1. Synchro is a rotating device that operates on the same principle as a _ _ _ _ _ _
and produces a set of voltages, correlated to angular position.
Correct : A. Transformer principle
2. What is the principle of operation of LVDT?
Correct : A. Mutual inductance
3. In GPS, Control segment consists of a master control station and _ _ _ _ other
monitor stations.
Correct : B. 4
4. Potentiometer is a _ _ _ _ _
Correct : B. Passive transducer
5. _ _ _ _ _ is an analog position sensor that is absolute over a single turn.
Correct : B. Resolver
6. Each satellite takes _ _ _ _ _in completing one full orbit and repeats the same
ground track each day.
Correct : B. 12 hour
7. Bluetooth Network consists of a Personal Area Network which contains a
minimum of ___to maximum of ___ Bluetooth peer devices.
Correct : C. 2,8
8. LiDAR stands for _ _ _ _ _ _ _ _
Correct : B. Light detection and Ranging
9. In optical encoder, the inner track has just one hole which is used locate the ‘_ _
_ _of the disc.
Correct : B. Home position
10. The GPS satellite comprises of sun seeking _ _ _ _ having _ _ _ _ providing
secondary power.
Correct : B. Solar panels and Ni Cad batteries
11. Forklift uses _ _ _ _ _ _ sensor
Correct : A. Potentiometer
12. An _ _ _ _ _ _ is an electromechanical device used to measure acceleration forces
such as static or dynamic
Correct : B. Resolver
13. How many satellites are used to gather the exact location using GPS?
Correct : D. 4
14. _ _ _ _ _used where rotational or angular displacements are to be measured
Correct : B. RVDT
15. Applications of Lidar _ _ _ _ _
Correct : D. All the above
16. The required and nominal range of Bluetooth device is _ _ _ __
Correct : A. 10
17. _ _ _ _ _ sensors are not affected by ambient conditions, such as dust, humidity, and vibrations and are insensitive to some ambient conditions based on the principle that these sensors display a constant flow of electrical current, making their characteristics constant over time.
Correct : C. Hall effect
18. The space segment consists of_ _ _ _ _ satellites nominally orbiting the earth in MEO (Medium Earth Orbit).
Correct : D. 24
19. Optical encoders are used to measure _ _ _ _ _
Correct : C. Both angular and linear positions
20. The __ ____ ____ is a space-based satellite navigation system that provides
location and time information in all weather conditions, anywhere on or near the Earth
Correct : C. GPS
21. _ _ _ _ _ _elements offer excellent temperature stability and high power
dissipation abilities.
Correct : A. Wire wound
22. The output voltage is measured which is proportional to the distance travelled by
the _ _ _ _ _
Correct : A. Wiper/Jockey
23. By using Rotating Polygon as scanner in Lidar what type of ground pattern it
will form ______
Correct : C. Parallel
24. The distance sensing method of radio beacon range from _ _ _ _ _
Correct : A. 1M to 100 M
25. Laser is used in LIDAR for what purpose?
Correct : B. Range finder
26. A ________ is thermally sensitive resistor that exhibits a large change in
resistance.
Correct : A. Thermistor
27. ________ measures temperature by correlating the resistance of the RTD with
temperature.
Correct : B. Resistance Thermometer
28. ________ consists of two different metals connected at two points.
Correct : C. Thermocouple
29. Which type of temperature sensor is placed in Integrated Circuits?
Correct : D. Semiconductor based sensor
30. Which sensor is linear and low accuracy?
Correct : D. Semiconductor based sensor
31. Piezoelectric transducer is used for measuring __________
Correct : A. non-electrical quantities
32. Piezoelectricity means _________________
Correct : C. Pressure electricity
33. What is the full form of LASER?
Correct : C. Light Amplification by Stimulated Emission of Radiations
34. In Stimulated Absorption, what is the lifetime of atoms ground state?
Correct : D. Infinity
35. Which characteristic of LASER allows it to be used in holography?
Correct : A. Coherency
36. Which of the following can be used for the generation of laser pulse?
Correct : D. Nd- YAG laser
37. Point out the wrong statement.
Correct : B. MEMS as a class can be between 1000 and 100000 micrometers in size
38. Which of the following is not a configuration of a smart sensor?
Correct : D. None of the mentioned
39. Input signal to smart sensor is fed from _____________
Correct : B. Transducer
40. Signal conditioning is carried out in ______________
Correct : A. Transducer housing
41. Output of smart sensors will of ________________
Correct : B. Digital
42. Which of the following defines smartness of sensor?
Correct : A. Quality of data
43. Input data of smart sensor will be _____________
Correct : A. Analog
44. LDR’s are also called _______________
Correct : B. Photo resistive cell
45. Which of the following is not correct for fibre optic sensors?
Correct : D. None of the mentioned
46. Epoxy material in fibre optics is intended for ________________
Correct : C. Better sealing
47. Optical fiber sensors are electrically ____________
Correct : B. passive
48. Optical fibers are not immune to ________
Correct : C. ambient light interference
49. In which of the following optic fiber sensor the fiber is simply used to carry light
to and from an external optical device where the sensing takes place?
Correct : A. extrinsic fiber optic sensor
50. Other name for tactile sensor is______________
Correct : C. Touch sensor
51. Which sensor is used in mobile phones?
Correct : A. Capacitive touch sensor
52. The nano particles from iron and palladium are used to produce ________
Correct : D. Magnetic storage devices
53. Nano particles target the rare _______ causing cells and remove them from
blood.
Correct : A. Tumour
54. ___________ is the field in which the nano particles are used with silica coated
iron oxide iron oxide.
Correct : C. Medical diagnosis
55. In which of the following categories be thin plate diaphragm included?
Correct : A. Primary transducer
56. Which of the following applications are suited for thin plate diaphragms?
Correct : D. Both static and dynamic pressure with small frequency
57. Which of the following devices convert pressure to displacement?
Correct : D. Both diaphragm and capsule
58. Resistance temperature detector is ___________
Correct : A. a electrical tranducer
59. Relation between temperature and resistance of a conductor is ________
Correct : B. Rt = Rref [1+α∆t]
60. Sensing element in the thermometer must provide ________
Correct : C. large change in resistance
61. Resistive transducers are ______________
Correct : C. Either primary or secondary
62. Which of the following can be used to measure using thermistors?
Correct : B. In-between 100Ω and 1MΩ
63. Which of the following is correct for thermistors?
Correct : B. Negative temperature coefficient of resistance
64. Thermocouple is a ______________
Correct : A. Primary device
65. Operation of thermocouple is governed by _______________
Correct : D. All of the mentioned
66. ______________ describes current flow between two junctions formed by two
different metals.
Correct : A. Peltier effect
67. Amount of heat liberated or absorbed when 1A current passes is called
____________
Correct : B. Peltier coefficient
68. Thermo couple cannot be used to measure ____________
Correct : D. None of the mentioned
69. Photoconductive transducers produce output ________
Correct : C. due to change in resistance
70. Which of the following is correct for a level to force conversions?
Correct : A. Liquid at constant density distribution
71. Which devices measures gases or liquid?
Correct : B. Pressure sensor
72. Diaphragms in a pressure sensor are of ________
Correct : A. 2 types
73. Thermocouples consist of a pair of wires made of dissimilar metals joined together at one or more junctions that generate a voltage when subjected to a temperature gradient . This phenomenon is known as the _________
Correct : A. Seebeck effect
74. What is the name of the question mark area?
Correct : A. Measuring junction
75. Signal conditioner is used for _________
Correct : D. boosting the voltage
76. A multiplexer is used for _________
Correct : A. accepting multiple inputs
77. The time required to complete the conversion of Analog to Digital is ________
the duration of the hold mode of S/H.
Correct : C. Less than
78. In A/D converter, what is the time relation between sampling period T and the
duration of the sample mode and the hold mode?
Correct : A. Should be larger than the duration of sample mode and hold mode
79. During which period the op-amps output of sample and hold circuits is
processed?
Correct : D. Hold period
80. Sample and hold circuit are used in
Correct : D. All of the mentioned
81. The opamp in the Inverting circuit is in __________
Correct : A. Linear region
82. In an Inverting Amplifier circuit, the output voltage vo is expressed as a function
of ____________
Correct : C. Source voltage
83. In the non-inverting configuration of operational amplifier
Correct : C. The positive terminal is connected to the power source
84. For ideal non-inverting operational amplifier
Correct : B. Input resistance is infinite and output resistance is zero
85. Which is the best example of a single channel data acquisition system?
Correct : D. DPM
86. Which technique is most widely used in the single channel data acquisition
system?
Correct : C. Successive approximation
87. Multichannel data acquisition system has __________
Correct : A. multiple channels
88. Multichannel Analog Multiplexed System is __________
Correct : C. slow
89. Multichannel Analog Multiplexed System utilises time __________
Correct : D. using a mux
90. In a Multichannel Analog Multiplexed System __________
Correct : A. A/D converter is used
91. Many channels can be monitored at the same time by __________
Correct : C. Multiplexing
92. What is the region after the stop band frequency in the magnitude frequency
response of a low pass filter?
Correct : A. Stop band
93. Which of the following is not correct for data loggers?
Correct : B. Battery less
94. Which of the following devices are similar to electronic data loggers?
Correct : A. Chart recorders
95. Which of the following statement is false?
Correct : B. All data acquisition systems are data loggers
96. Data logger system have _______________
Correct : A. Slow sampling rate
97. Which of the following is correct for data loggers?
Correct : D. All of the mentioned
98. Data logger deals with __________________
Correct : A. Digital signals
99. What is a multiplexer?
Correct : B. A multiplexer is a device which converts many signals into one
100. How many control lines are present in analog to digital converter in addition to
reference voltage?