31. The development of following element has improved the reliability and the response action of low pressure gauges :
(a) diaphragm
(b) capsule
(c) bourdon
(d) ring balance
(e) all of the above.
Ans: b
32. Proving rings are used to measure :
(a) displacement
(b) force
(c) velocity
(d) acceleration
(e) shock.
Ans: b
33. Which is not correct about load cells used to measure weight/force :
(a) accuracy of the order of 0.01 to 1%
(b) rugged and compact construction
(c) no moving parts and negligible deflection under load
(d) low resistance to side load and low overload withstand
(e) hermetically sealed and thermal compensation.
Ans: d
34. Which type of device is suitable for dynamic force measurement:
(a) lever balance
(b) spring balance
(c) proving ring
(d) piezo-electric transducer
(e) all of the above.
Ans: d
1935. Hysteresis errors in Bourdon tubes can be minimized by :
(a) selecting proper material
(b) proper design and fabrication
(c) using them well within the designed pressure range
(d) avoiding direct entry of steam into it
(e) calibrating it from time to time.
Ans: c
36. In case of strain gauge transducers, several strain cycles, and temperature cycles are carried out before making measurements, in order to :
(a) increase life
(b) enable high repeatable readings
(c) eliminate premature failures
(d) increase accuracy
(e) avoid drift.
Ans: b
37. 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%.
Ans: d
38. Which gauge is based on the change of heat conductivity of a gas with pressure and the change of electrical resistance of a wire with temperature :
(a) thermocouple gauge
(b) Bourdon gauge
(c) Ionization gauge
(d) nuitating disk gauge
(e) Pirani gauge.
Ans: e
39. Which of the following have relatively large and negative temperature coefficients of resistance :
(a) radiation pyrometers
(b) optical pyrometers
(c) thermistors
(d) platinum resistance detectors
(e) thermocouples.
Ans: c
40. Thermal expansion of a solid is employed in :
(a) thermocouple
(b) resistance thermometer
(c) bulb thermometer
(d) bimetal element
(e) zener diode.
Ans: d
Read More Questions:
Process Instrumentation and Control - Mechanical Engineering MCQs Part1
Process Instrumentation and Control - Mechanical Engineering MCQs Part2
(a) diaphragm
(b) capsule
(c) bourdon
(d) ring balance
(e) all of the above.
Ans: b
32. Proving rings are used to measure :
(a) displacement
(b) force
(c) velocity
(d) acceleration
(e) shock.
Ans: b
33. Which is not correct about load cells used to measure weight/force :
(a) accuracy of the order of 0.01 to 1%
(b) rugged and compact construction
(c) no moving parts and negligible deflection under load
(d) low resistance to side load and low overload withstand
(e) hermetically sealed and thermal compensation.
Ans: d
34. Which type of device is suitable for dynamic force measurement:
(a) lever balance
(b) spring balance
(c) proving ring
(d) piezo-electric transducer
(e) all of the above.
Ans: d
1935. Hysteresis errors in Bourdon tubes can be minimized by :
(a) selecting proper material
(b) proper design and fabrication
(c) using them well within the designed pressure range
(d) avoiding direct entry of steam into it
(e) calibrating it from time to time.
Ans: c
36. In case of strain gauge transducers, several strain cycles, and temperature cycles are carried out before making measurements, in order to :
(a) increase life
(b) enable high repeatable readings
(c) eliminate premature failures
(d) increase accuracy
(e) avoid drift.
Ans: b
37. 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%.
Ans: d
38. Which gauge is based on the change of heat conductivity of a gas with pressure and the change of electrical resistance of a wire with temperature :
(a) thermocouple gauge
(b) Bourdon gauge
(c) Ionization gauge
(d) nuitating disk gauge
(e) Pirani gauge.
Ans: e
39. Which of the following have relatively large and negative temperature coefficients of resistance :
(a) radiation pyrometers
(b) optical pyrometers
(c) thermistors
(d) platinum resistance detectors
(e) thermocouples.
Ans: c
40. Thermal expansion of a solid is employed in :
(a) thermocouple
(b) resistance thermometer
(c) bulb thermometer
(d) bimetal element
(e) zener diode.
Ans: d
Read More Questions:
Process Instrumentation and Control - Mechanical Engineering MCQs Part1
Process Instrumentation and Control - Mechanical Engineering MCQs Part2
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