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MCQs

Total Questions : 70 | Page 2 of 7 pages
Question 11. Reheat factor in steam turbines depends on
  1.    exit pressure only
  2.    stage efficiency only
  3.    initial pressures and temperature only
  4.    all of the above
 Discuss Question
Answer: Option C. -> initial pressures and temperature only
Question 12. Incase of reaction steam turbine
  1.    there is enthalpy drop both in fixed and moving blades
  2.    there is enthalpy drop only in fixed blades
  3.    there is enthalpy drop only in moving blades
  4.    none of the above
 Discuss Question
Answer: Option A. -> there is enthalpy drop both in fixed and moving blades
Question 13. Primary air is that air which is used to
  1.    reduce the flame length
  2.    increase the flame length
  3.    transport and dry the coal
  4.    provide air around burners for getting optimum combustion
 Discuss Question
Answer: Option C. -> transport and dry the coal
Question 14. India's first nuclear power plant was installed at
  1.    Tarapore
  2.    kota
  3.    Kalpakkam
  4.    none of the above
 Discuss Question
Answer: Option A. -> Tarapore
Question 15. Steam turbines commonly used in steam power station are
  1.    condensing type
  2.    non-condensing type
  3.    both (A) and (B)
  4.    none of the above
 Discuss Question
Answer: Option A. -> condensing type
Question 16. Belt conveyer can be used to transport coal at inclinations upto
  1.    30°
  2.    60°
  3.    80°
  4.    90°
 Discuss Question
Answer: Option A. -> 30°
Question 17. A steam power station requires space
  1.    equal to diesel power station
  2.    more than diesel power station
  3.    less than diesel power station
  4.    none of the above
 Discuss Question
Answer: Option B. -> more than diesel power station
Question 18. Artificial draught is produced by
  1.    induced fan
  2.    forced fan
  3.    induced and forced fan
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Question 19. In a shell and tube surface condenser
  1.    steam and cooling water mix to give the condensate
  2.    cooling water passes through the tubes and steam surrounds them
  3.    steam passes through the cooling tubes and cooling water surrounds them
  4.    all of the above varying with situation
 Discuss Question
Answer: Option B. -> cooling water passes through the tubes and steam surrounds them
Question 20. Economisers improve boiler efficiency by
  1.    1 to 5%
  2.    4 to 10%
  3.    10 to 12%
  4.    8 to 12%
 Discuss Question
Answer: Option B. -> 4 to 10%

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