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MCQs

Total Questions : 1935 | Page 102 of 194 pages
Question 1011.


The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.


  1.    remains same
  2.    decreases
  3.    increases
 Discuss Question
Answer: Option C. -> increases


Question 1012.

The ratio of total useful heat drop to the total isentropic heat drop, is called


  1.    stage efficiency
  2.    internal efficiency
  3.    Rankine efficiency
  4.    none of these
 Discuss Question
Answer: Option B. -> internal efficiency


Question 1013.

~The flow through a nozzle is regarded as


  1.    constant volume flow
  2.    constant pressure flow
  3.    isothermal flow
  4.    isentropic flow
 Discuss Question
Answer: Option D. -> isentropic flow


Question 1014.

A nozzle is said to be a convergent nozzle


  1.    when the cross-section of the nozzle increases continuously from entrance to exit
  2.    when the cross-section of the nozzle decreases continuously from entrance to exit
  3.    when the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit
  4.    none of the above
 Discuss Question
Answer: Option B. -> when the cross-section of the nozzle decreases continuously from entrance to exit


Question 1015.


A turbine is
said to have an axial discharge when the steam leaves the blade tip at
__________ to the direction of the blade motion.


  1.    `60^circ`
  2.    `90^circ`
  3.    `180^circ`
  4.    `270^circ`
 Discuss Question
Answer: Option B. -> `90^circ`


Question 1016. An air preheater is installed
  1.    before the economiser
  2.    before the superheater
  3.    between the economiser and chimney
  4.    none of these
 Discuss Question
Answer: Option C. -> between the economiser and chimney
Answer: (c).between the economiser and chimney
Question 1017. The length of shell of a Locomotive boiler is
  1.    1 m
  2.    2 m
  3.    3 m
  4.    4 m
 Discuss Question
Answer: Option D. -> 4 m
Answer: (d).4 m
Question 1018. In a uniflow engine
  1.    steam enters and exhausts through the same port
  2.    steam enters at one end and exhausts at the centre
  3.    steam enters at the centre and exhausts at the other end
  4.    none of the above
 Discuss Question
Answer: Option B. -> steam enters at one end and exhausts at the centre
Answer: (b).steam enters at one end and exhausts at the centre
Question 1019. The effect of wire drawing is to decrease the area of indicator diagram and thus work done by the engine is reduced.
  1.    Agree
  2.    Disagree
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Agree
Answer: (a).Agree
Question 1020. The shell diameter of a Locomotive boiler is
  1.    1 m
  2.    1.5 m
  3.    2 m
  4.    2.5 m
 Discuss Question
Answer: Option B. -> 1.5 m
Answer: (b).1.5 m

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