Power Plant Questions and Answers – Coal-Oil & Coal-Water Mixtures – I

This set of Power Plant Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Coal-Oil & Coal-Water Mixtures – I”.

1. Which of the following is not considered a type of coal according to ASTM?
a) anthracite
b) bituminous
c) peat
d) lignite
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2. Which of the following is not directly determined in the Proximate Analysis of coal?
a) Volatile Matter
b) Fixed Carbon
c) Moisture
d) Ash
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3. Which of these is not a component of coal in Ultimate Analysis?
a) carbon
b) sulphur
c) ash
d) phosphor
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4. If M and A represent the percentages of moisture and ash respectively, the dry and ash free analysis in Ultimate Analysis is obtained on dividing other components by the fraction of?
a) {1-(M+A)}/100
b) {1-(M-A)}/100
c) {1-(A-M)}/100
d) 1-{(M+A)/100}
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5. The extent of caking in coal is determined using __________
a) swelling index
b) grindability
c) weatherability
d) heating value
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6. Coke devoid of volatile matter is called __________
a) caking coal
b) free-burning coal
c) agglomerate
d) coke
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7. Which of the following property is the inverse of the power required to grind coal to a particular size for burning?
a) heating value
b) weatherabillity
c) grindability
d) sulphur content
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8. The design of steam generator greatly depends on __________
a) spontaneous combustion
b) sulphur content
c) ash softening temperature
d) heating value
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Sanfoundry Global Education & Learning Series – Power Plant Engineering.

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