Engineering :: Energy Conversion

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311.

For a power plant, the cost of labour is considered as

A.	fixed	B.	variable
C.	progressive, non-progressive	D.	major, minor

312.

In a thermal power plant, among the variable costs, fuel accounts for nearly

A.	20 to 25 percent of total cost	B.	30 to 50 percent of total cost
C.	75 to 80 percent of total cost	D.	90 to 98 percent of total cost

313.

Excess air requirement is more in case of

A.	chain grate stokers	B.	pulverized fuel burning
C.	oil firing	D.	gas firing

314.

In steam power plants exhaust steam from turbine goes to

A.	cooling tower	B.	economiser
C.	condenser	D.	air preheater

315.

Electrostatic precipitators are most effective on

A.	carbon dioxide	B.	nitrogen
C.	coarse dust	D.	fine dust

316.

Which of the following is a natural solid fuel?

A.	Pulverised coal	B.	Wood charcoal
C.	Bituminous coal	D.	Coking coal

317.

Which of the following fuel consists almost entirely of fixed carbon and ash?

A.	Lignite	B.	peat
C.	wood charcoal	D.	coke

318.

Which of the following process is used for the production of alcohol?

A.	Distillation	B.	Destructive distillation
C.	Cracking	D.	Fermentation

319.

Pulverized coal is fed to the boiler through

A.	stokers	B.	retorts
C.	fans	D.	burners

320.

The speed of the primemover is controlled by

A.	cam shaft	B.	feed pump
C.	regulator	D.	governor