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More Questions on This Topic :

Question 1. Fire tube boilers are limited to a maximum working pressure of
  1.    0.17 MN/m²
  2.    1.7 MN/m²
  3.    17 MN/m²
  4.    170 MN/m²
Answer: Option B

Question 2. The ratio of heat utilized to produce steam and the heat liberated in furnace is known as
  1.    Boiler effectiveness
  2.    Boiler evaporative capacity
  3.    Factor of evaporation
  4.    Boiler efficiency
Answer: Option D

Question 3. Fire tube boilers are limited to a maximum design working pressure of
  1.    1 kg/cm
  2.    6 kg/cm
  3.    17 kg/cm²
  4.    100 kg/cm²
Answer: Option C

Question 4. The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)
  1.    p₁. p₂
  2.    p₁/p₂
  3.    p₂/p₁
  4.    p₁ + p₂
Answer: Option C

Question 5. The crown of the fire box is made hemispherical in order to
  1.    Give maximum space
  2.    Give maximum strength
  3.    Withstand pressure inside boiler
  4.    Resist intense heat in fire box
Answer: Option D

Question 6. The high pressure boiler is one, which produces steam at a pressure more than
  1.    Atmospheric pressure
  2.    5 kg/cm²
  3.    10 kg/cm²
  4.    7580 kg/cm²
Answer: Option D