This set of Power Plant Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Fuel Oil”.
1. The bulk of hydrocarbon belongs to which group?
a) paraffin
b) isoparaffin
c) cycloparaffin
d) aromatic
View Answer
Explanation: A bulk of hydrocarbons in fuel oils belongs to paraffin series like methane, ethane.
2. Which of these is not a lighter fraction of fuel oil?
a) gasoline
b) aviation fuel
c) heavy diesel oil
d) boiler fuel
View Answer
Explanation: Boiler fuel is one of the heavier fraction in the refining process of fuel oil.
3. Which of these properties specifies the minimum temperature at which fuel oil can be ignited?
a) pour point
b) flash point
c) heating value
d) viscosity
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Explanation: The flash point is the minimum temperature at which fuel may be ignited.
4. Which of the following type of fuel does not contain ash?
a) coal
b) fuel oil
c) natural gas
d) synthetic fuels
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Explanation: Because of its gaseous nature, natural gas is the cleanest of all fuel types as it does contain ash and also produces no smoke on combustion.
5. Which of these gases is the reason for the maintenance of natural gas at cryogenic temperatures?
a) methane
b) ethane
c) propane
d) benzene
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Explanation: The major component of natural gas is methane, whose critical temperature is -83C . So cryogenic temperatures are needed to maintain them it in liquid state at moderate pressure.
6. The gas which contributes maximum to heating value of natural gas is?
a) CO
b) CO2
c) H2
d) CH4
View Answer
Explanation: CH4 gas contributes maximum to the heating value of natural gas.
7. A coal containing high percentage of durian is called _________
a) splint
b) bright
c) boghead
d) non-banded
View Answer
Explanation: Coal containing high percentage of durian is called splint.
8. Low temperature carbonisation _________
a) produces less quantity of tar than high temperature carbonisation
b) is mainly producing smokeless domestic coke
c) is meant for production of ‘metallurgical coke’
d) produces higher temperature gas than high temperature carbonisation
View Answer
Explanation: During this process, the fuel is broken down into solid residue called semicoke, a primary gas and a watery condensate.
Sanfoundry Global Education & Learning Series – Power Plant Engineering.
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