A Best Way To Crack Gorenment Job Exams

Mechanical Engineering Objective Questions { Instrumentation and Control }



57. Vena-contracta taps are employed :
A.D upstream and D downstream from the plate
B.D upstream and at vena contracta
C.2 D upstream and at vena contracta
D.Just at surface of plate upstream and at vena contracta

58. For an orfice plate having ratio of inside and pipe diameter as 0.5, the pressure loss in comparison to differential pressure created is of the order of :
A.-0.05
B.50%.
C.0.2
D.0.35

59. 15? taper venturi tube causes loss of following % of the differential pressure :
A.0.05
B.0.1
C.0.2
D.0.3

60. Pick out false statement about advantages of orifice plates, used for flow measurement:
A.No moving parts
B.Long-term reliability
C.Highturn-down ratio
D.Inexpensive

61. Pick out false statement about disadvantages of orifice plates :
A.Square root relationship
B.Poor turn-down ratio
C.Critical installation requirements
D.Short-term reliability

62. Dall tube is another variation of
A.Orifice plate
B.Nozzle
C.Venturi tube
D.Rotameter

63. Target meter is concerned with measurement of :
A.Flow
B.Pressure
C.Viscosity
D.Density

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