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Process Instrumentation and Control - Interview Questions and Answers

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51. Ring balance gauge is used for measurement of:
A. absolute pressure
B. vacuum
C. differential pressure
D. temperature
E. gauge pressure.
Explanation:
52. Accuracy of standard pressure gauges, used for testing and calibration purposes is of the order of :
A. � 1.5%
B. � 1%
C. � 0.5%
D. � 0.25%
E. �0.1%.
Explanation:
53. Target meter is concerned with measure-ment of:
A. flow
B. pressure
C. viscosity
D. density
E. level.
Explanation:
54. Flange taps in case of orifice plate are installed :
A. 25 mm from each side of the orfice plate
B. D (pipe diameter) upstream and D/2 downstream
C. just at surface of orifice plate
D. 2.5 D upstream and 8 D downstream
E. any one of the above.
Explanation:
55. Which of the following may be measured by the deflection of an elastic element, by balancing against a known force, by the acceleration produced in an object of known mass :
A. force
B. pressure
C. temperature
D. level
E. displacement.
Explanation:
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