Category: Mechanical Engineering

Latest multiple choice questions with answers for mechanical engineering students.

Mechanical Engineering MCQs [Quiz 24]

Q1. The shell diameter and length of locomotive boiler are
(a) 1.5 m, 4 m
(b) 1.5 m, 6 m
(c) 1 m, 4 m
(d) 2 m, 4 m
(e) 1.5 m, 8 m.

Q2. The diameters of fire tubes and superheaer tubes in locomotive boiler are
(a) 47.5 mm, 130 mm
(b) 32.5 mm, 180 mm
(c) 65.5 mm, 210 mm
(d) 24.5 mm, 65 mm

Q3. The water tubes in a babcock and wilcox boiler are
(a) horizontal
(b) vertical
(c) inclined
(d) horizontal and inclined
(e) vertical and inclined.

Q4. Which of the following varieties of coals is mostly used in steam boilers
(a) non-coking bituminous coal
(b) brown coal
(c) peat
(d) coking bituminous coal
(e) none of the above.

Q5. The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is
(a) more
(b) less
(c) same
(d) could be more or less depending on other factors
(e) none of the above.

Q6. A boiler in India should conform to safety regulations of
(a) DIN
(b) BS
(c) ASTM
(d) IBR
(e) GOST.

Q7. The function of injector used in small steam plants is to
(a) create vacuum in furnace
(b) create vacuum at turbine exhaust
(c) pump feed water
(d) dose chemicals in feed water
(e) control steam temperature by injecting water.

Q8. Which of the following boilers is best suited to meet fluctuating demands
(a) babcock and wilcox
(b) locomotive
(c) lancashire
(d) cochran
(e) comish.

Q9. The difference between cornish boiler and lancashire boiler is that
(a) former is fire tube type and latter is water tube type boiler
(b) former is water tube type and latter is fire tube type
(c) former contains one fire tube and latter contains two fire tubes
(e) none/of the above.

Q10. In accelerated circulation type boiler
(a) heating takes place at bottom and the water supplied at bottom gets converted into the mixture of stdam bubbles and hot water which rise to durm
(b) water is supplied in drum and through downcomers” located in atmospheric conditon it passes to the water wall and rises to durm in the from of mixture of water and steam
(c) feed pump is employed to supplement natural circulation in water wall type furnace
(e) water is converted into steam in one pass without any recirculation
(e) water is fed under high pressure and high velocity

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