Power Plant Questions and Answers – Kinetic and Diffusion Control – II

This set of Power Plant Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Kinetic and Diffusion Control – II”.

1. Higher fuel combustion efficiency cannot be achieved by __________
a) preheating of fuel gases & combustion air
b) supplying correct amount of combustion air
c) reducing sulphur content in the fuel
d) adopting proper fuel firing technique & fuel preparation
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2. Particular coal is said to be free burning when it __________
a) gives smokeless burning
b) shows little or no fusing action
c) burns completely
d) none of the mentioned
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3. Bunsen burner is an example of a/an __________ burner.
a) inside mixing/premix type
b) submerged combustion
c) rotary cup
d) outside mixing/diffusion flame/nozzle mix type
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4. The cooling medium used in dry quenching of coke is __________
a) nitrogen
b) air
c) phenolic water
d) carbon dioxide
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5. High amount of sulphur and phosphorous in coke causes __________
a) increase in its strength
b) decrease in its calorific value
c) brittleness of steel made by using it
d) none of the mentioned
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6. Cannel coal and boghead coal are the examples of __________
a) liptobiolites
b) humic coals
c) sapropelic coals
d) none of the mentioned
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7. The difference between total carbon and fixed carbon of coal will be minimum in case of __________
a) anthracite
b) lignite
c) bituminous
d) high temperature coke (V.M < 0.5%)
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8. Out of the following fuels, the difference between the net and gross calorific value is maximum in case of __________
a) fuel oil
b) blast furnace gas
c) bituminous coal
d) pitch
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9. Which of the following is the maximum coal producing state in India?
a) Orissa
b) West Bengal
c) Jharkhand
d) Assam
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10. A good quality coal should have __________
a) low fusion point of ash
b) high sulphur
c) high ash content
d) none of the mentioned
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11. __________ prohibits the use of alcohols directly in petrol engines.
a) High cost & difficult availability
b) Low octane number
c) Low flash point
d) Low calorific value
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12. The hottest part of the flame lies in its ___________ zone.
a) non-luminous
b) luminous
c) yellow
d) unburnt gases
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13. Percentage of methane in coke oven gas may be around __________
a) 5
b) 15
c) 25
d) 35
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Sanfoundry Global Education & Learning Series – Power Plant Engineering.

To practice all areas of Power Plant Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.