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MCQs 1: The diameters of fire tubes and superheaer tubes in locomotive boiler are_________________?

47.5 mm, 130 mm 32.5 mm, 180 mm 65.5 mm, 210 mm 24.5 mm, 65 mm
Answer Explanation

MCQs 2: The water tubes in a babcock and wilcox boiler are__________________?

horizontal vertical inclined horizontal and inclined vertical and inclined
Answer Explanation

MCQs 3: The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is___________________?

more less same could be more or less depending on other factors none of the above
Answer Explanation

MCQs 4: The function of injector used in small steam plants is to________________?

create vacuum in furnace create vacuum at turbine exhaust pump feed water dose chemicals in feed water control steam temperature by injecting water
Answer Explanation

MCQs 5: The basic purpose of drum in boiler is to_____________________?

serve as storage of steam serve as storage of feed water for water wall remove salts from water separate steam from water control level
Answer Explanation

MCQs 6: The fire tubes in, a Coarran and Scotish marine boiler are_________________?

horizontal vertical inclined both horizontal and vertical horizontal and inclined
Answer Explanation

MCQs 7: The crown of the fire box is made hemispherical in order to___________________?

give maximum space give maximum strength withstand pressure inside boiler resist intense heat in fire box enable easy,manufacture
Answer Explanation

MCQs 8: Which of the following coals has the highest calorific value_________________?

anthracite coal bituminous coal lignite peat wood
Answer Explanation

MCQs 9: A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are________________?

supplied by same manufacturer loose and assembled at site supplied mounted on a single base purchased from several parties and packed together at site packaged boiler does not exist none of the above
Answer Explanation

MCQs 10: Which of the following is a water tube boiler_________________?

locomotive boiler Cochran boiler Cornish boiler Babcock and Wilcox boiler Lancashire boiler
Answer Explanation

MCQs 11: The number of flue tubes in Lancashire boiler is_________________?

zero one two four many
Answer Explanation

MCQs 12: 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 none of the above
Answer Explanation

MCQs 13: 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 none of the above types
Answer Explanation

MCQs 14: 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 none of the above
Answer Explanation

MCQs 15: The diameter of fire tube of Cornish boiler compared to its shell is__________________?

one half one third one-fifth two-fifth three-fifth
Answer Explanation

MCQs 16: 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 none of the above
Answer Explanation

MCQs 17: One kilowatt-hour energy is equivalent to ________________?

1000 J 360 kJ 3600 kJ 3600 kW/sec 1000 kJ
Answer Explanation

MCQs 18: Lancashire ‘boiler is a__________________?

stationary fire tube boiler stationary water tube boiler water tube boiler with natural/forced circulation mobile fire tube boiler none of the above
Answer Explanation

MCQs 19: An ideal regenerative cycle is ______________________?

equal to carnot cycle less than carnot cycle more than carnot cycle could be anything none of the above
Answer Explanation

MCQs 20: 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 none of the above
Answer Explanation

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