1. In general, in which part of the scale does the pointer indicate most accurately?
Correct : A. In the last third of the scale
2. Ionisation gauges can be used for measurement of pressures as low as
Correct : E. 0.000001 micron
3. A LVDT has
Correct : D. One primary coil and one secondary coil
4. Under force voltage analogy mass is considered analogous to
Correct : A. Industance
5. Piezoelectric crystal possesses the ability to convert
Correct : D. all the above
6. Which of the following is an indirect pressure measuring device?
Correct : B. Ionisation gauge
7. In the process of manufacture of copper sheets, the thickness of the sheet is to be continuously monitored. Which transducer will be most suitable for this purpose?
Correct : A. LVDT
8. Which of the following is not a non-contact type thermometer?
Correct : E. Suction pyrometer
9. Thermocouple used in radio micrometer and thermo-galvanometer is
Correct : A. Antimony - bismuth couple
10. Pico x tera
Correct : C. 1
11. A copper-constantan thermocouple can be used for the range of temperature from
Correct : C. ?175?C to 350?C
12. An accelerometer has a seismic mass of 0.05 kg and a spring constant of 3000 N/m. Maximum mass displacement is
Correct : E. 1200 m/s2
13. Under force voltage analogy, viscous friction coefficient is not considered analogous to
Correct : A. Resistance
14. In a CRO, ouput from which type of oscillator is applied to the horizontal deflection plate
Correct : C. sawtooth wave oscillator
15. Under the voltage analogy, charge is considered analogous to
Correct : C. Displacement
16. Main advantage of electrical measuring system over mechanical system is
Correct : B. minimum effects of friction
17. Pascal is the unit of
Correct : D. None of the above
18. Constantan is an alloy of
Correct : A. Nickel and copper
19. A strain gauge with high sensitivity and high gauge factor is
Correct : C. Semi-conductor strain gauge transducer
20. Flow of water in a pipe of 250 cm diameter can be measured by
Correct : A. Pitot tube
21. Which of the following instrument is suitable for measuring the temperature of a red hot moving material like molten steel or molten cst iron?
Correct : D. Radiation pyrometer
22. Under the conditions when the depth of water is too much, to make a continuous record of the depth of water below a boat or ship, the instrument generally used is
Correct : B. fathometer
23. Which of the following is an indirect method of pressure measurement?
Correct : E. All of the above
24. Basically D' Arsonwal movement is
Correct : B. current sensitive
25. Manganin does not contain
Correct : A. Zinc
26. A hot wire anemometer is a variable
Correct : E. Resistance transducer
27. A piezoelectric crystal can be used to measure
Correct : C. Acceleration
28. Rochelle salts are used
Correct : A. As piezoelectric crystals
29. Which of the following can be used as sensing element for an instrument?
Correct : E. Any of the above
30. Spot the odd one out
Correct : C. Strain gage
31. A geodimeter is based on the principle of
Correct : A. Propagation of modulated light waves
32. The lead zone is a certain pyrometer is 0.125 percent of span. The calibration is 400?C to 1000?C. What temperature change might occur before it is detected?
Correct : D. 0.75?C
33. Which of the following temperature is highest?
Correct : E. Melting point of tungsten
34. Meter accuracy is determined by
Correct : E. Full scale deflection
35. A pirani gauge is used to measure
Correct : D. Very low pressures
36. The freezing temperature of mercury is
Correct : C. ? 39?C
37. Natural error in measurement may be due to
Correct : E. Any of the above
38. The minimum change in the measured variable which produces an effective response of the instrument is known as
Correct : C. Resolution sensitivity
39. A polarograph is used for the analysis of
Correct : A. Solids
40. Under force-current analogy, mass is considered analogous to
Correct : A. Capacitance
41. Under force-voltage analogy, spring constant is considered analogous to
Correct : B. Reciprocal of inductance
42. LVDT converts
Correct : A. linear displacement into electrical signal
43. A pitot tube converts
Correct : B. Velocity head into pressure head
44. Rosette strain gauges are used for measurement of strain in
Correct : C. Complex parts
45. A rotameter can be used to measure
Correct : B. Flow
46. The main advantage of a CRO is
Correct : B. an inertialess beam of electrons acting as a pointer
47. An error that under the same conditions will always be of the same size and sign is known as
Correct : A. Mistake
48. Nitrocellulose cement is used with strain gauge as
Correct : C. Adhesive
49. Which of the following could be the source of random error in an instrument?
Correct : E. Any of the above
50. Which of the following strain sensing elements has the highest value of gauge factor
Correct : D. Soft iron
51. Under force-voltage analogy, velocity is considered as analogous to
Correct : C. Current
52. Which of the following is an electric tachometer?
Correct : E. All of the above
53. Phosphor bronze Bourdon tube can be used of pressures upto
Correct : C. 70 kg/cm2
54. The thermometer is calibrated 150?C to 200?C. The accuracy is specified within
Correct : B. 1?C
55. Which of the following is not an elecment of electro-pneumatic pressure transmitter?
Correct : D. Flapper nozzle mechanism
56. In case of obstruction meters used for flow measurement, pressure recovery is maximum in the case of
Correct : A. venturi
57. A transducer that converts the input physical phenomenon into an electrical output in the form of pulses is known as
Correct : C. Digital transducer
58. Which of the following statement is wrong for thermocouple measuring instruments?
Correct : B. When calibrated on dc they cannot be used for ac signals
59. In a load cell, strain gauge acts as a
Correct : D. Secondary transducer
60. Which of the following device can be used to measure blow of air around an aeroplane?
Correct : D. Anemometer
61. Under force-current analogy, mass is considered analogous to
Correct : E. Capacitance
62. Which of the following magnetic material has highest coercive force?
Correct : C. Alcomax
63. Metres A and B require 50 mA and mA respectively to give full scale deflection. It can be concluded that
Correct : B. B is more sensitive as compared to B
64. The accuracy of a 0 - 10 mV meter is
Correct : C. Either 9 mV or 11 mV
65. The gauge factor for doped crystal is in the range
Correct : A. 100 to 5000
66. Although semi-conductor strain gauges have high gauge factor still these are not preferred due to
Correct : E. Non-linearity and sensitivity to temperature fluctuations
67. A strain gauge material should have low
Correct : C. Resistance temperature coefficient
68. The statement 'the most probable value of an observed quantity available from a given lot of observations is the one for which the sum of the square of error is a minimum" is known as law of
Correct : C. least squares
69. A strain gage material should have low
Correct : C. resistance temperature coefficient
70. The least count of a vernier caliper used in industries is generally
Correct : C. 0.02 mm
71. The value of permissible error depends upon
Correct : D. All of the above
72. Stainless steel Bourdon tube pressure gauge joints are usually
Correct : A. Welded
73. Which of the following is generally not used as a thermocouple material?
Correct : C. Gold - Silver
74. A degital thermometer has 3
Correct : C. 1.999?C
75. A geodimeter is used for the measurements of
Correct : A. Distances
76. Which of the following has the number of significant figures other than 3?
Correct : A. 0.346 K?
77. Which of the following device can be used to measure temperatures of hot bodies radiating energy in visible spectrum
Correct : B. Optical pigometer
78. A strobotron is
Correct : C. A hot cathode gaseous discharge tube
79. A transducer which converts an input physical quantity into electrical output in the form of pulse is known as
Correct : C. digital transducer
80. Which of the following Bourdon tube material can be used for very high pressures?
Correct : B. Alloy steel
81. The adhesion between the surface of property wrung gage blocks is of the order of
Correct : C. 20-30 atmospheres
82. Under force-current analogy, displacement is considered as analogous to
Correct : B. Magnetic flux linkage
83. The temperature of freezing mercury is
Correct : B. ?39?C
84. The function of the reference electrode in a pH meter is to
Correct : B. Produce a constant voltage
85. In a digital instrument "over ranging" means
Correct : D. Half digit is switched on
86. Decibels are basically measures of
Correct : A. power gain
87. The maximum allowable limit that a measurement may vary from the true value is called
Correct : C. Permissible error
88. Accelerometer is the transducer for
Correct : D. All of the above
89. Which of the following material has maximum temperature coefficient of resistance
Correct : D. Monel
90. A tellurometer works on the principle of
Correct : D. High frequency radio waves
91. The salinometer measures
Correct : A. Density of brine
92. A hot wire anemometer is used to measure
Correct : C. gas velocities
93. Ionisation gauge is used to measure pressures
Correct : A. Below 3 microns
94. Which of the following torque transducer needs battery or rectified ac source for its operation?
Correct : E. All of the above
95. Synchronization in a CRO means
Correct : D. All of the above
96. Ceremets are
Correct : A. Resistance elements
97. Flow in an open channel can be measured by
Correct : D. None of the above
98. The flow in open channel can be measured by
Correct : C. Pitot tube
99. A geodimeter is used for the measurement of
Correct : C. distance
100. Temperature of a hot moving body can be measured by