Steam Generators MCQ

Test your knowledge with important Steam Generators MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Steam Generators MCQs at Bissoy

• Which of the following boiler is best suited to meet the fluctuating demand of steam?
  ক

  Locomotive boiler

  খ

  Lancashire boiler

  গ

  Babcock and Wilcox boiler

  ঘ

  Cornish boiler
• The natural draught is produced by _________
  ক

  team jet

  খ

  chimney

  গ

  centrifugal fan

  ঘ

  none of the mentioned
• The object of producing draught in a boiler is _________
  ক

  to discharge the gases of combustion to the atmosphere through the chimney

  খ

  all of the mentioned

  গ

  to exhaust the gases of combustion from the combustion chamber

  ঘ

  to provide an adequate supply of air for the fuel combustion
• What is the length of shell of a Locomotive boiler?
  ক

  5m

  খ

  4m

  গ

  3m

  ঘ

  2m
• An air preheater is installed _____________
  ক

  between the economiser and chimney

  খ

  before the superheater

  গ

  before the economiser

  ঘ

  none of the mentioned
• What is the critical pressure of steam?
  ক

  221.2 bar

  খ

  220 bar

  গ

  120 bar

  ঘ

  300 bar
• How can we classify steam generators on the basis of application?
  ক

  utility steam generators

  খ

  industrial steam generator

  গ

  marine steam generator

  ঘ

  all of the mentioned
• Which of the following statements about Velox boiler is FALSE?
  ক

  It starts quickly

  খ

  It is compact

  গ

  Combustion rates are low

  ঘ

  Pressurized air is used
• Which of the following statements about super-critical is TRUE?
  ক

  It only needs preheater and superheater

  খ

  It only needs economizer and preheater

  গ

  It only needs economizer and superheater

  ঘ

  It only needs preheater
• Which of the following statements about Benson boiler is correct?
  ক

  It requires large surface area

  খ

  It is prone to explosions more than other boilers

  গ

  It takes a lot of time to start

  ঘ

  It is lighter than other boilers
• What is the maximum working pressure obtained by a commercial Benson boiler?
  ক

  300 atm

  খ

  400 atm

  গ

  500 atm

  ঘ

  600 atm
• Which of the following statements is FALSE about Benson boiler?
  ক

  Bubble formation in the heating tubes is prevented by slow heating

  খ

  It is a forced circulation boiler

  গ

  Oil is used as fuel

  ঘ

  Feed water is compressed to 235 bar
• The main drawback of LaMont boilers is _____
  ক

  limited capacity of evaporating drum

  খ

  bubble formation on the inner surface of heating tubes

  গ

  hindrance in the flow of hot gases

  ঘ

  radiant superheater decreases the efficiency
• In LaMont boilers, the circulation of water is maintained by a centrifugal pump which is driven by a steam turbine in which steam is fed from the boiler itself.
  ক

  True

  খ

  False
• Which of the following is FALSE about high pressure boilers?
  ক

  They are compact

  খ

  Heat of combustion utilized more effectively

  গ

  Heat is saved by evaporating water below critical pressure

  ঘ

  Pumps are used to circulate water
• Which of the following heating methods is NOT used in high pressure boilers?
  ক

  Evaporation of water above critical pressure of steam

  খ

  Decreasing gas velocity (improves heat transfer coefficient)

  গ

  Increasing water velocity inside tube (improves heat transfer coefficient)

  ঘ

  Mixing of water with superheated steam
• Which of the following is NOT a unique feature of high pressure boiler?
  ক

  Water circulation method

  খ

  Tubing type

  গ

  Firing method

  ঘ

  Improved method of heating
• Which of the following statements is FALSE about high pressure boilers?
  ক

  Modern high pressure boilers used for power generation have steam capacities even greater than 650 tonnes/hr

  খ

  Water is circulated through a pump in most of the modern high pressure boilers

  গ

  They are mostly water tube boilers

  ঘ

  One continuous tube is used for water circulation
• Shell boilers are preferred for high pressure and high output.
  ক

  True

  খ

  False
• What purpose do baffle plates serve in a Babcock and Wilcox boiler?
  ক

  They direct the flow of water

  খ

  They direct the flow of steam

  গ

  They direct the flow of hot gases

  ঘ

  They direct the flow of air to combustion chamber
• Stirling boiler is _____
  ক

  a fire tube boiler

  খ

  a bent-tube (water tube) boiler

  গ

  a horizontal straight tube (water tube) boiler

  ঘ

  a high pressure boiler
• Which of the following statements is FALSE for a cross drum Babcock and Wilcox boiler?
  ক

  The alignment of boiler drum is different in cross drum and longitudinal drum boilers

  খ

  Any number of connecting tubes can be used

  গ

  Steam of pressure 100 bar could be generated

  ঘ

  Steam capacity is 45000 kg/hr
• Babcock and Wilcox boiler is a forced circulation boiler.
  ক

  True

  খ

  False
• In Babcock and Wilcox boiler, just before entering the superheater the steam enters _____
  ক

  uptake header

  খ

  down take header

  গ

  main stop valve

  ঘ

  antipriming pipe
• What is the maximum steam capacity of a Babcock and Wilcox boiler?
  ক

  20000 kg/hr

  খ

  30000 kg/hr

  গ

  40000 kg/hr

  ঘ

  50000 kg/hr
• What is maximum working pressure of Babcock and Wilcox boiler?
  ক

  40 bar

  খ

  50 bar

  গ

  60 bar

  ঘ

  80 bar
• What is the correct range of size of superheater tubes in Babcock and Wilcox boiler?
  ক

  1.20 to 2.10 cm

  খ

  2.12 to 2.84 cm

  গ

  3.84 to 5.71 cm

  ঘ

  5.84 to 6.25 cm
• For a Babcock and Wilcox boiler, what is the correct range of size of the water tubes?
  ক

  1.22 to 1.44 cm

  খ

  4.98 to 6.02 cm

  গ

  7.62 to 10.16 cm

  ঘ

  12.25 to 15.54 cm
• What is the correct range of diameter of the drum for a Babcock and Wilcox boiler?
  ক

  0.61 – 1.02 m

  খ

  1.22 – 1.83 m

  গ

  2.87 – 3.52 m

  ঘ

  4.89 – 5.66 m
• Which of the following is a horizontal straight tube boiler?
  ক

  Lancashire boiler

  খ

  Babcock and Wilcox boiler

  গ

  Stirling boiler

  ঘ

  Locomotive boiler