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Steam boiler engine nozzle turbine
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q41 ⇒ Equivalent evaporation of water is the evaporation "for a feed water supply at 100°C and its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm2 [other wrong options] [Discuss in forum] and its corresponding conversion into dry steam at desired boiler pressure conversion into steam at atmospheric condition conversion into steam at the same pres-sure at which feed water is supplied none of the above. |
Q42 ⇒ The evaporation of 15.653 kg of water per hour from and at 100°C is called one boiler h.p. [other wrong options] [Discuss in forum] evaporative capacity factor of evaporation equivalent evaporation boiler efficiency. |
Q43 ⇒ The increase in pressure raises the boiling point of a liquid [other wrong options] [Discuss in forum] lowers the boiling point of a liquid .does not affect the boiling point of a liquid reduces its volume none of the above. |
Q44 ⇒ During polytropic process all of the above [other wrong options] [Discuss in forum] heat transfer takes place across cylinder walls work is done steam may be wet, dry or superheated after expansion none of the above. |
Q45 ⇒ Hygrometery deals with the water vapour in air [other wrong options] [Discuss in forum] Hygroscopic substances temperature of air pressure of air density measurement. |
Q46 ⇒ Orsat meter is used for volumetric analysis of the flue gases [other wrong options] [Discuss in forum] gravimetric analysis of the flue gases mass flow of the flue gases measuring smoke density of flue gases none of the above. |
Q47 ⇒ Alkaline pyrogallate is used in Orsat's apparatus for absorption of 02 [other wrong options] [Discuss in forum] C02 CO N2 none of the above. |
Q48 ⇒ An ideal regenerative cycle is less than carnot cycle [other wrong options] [Discuss in forum] equal to carnot cycle more than carnot cycle could be anything none of the above. |
Q49 ⇒ Efficiency of rankine cycle can be increased by decreasing initial steam pressure and temperature [other wrong options] [Discuss in forum] increasing exhaust pressure decreasing exhaust pressure increasing the expansion ratio increasing number of regenerative heaters. |
Q50 ⇒ Cochran boiler is a vertical fire tube boiler [other wrong options] [Discuss in forum] horizontal fire-tube boiler horizontal water-tube boiler veritcal water-tube boiler forced circulating boiler. |
Q51 ⇒ Lancashire 'boiler is a stationary fire tube boiler [other wrong options] [Discuss in forum] stationary water tube boiler water tube boiler with natural/forced circulation mobile fire tube boiler none of the above. |
Q52 ⇒ Efficiency of a thermal cycle increases by both (a) and (b) [other wrong options] [Discuss in forum] regeneration reheating of steam cooling of steam none of the above. |
Q53 ⇒ One kilowatt-hour energy is equivalent to 3600 kJ [other wrong options] [Discuss in forum] 1000 J 360 kJ 3600 kW/sec 1000 kJ. |
Q54 ⇒ Which of the following gases has the highest calorific value coal gas. [other wrong options] [Discuss in forum] producer gas water gas blast furnace gas coke oven gas. |
Q55 ⇒ 100% efficiency of a thermal cycle cannot be achieved because of it is not possible to achieve 0°K temperature [other wrong options] [Discuss in forum] frictional losses leakage non-availability of ideal substance none of the above. |
Q56 ⇒ For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is 4/3kg [other wrong options] [Discuss in forum] 1 kg 8/3kg 2 kg 16/3 kg. |
Q57 ⇒ The diameter of Cornish boiler is of the order of 1-2 m [other wrong options] [Discuss in forum] 1.5-2.5 m 2-3 m 2.5-3.5 m 0.5 to 1 m. |
Q58 ⇒ The length of Cornish boiler is of the order of 5-7.5 m [other wrong options] [Discuss in forum] 2-4 m 3-5 m 7-9 m 9-11 m. |
Q59 ⇒ The diameter of fire tube of Cornish boiler compared to its shell is one half [other wrong options] [Discuss in forum] one third one-fifth two-fifth three-fifth. |
Q60 ⇒ Steam engine operates on brayton cycle [other wrong options] [Discuss in forum] carnot cycle joule cycle Stirling cycle none of the above. |
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