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
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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
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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
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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
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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
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62. Dall tube is another variation of
A.Orifice plate
B.Nozzle
C.Venturi tube
D.Rotameter
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63. Target meter is concerned with measurement of :
A.Flow
B.Pressure
C.Viscosity
D.Density
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