Power Plant Engineering MCQ Questions - ObjectiveBooks

Power Plant Engineering MCQ Questions

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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