Lakshya Education MCQs

Question: Blading efficiency is also known as
A. Stage efficiency
B. Diagram efficiency
C. Nozzle efficiency
D. None of these
Answer: Option B

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More Questions on This Topic :

Question 1. In order to obtain superheated steam, a superheater is added in an existing boiler. as as result, furnace vacuum will
  1.     Remain unaffected
  2.     Improve
  3.     Worsen
  4.     May improve/worsen depending on size
Answer: Option C
Question 2. In a de-laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p₂) will be
  1.     3.3 bar
  2.     5.46 bar
  3.     8.2 bar
  4.     9.9 bar
Answer: Option B
Question 3. The water tubes in a simple vertical boiler are
  1.     Horizontal
  2.     Vertical
  3.     Inclined
  4.     None of these
Answer: Option C
Question 4. Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where i.p. = indicated power)
  1.     1/(I.P)
  2.     1/(I.P)²
  3.     I.P.
  4.     (I.P.)²
Answer: Option C
Question 5. One kilowatt-hour energy is equivalent to
  1.     1000 J
  2.     360 kJ
  3.     3600 kJ
  4.     3600 kW/sec
Answer: Option C
Question 6. The behavior of coal in a furnace is determined by
  1.     The content of sulphur
  2.     The content of ash and heating value
  3.     The proximate analysis
  4.     The exact analysis
Answer: Option C

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