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MCQs

Total Questions : 1935 | Page 26 of 194 pages
Question 251. Fusible plug for boilers is made of fusible metal containing tin, lead, and
  1.    Bismuth
  2.    Copper
  3.    Aluminium
  4.    Nickel
 Discuss Question
Answer: Option A. -> Bismuth
Question 252. Steam engine operates on
  1.    Carnot cycle
  2.    Joule cycle
  3.    Stirling cycle
  4.    Brayton cycle
 Discuss Question
Answer: Option D. -> Brayton cycle
Question 253. The actual power supplied by the engine crankshaft is called
  1.    Indicated power
  2.    Brake power
  3.    Frictional power
  4.    None of these
 Discuss Question
Answer: Option B. -> Brake power
Question 254. The pressure of reheat steam after passing through reheater compared to inlet condition is
  1.    More
  2.    Less
  3.    Equal
  4.    May be more or less depending on capacity of reheater
 Discuss Question
Answer: Option B. -> Less
Question 255. The forced circulation of water does not take place in
  1.    LaMont boiler
  2.    Lancashire boiler
  3.    Velox boiler
  4.    Benson boiler
 Discuss Question
Answer: Option B. -> Lancashire boiler
Question 256. The height of chimney in a power plant is governed by
  1.    The draft to be created
  2.    Limitation of construction facilities
  3.    Control of pollution
  4.    Quantity of flue gases to be handled
 Discuss Question
Answer: Option C. -> Control of pollution
Question 257. On Millier chart, the constant pressure lines
  1.    Diverge from left to right
  2.    Diverge from right to left
  3.    Are equally spaced throughout
  4.    First rise up and then fall
 Discuss Question
Answer: Option A. -> Diverge from left to right
Question 258. The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.
  1.    Same
  2.    Less
  3.    More
  4.    None of these
 Discuss Question
Answer: Option C. -> More
Question 259. Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will
  1.    Boil
  2.    Flash i.e. get converted into steam
  3.    Remain as it was
  4.    Cool down
 Discuss Question
Answer: Option B. -> Flash i.e. get converted into steam
Question 260. Expansion ratio is the ratio of
  1.    Swept volume to the volume at cut-off
  2.    Clearance volume to the swept volume
  3.    Volume at cut-off to the swept volume
  4.    Swept volume to the clearance volume
 Discuss Question
Answer: Option A. -> Swept volume to the volume at cut-off

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