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MCQs

Total Questions : 1935 | Page 11 of 194 pages
Question 101. The rate of steam produced in Benson boiler is
  1.    100 tonnes/h
  2.    135 tonnes/h
  3.    175 tonnes/h
  4.    250 tonnes/h
 Discuss Question
Answer: Option B. -> 135 tonnes/h
Question 102. The effect of bleeding is that
  1.    It increases the thermodynamic efficiency of the turbine
  2.    Boiler is supplied with hot water
  3.    It decreases the power developed by the turbine
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 103. Which of the following is not a boiler mounting?
  1.    Blow off cock
  2.    Feed check valve
  3.    Economiser
  4.    Fusible plug
 Discuss Question
Answer: Option C. -> Economiser
Question 104. The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure.
  1.    Equal to
  2.    Less than
  3.    Higher than
  4.    None of these
 Discuss Question
Answer: Option B. -> Less than
Question 105. The heat balance sheet for the boiler shows the
  1.    Complete account of heat supplied by 1 kg of dry fuel and the heat consumed
  2.    Moisture present in the fuel
  3.    Steam formed by combustion of hydrogen per kg of fuel
  4.    All of the above
 Discuss Question
Answer: Option A. -> Complete account of heat supplied by 1 kg of dry fuel and the heat consumed
Question 106. Which of the following gases has the highest calorific value?
  1.    Producer gas
  2.    Coal gas
  3.    Water gas
  4.    Blast furnace gas
 Discuss Question
Answer: Option B. -> Coal gas
Question 107. Which of the following coals has the highest calorific value?
  1.    Anthracite coal
  2.    Bituminous coal
  3.    Lignite
  4.    Peat
 Discuss Question
Answer: Option A. -> Anthracite coal
Question 108. Which type of boiler can meet rapid changes of load?
  1.    Vertical fire tube type
  2.    Horizontal fire tube type
  3.    Horizontal water tube type
  4.    Forced circulation type
 Discuss Question
Answer: Option D. -> Forced circulation type
Question 109. A nozzle is said to be a divergent nozzle
  1.    When the cross-section of the nozzle increases continuously from entrance to exit
  2.    When the cross-section of the nozzle decreases continuously from entrance to exit
  3.    When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit
  4.    None of the above
 Discuss Question
Answer: Option A. -> When the cross-section of the nozzle increases continuously from entrance to exit
Question 110. Which of the following boiler is best suited to meet the fluctuating demand of steam?
  1.    Locomotive boiler
  2.    Lancashire boiler
  3.    Cornish boiler
  4.    Babcock and Wilcox boiler
 Discuss Question
Answer: Option A. -> Locomotive boiler

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