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231.

An Orsat's apparatus is used for

A.	Volumetric analysis of the flue gas	B.	Gravimetric analysis of the flue gases
C.	Smoke density analysis of the flue gases	D.	All of above
E.	None of above

232.

High air-fuel ratio in gas turbines

A.	Reduces the exhaust temperature	B.	Improves thermal efficiency
C.	Increases power output	D.	Restricts damage to turbine blades
E.	None of the above

233.

A plant costing Rs. 80,000 has a useful life of 12 years. The amount that should be saved annually to replace the equipment at the end of useful life with salvage value of Rs. 8,000 should be

A.	Rs. 5000	B.	Rs. 6000
C.	Rs. 8000	D.	Rs. 10000
E.	Rs. 15000

234.

A 200 MW generator should be cooled by

A.	Air	B.	Water
C.	Hydrogen	D.	Nitrogen
E.	Hydrogen peroxide

235.

Overall thermal efficiency of a thermal power plant is

A.	Carnot cycle efficiency	B.	50 to 70% of theoretical efficiency
C.	Product of boiler efficiency, turbine efficiency and generator efficiency	D.	Rankine cycle efficiency
E.	None of the above

236.

Piston rings are made of

A.	Carbon steel	B.	Alloy steel
C.	Aluminium	D.	Cast iron
E.	Copper

237.

Total solid impurities in feed water for a boiler depend upon

A.	Boiler pressure	B.	Quantity of steam to be generated
C.	Type of fuel available	D.	Quantity of steam
E.	None of the above

238.

A run-of-river hydro-electric station is one which is

A.	Located on a small river	B.	Located on a river which does not flow throughout the year
C.	Located on a steam flow without water storage	D.	Locted on a steam flow with large water storage
E.	None of the above

239.

In a system if base load is same as maximum demand, the load factor will be

A.	1	B.	Zero
C.	Infinity	D.	1 percent
E.	0.5 percent

240.

A system having connected load of 100 kW, peak load of 80 kW, base load of 20 kW and average load of 40 kW will have a load factor of

A.	40%	B.	50%
C.	60%	D.	75%
E.	80%