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MCQs

Total Questions : 1935 | Page 25 of 194 pages
Question 241. The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as
  1.    Equivalent evaporation
  2.    Factor of evaporation
  3.    Boiler efficiency
  4.    Power of a boiler
 Discuss Question
Answer: Option C. -> Boiler efficiency
Question 242. The ratio of the actual vacuum to the ideal vacuum in a condenser is called
  1.    Condenser efficiency
  2.    Vacuum efficiency
  3.    Nozzle efficiency
  4.    Boiler efficiency
 Discuss Question
Answer: Option B. -> Vacuum efficiency
Question 243. In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.
  1.    Equal to
  2.    Lower than
  3.    Higher than
  4.    None of these
 Discuss Question
Answer: Option C. -> Higher than
Question 244. Steam exhaust from high pressure turbine is reheated in
  1.    Boiler drums
  2.    Superheater tubes
  3.    Economizer
  4.    A separate coil located in convection path
 Discuss Question
Answer: Option D. -> A separate coil located in convection path
Question 245. In an impulse turbine, steam expands
  1.    Wholly in blades
  2.    Wholly in nozzle
  3.    Partly in the nozzle and partly in blades
  4.    None of these
 Discuss Question
Answer: Option B. -> Wholly in nozzle
Question 246. An ideal regenerative cycle is
  1.    Equal to Carnot cycle
  2.    Less than Carnot cycle
  3.    More than Carnot cycle
  4.    Could be anything
 Discuss Question
Answer: Option B. -> Less than Carnot cycle
Question 247. Which of the following is steam dial?
  1.    Non-coking bituminous coal
  2.    Brown coal
  3.    Pulverized coal
  4.    Coking bituminous coal
 Discuss Question
Answer: Option A. -> Non-coking bituminous coal
Question 248. Heating wet steam at constant temperature is heating it at constant
  1.    Volume
  2.    Pressure
  3.    Entropy
  4.    Enthalpy
 Discuss Question
Answer: Option B. -> Pressure
Question 249. A safety valve in a locomotive starts leaking. The leaking medium will be
  1.    Water
  2.    Dry steam
  3.    Wet steam
  4.    Super heated steam
 Discuss Question
Answer: Option D. -> Super heated steam
Question 250. Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
  1.    A steam turbine develops higher speeds
  2.    The efficiency of steam turbine is higher
  3.    The steam consumption is less
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these

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