Download PDF
Free download in PDF Pressure Measurement Multiple Choice Questions with 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.
61
In AC bridges, the Wagner earth devices are used to …………….
[A]
Reduce error caused by stray electric field
[B]
Remove harmonics
[C]
Remove all the earth capacitances from the bridge circuit
[D]
All of these
62
The error between the mean of finite data set and mean of infinite data set is known as ………….
[A]
Standard error of the mean
[B]
True error of the mean
[C]
Infinite error
[D]
Finite error
Answer: Standard error of the mean
63
Resolver works on the principal of mutual inductance variation. It is mainly used for the measurement of ……………
[A]
Rotary motion
[B]
Linear displacement
[C]
Non – linear displacement
[D]
All of these
64
LVDT which is an instrument for the measurement of displacement, works on the principal of ……..
[A]
Mutual inductance
[B]
Linear inductance
[C]
Non – linear inductance
[D]
Linear capacitance
Answer: Mutual inductance
65
The instruments used for the measurement of pressure is / are …………….
[A]
Bellows
[B]
Diaphragms
[C]
Fiber optic pressure sensors
[D]
All of these
66
The two wattmeters used for the measurement of power input read 50 kW each. What will be the readings of the two wattmeters if the power factor is changed to 0.8 leading keeping the total input power same?
[A]
31.25W, 73.71W
[B]
33.33W, 73.33W
[C]
28.35W, 71.65W
[D]
none of the above
67
The Wien’s bridges is suitable for the measurement of frequency of the range of ……….
[A]
100 Hz to 100 kHz
[B]
Less than 100 Hz
[C]
More than 100 MHz
[D]
1 kHz to 100 MHz
Answer: 100 Hz to 100 kHz
68
The frequency errors in induction instruments can be compensated by the use of ………..
[A]
Non inductive shunt in case of ammeters and are generally self compensated in case of voltmeters
[B]
Non inductive shunt in both ammeters and voltmeters
[C]
Self compensated in case of ammeters and non inductive shunt in case of voltmeters
[D]
None of the above
Answer: Non inductive shunt in case of ammeters and are generally self compensated in case of voltmeters
69
Calibration of instrument is an important consideration in measurement system. The errors due to instruments being out of calibration can be rectified by …………..
[A]
Increasing the temperature coefficient
[B]
Increasing the susceptibility of measuring instrument
[C]
Increasing the frequency of recalibration
[D]
None of these
Answer: Increasing the frequency of recalibration
70
Instrument which is capable of discriminating temperature differences of even 0.1 degree Celsius is ………..
[A]
Thermography
[B]
Fibre – optic level sensors
[C]
Laser method
[D]
none of the above
71
Schering bridges are used for the measurement of ………..
[A]
Power factor
[B]
Unknown capacitance
[C]
Dielectric loss
[D]
All of these
72
The AC Bridge which is used for the measurement of frequency is …………
[A]
Wien bridge
[B]
Schering bridge
[C]
Anderson bridge
[D]
Hay’s bridge
73
Primary current in a current transformer is determined by ………
[A]
The load on its own secondary
[B]
The load on its own primary
[C]
The load on the system
[D]
All of these
Answer: The load on the system
74
The bridge suitable for the measurement of capacitance is / are ………
[A]
Owen’s bridge
[B]
Anderson’s bridge
[C]
Hay’s bridge
[D]
None of these
75
A moving-coil permanent-magnet instrument can be used as ………….. by using a low resistance shunt.
[A]
voltmeter
[B]
flux-meter
[C]
ammeter
[D]
ballistic galvanometer
76
A …………. device prevents the oscillation of the moving system and enables the latter to reach its final position quickly.
[A]
damping
[B]
controlling
[C]
deflecting
[D]
all of the above
77
A potentiometer may be used for …………
[A]
measurement of current
[B]
calibration of ammeter
[C]
measurement of resistance
[D]
all of the above
78
……………. are not used on D.C. circuits.
[A]
induction meters
[B]
Mercury motor meters
[C]
commutator motor meters
[D]
none of the above
79
In majority of instruments, damping is provided by ………
[A]
eddy currents
[B]
spring
[C]
fluid friction
[D]
all of the above
80
Electrical equipments are generally earthed through an electrode to avoid shocks when someone touches the body of the equipment. The earth resistance is effected by …………..
[A]
Specific resistance of the soil surrounding the electrode
[B]
Shape and material of earth electrodes
[C]
Depth of electrodes buried in the soil
[D]
All of these
Take Mock Tests