Lakshya Education MCQs

Question: The amount of water evaporated in kg per kg of fuel burnt is called
Options:
A. Evaporative capacity of a boiler
B. Equivalent evaporation from and at 100° C
C. Boiler efficiency
D. None of these
Answer: Option A

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More Questions on This Topic :

Question 1. Coke is produced by
  1.     Pulverizing coal in inert atmosphere
  2.     Heating wood in a limited supply of air at temperatures below 300°C
  3.     Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
  4.     Enriching carbon in the coal
Answer: Option C
Question 2. Pick up the correct statement as regards cornish boiler and lancashire boiler
  1.     Cornish is fire tube and Lancashire is water tube
  2.     Cornish is water tube and Lancashire is fire tube
  3.     Cornish has two fire tubes and Lancashire has one
  4.     Lancashire has two fire tubes and Cornish has one
Answer: Option D
Question 3. A throttle governed steam engine develops 15 kw with 280 kg per hour of steam and 35 kw with 520 kg per hour of steam. the steam consumption in kg per hour when developing 20 kw will be nearly
  1.     150 kg/h
  2.     210 kg/h
  3.     280 kg/h
  4.     340 kg/h
Answer: Option D
Question 4. Thermal efficiency of well maintained boiler will be of the order
  1.     40 %
  2.     50 %
  3.     75 %
  4.     90 %
Answer: Option D
Question 5. The amount of water evaporated in kg per kg of fuel burnt is called
  1.     Evaporative capacity of a boiler
  2.     Equivalent evaporation from and at 100° C
  3.     Boiler efficiency
  4.     None of these
Answer: Option A
Question 6. Coke is produced by
  1.     Pulverizing coal in inert atmosphere
  2.     Heating wood in a limited supply of air at temperatures below 300°C
  3.     Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
  4.     Enriching carbon in the coal
Answer: Option C

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