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Mechanical Engineering Objective Questions { Power Plant Engineering }

43. The evaporation of 15.653 kg of water per hour from and at 100C is called
A.Evaporative capacity
B.Factor of evaporation
C.Equivalent evaporation
D.One boiler h.p.

44. The increase in pressure
A.Lowers the boiling point of a liquid
B.Raises the boiling point of a liquid
C.Sloes not affect the boiling point of a liquid
D.Reduces its volume

45. During polytropic process
A.Heat transfer takes place across cylinder walls
B.Work is done
C.Steam may tle Wet dry or, superheated after expansion
D.All of the above

46. Hygror, netery deals with the
A.Hygroscopic substances
B.Water vapour in aii
C.Temperature of air
D.Pressure of air

47. Orsat meter is used for
A.Gravimetric analysis of the flue gases
B.Volumetric analysis of the flue gases
C.Mass flow of the flue gases
D.Measuring smoke density of flue gases

48. Alkaline pyrogallate is used in Orsat's apparaturs for absorption of

49. An ideal regenerative cycle is
A.Equal to carnot cycle
B.Less than carnot cycle
C.More than carnot cycle
D.Could be anything

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