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MCQs

Total Questions : 1935 | Page 29 of 194 pages
Question 281. The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)
  1.    Remains constant
  2.    Decreases
  3.    Increases
  4.    None of these
 Discuss Question
Answer: Option A. -> Remains constant
Question 282. A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called
  1.    Receiver type compound engine
  2.    Tandem type compound engine
  3.    Woolf type compound engine
  4.    None of these
 Discuss Question
Answer: Option B. -> Tandem type compound engine
Question 283. Pick up the wrong statement about critical condition of steam
  1.    Latent heat is zero
  2.    Liquid directly becomes steam
  3.    Specific volume of steam and liquid is same
  4.    This is the maximum pressure limit
 Discuss Question
Answer: Option D. -> This is the maximum pressure limit
Question 284. Parson's turbine is a
  1.    Simple impulse turbine
  2.    Simple reaction turbine
  3.    Impulse-reaction turbine
  4.    None of these
 Discuss Question
Answer: Option B. -> Simple reaction turbine
Question 285. When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.
  1.    Increases
  2.    Decreases
  3.    Remain same
  4.    None of these
 Discuss Question
Answer: Option B. -> Decreases
Question 286. Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value
  1.    (1- moisture content)
  2.    (1 + moisture content)
  3.    1 + moisture content
  4.    1 – moisture content
 Discuss Question
Answer: Option A. -> (1- moisture content)
Question 287. Locomotive boiler is a
  1.    Single tube, horizontal, internally fired and stationary boiler
  2.    Single tube, vertical, externally fired and stationary boiler
  3.    Multi-tubular, horizontal, internally fired and mobile boiler
  4.    Multi-tubular, horizontal, externally fired and stationary boiler
 Discuss Question
Answer: Option C. -> Multi-tubular, horizontal, internally fired and mobile boiler
Question 288. Cut-off governing of steam engines is a method of controlling the engine output by varying
  1.    Volume of intake steam
  2.    Pressure of intake steam
  3.    Temperature of intake steam
  4.    All of these
 Discuss Question
Answer: Option A. -> Volume of intake steam
Question 289. Throttle governing of steam engines is a method of controlling the engine output by varying
  1.    Volume of intake steam
  2.    Pressure of intake steam
  3.    Temperature of intake steam
  4.    All of these
 Discuss Question
Answer: Option B. -> Pressure of intake steam
Question 290. Lancashire boiler is used where working pressure and power required are
  1.    Low
  2.    Moderate
  3.    High
  4.    None of these
 Discuss Question
Answer: Option B. -> Moderate

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