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Free download in PDF Pressure Measurement Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(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
(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
(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
(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)
31
The displacement measuring instruments is / are ………
[A]
Potentiometer
[B]
RVDT
[C]
LVDT
[D]
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
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
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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