other side
- (D) Decreases from one side to the other side
2. Mercury is a choice with steam in binary vapour cycle because it has
- (A) Higher critical temperature and pressure
- (B) Higher saturation temperature than other
fluids
- (C) Relatively low vaporisation pressure
- (D) All above
3. Solar thermal power generation can be achieved by
- (A) Using focusing collector or heliostats
- (B) Using flat plate collectors
- (C) Using a solar pond
- (D) Any of the above system
4. Incase of reaction steam turbine
- (A) There is enthalpy drop both in fixed and
moving blades
- (B) There is enthalpy drop only in fixed blades
- (C) There is enthalpy drop only in moving blades
- (D) None of the above
5. The efficiency of a modern boiler using coal and heat recovery equipment is about
- (A) 25 to 30 %
- (B) 40 to 50 %
- (C) 65 to 70 %
- (D) 85 to 90 %
6. In _________ system fuel from a central pulverizing unit is delivered to a bunker and then to the various burners
- (A) Unit
- (B) Central
- (C) Both (A) and (B)
- (D) None of the above
7. The energy radiated by sun on a bright sunny day is approximately
- (A) 700 W/m2
- (B) 800 W/m2
- (C) 1 kW/m2
- (D) 2 kW/m2
8. Rankine cycle efficiency of a good steam power plant may be in the range of
- (A) 15 to 20 percent
- (B) 35 to 45 percent
- (C) 70 to 80 percent
- (D) 90 to 95 percent
9. In Rankine cycle the work output from the turbine is given by
- (A) Change of internal energy between inlet and outlet
- (B) Change of enthalpy between inlet and outlet
- (C) Change of entropy between inlet and outlet
- (D) Change of temperature between inlet and outlet
10. Artificial draught is produced by
- (A) Induced fan
- (B) Forced fan
- (C) Induced and forced fan
- (D) All of the above
11. The draught in locomotive boilers is produced by
- (A) Forced fan
- (B) Chimney
- (C) Steam jet
- (D) Only motion of locomotive
12. Rateau steam turbine is
- (A) Reaction steam turbine
- (B) Velocity compounded impulse steam turbine
- (C) Pressure compounded impulse steam turbine
- (D) Pressure velocity compounded steam turbine
13. Evaporative type of condenser has
- (A) Steam in pipes surrounded by water
- (B) Water in pipes surrounded by steam
- (C) Either (A) or (B)
- (D) None of the above
14. The average ash content in Indian CO is about
- (A) 5 %
- (B) 10 %
- (C) 15 %
- (D) 20 %
15. Load carrying capacity of belt conveyor is about
- (A) 20 to 40 tonnes/hr
- (B) 50 to 100 tonnes/hr
- (C) 100 to 150 tonnes/hr
- (D) 150 to 200 tonnes/hr
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