Boiler Mountings MCQ

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

• Feed check valve is used to empty the boiler when it is required to be cleaned.
  ক

  True

  খ

  False
• Where is feed check valve mounted?
  ক

  On top of the boiler shell

  খ

  At the bottom of the boiler shell

  গ

  Above the water level to be maintained

  ঘ

  Slightly below the water level to be maintained
• Which of the following statement about stop valve (or junction valve) is FALSE?
  ক

  It regulates the flow of steam

  খ

  Fitted at top of the boiler

  গ

  It connects boiler with the steam pipe

  ঘ

  The smaller sized valve is called junction valve
• Which of the following is NOT a boiler mounting?
  ক

  Steam stop valve

  খ

  Man hole

  গ

  Economizer

  ঘ

  Pressure gauge
• Which of the following statements about feed check valve is FALSE?
  ক

  It controls the flow of water

  খ

  It only allows flow of water in one direction

  গ

  It is fitted on top of the boiler shell

  ঘ

  It consists of check valve which automatically moves up and down under pressure of water
• The part of the feed check valve which moves up and down automatically under the pressure of water on its gun metal seat is called _____
  ক

  Check valve

  খ

  Fusible plug

  গ

  Flange

  ঘ

  Safety valve
• What is the function of a feed check valve?
  ক

  It regulates the flow of hot gases from the fire-box

  খ

  It controls the flow of air to the combustion chamber

  গ

  It controls the supply of steam outside the boiler

  ঘ

  It controls the supply of water to boiler
• In a fusible plug, the substance that melts when it comes in contact with the steam is called _____
  ক

  Melt

  খ

  Meting wax

  গ

  Fusible metal

  ঘ

  Fusible wax
• Which of the following statements about blow-off cock is FALSE?
  ক

  It is used to discharge the mud that has settled at the bottom

  খ

  It is used to empty the boiler for cleaning

  গ

  Scale and sediments are also removed when the blow-off cock is opened

  ঘ

  It is used to fill the boiler with water
• In fusible plug, the fusible metal is protected from fire by flange on the hollow gun metal plug.
  ক

  True

  খ

  False
• Which of the following statements about fusible plug is FALSE?
  ক

  It extinguishes fire when water level is low

  খ

  It protects the boiler from overheating

  গ

  It should have a very high melting point

  ঘ

  It needs to be renewed after a period of time
• What is the function of fusible plug?
  ক

  Protects the boiler from overheating

  খ

  Prevents mixing of water and steam

  গ

  Regulated the flow of steam outside boiler

  ঘ

  It is opened to increase the flow of air for combustion
• A Steam separator is a boiler mounting.
  ক

  True

  খ

  False
• In water level indicator, the glass tube that indicated the water level is called _____
  ক

  measurement tube

  খ

  guard glass tube

  গ

  gauge glass tube

  ঘ

  level tube
• Which of the following statements about high steam and low water safety valve is FALSE?
  ক

  It can be used on portable boilers

  খ

  Steam escapes out when water level falls below a certain level

  গ

  Steam is released when its pressure exceeds a certain pressure

  ঘ

  It is generally used in Lancashire and Cornish boiler
• Spring loaded safety valve is suitable for locomotive and marine engines.
  ক

  True

  খ

  False
• Which of the following statements about dead weight safety valve is FALSE?
  ক

  It is unsuitable for Locomotive boilers

  খ

  It is suitable for low pressure and low capacity boilers

  গ

  To lift the valve the inside pressure must overcome the valve weight and the dead weights

  ঘ

  It is suitable for high pressure boilers
• Which of the following statements about safety valves is FALSE?
  ক

  It is usually mounted on the top of the shell

  খ

  It releases the steam if the steam pressure exceeds the rated pressure

  গ

  Dead weight safety valve is a type of safety valve

  ঘ

  An attendant is required to operate the valve
• Which of the following is NOT a type of safety valve?
  ক

  Dead weight safety valve

  খ

  Lever safety valve

  গ

  Spring loaded safety valve

  ঘ

  High water and low steam safety valve
• The function of a safety valve is _____
  ক

  to release the excess steam when the steam pressure exceeds the rated pressure

  খ

  to extinguish fire when the temperature reaches impermissible value

  গ

  to release the excess water

  ঘ

  it cuts off the water supply when water level reaches its maximum limit
• Which of the following statements about Bourdon pressure gauge is FALSE?
  ক

  Double-tube Bourdon gauge is more rigid than the single tube

  খ

  Double-tube Bourdon gauge is more suitable for portable boilers

  গ

  It measures the gauge pressure

  ঘ

  The movement of the free end of the elliptical tube is proportional to the internal pressure of the boiler
• The syphon tube in the Bourdon pressure gauge (single tube) is filled with _____
  ক

  mercury

  খ

  turpentine oil

  গ

  mineral water

  ঘ

  condensed water
• Which of the following statements about compound pressure gauge is TRUE?
  ক

  It measure the hydrostatic pressure exerted by water at the bottom surface

  খ

  It can measure pressures above and below atmospheric pressure on the same dial

  গ

  It is installed at the bottom of the boiler shell

  ঘ

  It measures absolute pressure
• What is the purpose of pressure gauge?
  ক

  It measures the pressure exerted on the boiler shell from outside

  খ

  It measure the current atmospheric pressure

  গ

  It measures pressure exerted inside the boiler shell

  ঘ

  It measures hydrostatic pressure of water at the bottom of the boiler shell
• What is the purpose of guard glass in a glass-tube water level indicator?
  ক

  It protects the attendant, if water starts leaking

  খ

  It protects the water gauge, if steam pressure increases the design pressure

  গ

  It protects the attendant, if boiler cracks

  ঘ

  It protects the attendant, if the gauge glass breaks
• Water level indicator _____
  ক

  indicates the amount of steam in the boiler

  খ

  indicates the amount of water in the boiler

  গ

  indicates the amount of water converted to steam

  ঘ

  indicates the amount of steam left in the boiler
• Which of the following statements regarding boiler mountings is TRUE?
  ক

  They ensure safe operation of the boiler

  খ

  They are installed to increase efficiency of the boiler

  গ

  Economizer, superheater and feed pumps are boiler mountings

  ঘ

  Water level indicator is not a boiler mounting