Quiz Steam Boilers and Turbines Online Questions Test2

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1. Orsat meter is used for _____.
gravimetric analysis of the flue gases	volumetric analysis of the flue gases
mass flow of the flue gases	measuring smoke density of flue gases

2. Alkaline pyrogallate is used in Orsat's apparatus for absorption of _____.
C02	CO
02	N2

3. An ideal regenerative cycle is _____.
equal to carnot cycle	less than carnot cycle
more than carnot cycle	could be anything

4. Efficiency of rankine cycle can be increased by _____.
decreasing initial steam pressure and temperature	increasing exhaust pressure
decreasing exhaust pressure	increasing the expansion ratio

5. Cochran boiler is a ______.
horizontal firetube boiler	horizontal water-tube boiler
veritcal water-tube boiler	vertical fire tube boiler

6. Lancashire 'boiler is a ____.
stationary fire tube boiler	stationary water tube boiler
water tube boiler with natural/forced circulation	mobile fire tube boiler

7. Efficiency of a thermal cycle increases by _____.
regeneration	reheating of steam
both (a) and (b)	cooling of steam

8. One kilowatt-hour energy is equivalent to _____.
1000 J	360 kJ
3600 kJ	3600 kW/sec

9. Which of the following gases has the highest calorific value
producer gas	coal gas
water gas	blast furnace gas

10. 100% efficiency of a thermal cycle cannot be achieved because of _____.
frictional losses	it is not possible to achieve 0°K temperature
leakage	non-availability of ideal substance

11. For burning 1 kg of carbon to CO as per chemically correct combusiton, amount of air required is _____.
1 kg	4/3kg
8/3kg	2 kg

12. The diameter of Cornish boiler is of the order of _____.
1-2 m	1.5-2.5 m
2-3 m	2.5-3.5 m

13. The lenght of Cornish boiler is of the order of _____.
2-4 m	3-5 m
5-7.5 m	7-9 m

14. The diameter of fire tube of Cornish boiler compared to its shell is _____.
one half	one third
one-fifth	two-fifth

15. Steam engine operates on ______.
carnot cycle	joule cycle
Stirling cycle	brayton cycle

16. The change in internal energy in steam engines equals to _____.
work done during the rankine cycle	work done during compression
work done during adiabatic expansion	change in enthalpy

17. Water tube boilers are those in which
flue gases pass through tubes and water around it	water passes through the tubes and flue gases around it
work is done during adiabatic expansion	change in enthalpy

18. Locomotive type' boiler is _____.
horizontal multitubular water tube boiler	water wall enclosed furnace type
vertical tubular fire tube type	horizontal multi-tubular fire tube type

19. Lancashire boiler is of ____.
stationary	horizontal type
natural cirulation type	all of the above

20. Fire tube boilers are those in which
flue gases pass through tubes and water around it	water passes through the tubes and flue gases around it
forced circulation takes place	tubes are laid vertically