Pressure Measurement Quiz | Pressure Measurement Objective Type Questions and Answers

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Questions
21 Vibration galvanometer are generally used ……………
A As null – point detectors in ac bridges
B For measuring electric charges
C As null – point detectors in dc bridges
D For measuring power

Answer: As null – point detectors in ac bridges
22 For the measurement of unknown inductance in terms of known capacitance, the suitable ac bridges are ………..
A Maxwell and Hay’s bridge
B Maxwell and Schering bridge
C Maxwell and Wien’s bridge
D Hay’s and Wien’s bridge

Answer: Maxwell and Hay’s bridge
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23 Swamping resistance is a resistance made up of ………………
A Alloy of manganin and aluminium
B Alloy of aluminium and copper
C Alloy of nickel and cobalt
D Alloy of manganin and copper

Answer: Alloy of manganin and copper
24 In a moving coil of a meter swamping resistance is added to ……….
A Reduce the temperature error
B Reduce the frequency error
C Reduce the power consumption
D All of these

Answer: Reduce the temperature error
25 Induction type instruments are generally used as ……….
A Ammeter
B Wattmeter
C Voltmeter
D All of these

Answer: All of these
26 Damping torque is the torque which acts on …………..
A Moving system of the instrument only when it is moving
B Stationary system of the instrument
C Moving system of the instrument only when it is stationary
D Stationary system of the instrument only when the moving system is moving

Answer: Moving system of the instrument only when it is moving
27 Random errors in a measurement system are due to …………..
A Environmental changes
B Unpredictable effects
C Use of uncalibrated instrument
D Poor cabling practices

Answer: Unpredictable effects
28 If the instrument is used in wrong manner while application, then it will results in ……….
A Systematic error
B Random error
C Instrument error
D None of the above

Answer: Instrument error
29 The systematic errors of an instrument can be reduced by making ………….
A The sensitivity of instrument to environmental input as high as possible
B Systematic errors does not depend on the sensitivity of instrument
C The sensitivity of instrument to environmental input as low as possible
D None of these

Answer: The sensitivity of instrument to environmental input as low as possible
30 The magnitude of environment – induced variation from the specified calibration condition is quantified by ………
A Sensitivity drift
B Zero drift
C Backlash
D Both (1) & (2)

Answer: Both (1) & (2)
31 The displacement measuring instruments is / are ………
A Potentiometer
B RVDT
C LVDT
D All of these

Answer: All of these
32 In fibre – optic level sensors, the amount of light loss depends on ………..
A Amount of light which is reflected back
B The proportion of cable that is not in the liquid
C Amount of light which is not reflected back
D The proportion of cable that is submerged in the liquid

Answer: The proportion of cable that is submerged in the liquid
33 For the measurement of pressure the instruments used can be ……….
A Electronic
B Mechanical
C Electro – mechanical
D All of these

Answer: All of these
34 The transformer ratio of the transformer depends upon the …………
A Power factor of secondary circuit
B Exciting current
C Secondary current
D All of these

Answer: All of these
35 Which of the following is detected using manometer devices?
A Density difference between manometric and measuring liquid
B pH difference between manometric and measuring liquid
C Pressure difference between manometric and measuring liquid
D None of the mentioned

Answer: Pressure difference between manometric and measuring liquid
36 Which of the following applications are suited for thin plate diaphragms?
A Static pressure only
B Dynamic pressure only
C Both static and dynamic pressure with large frequency
D Both static and dynamic pressure with small frequency

Answer: Both static and dynamic pressure with small frequency
37 Identify the proper sequence of valve actions for a three-valve manifold and bleed when taking a differential pressure transmitter out of service:
A Close one block valve, open equalizing valve, close other block valve, open bleed
B Open bleed, close one block valve, open equalizing valve, close other block valve
C Close one block valve, open bleed, close other block valve, open equalizing valve
D Open equalizing valve, open bleed, close both block valves (simultaneously)

Answer: Close one block valve, open equalizing valve, close other block valve, open bleed
38 A moving-coil permanent-magnet instrument can be used as flux-meter by ………………
A using a low resistance shunt
B using a high series resistance
C eliminating the control springs
D making control springs of large moment of inertia

Answer: eliminating the control springs
39 In rotary variable differential transformer, the mutual inductance between the primary and secondary coils varies …………
A Linearly with the angular displacement
B Non – linearly with the linear displacement
C Linearly with the linear displacement
D Non – linearly with the angular displacement

Answer: Linearly with the angular displacement
40 The household energy meter is ………..
A an indicating instrument
B a recording instrument
C an integrating instrument
D none of the above

Answer: an integrating instrument
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