1. Where and when was the word Mechatronics invented?
Correct : A. japan(1960)
2. What is the function of an input signal conditioning unit?
Correct : B. to amplify the signal and convert it into digital form
3. The main mechanical components of a servo motor are stator and rotor.
Correct : A. true
4. Example of ‘Stand-alonesystem’ is
Correct : B. washing machine
5. Which among the following carry out the overall control of a system?
Correct : D. digital controls
6. A humanoid robot is an example of
Correct : A. artificial intelligence
7. Where is the feedback generated by sensors in a mechatronics system given?
Correct : B. comparators
8. A Mechatronics system contains feedback.
Correct : A. true
9. Which error is also termed as measurement error?
Correct : B. dynamic errors
10. In retardation type measuring lag the instrument responds after an unspecified dead time lag.
Correct : B. false
11. Active transducers do not require power source for operation.
Correct : A. true
12. Which among the following transducer is an example of active transducer?
Correct : D. photovoltaic cell
13. Which among the following transducer is an example of passive transducer?
Correct : C. strain gauge
14. Fidelity is a static characteristic.
Correct : B. false
15. Measuring lag is a dynamic characteristic.
Correct : A. true
16. In time delay type measuring lag the instrument responds immediately as soon as the input is altered.
Correct : B. false
17. Which instrument can be used to measure time without any errors?
Correct : C. atomic clock
18. Which method can reduce dynamic error?
Correct : D. by reducing time lag
19. Which among the following is not a dynamic characteristic?
Correct : A. precession
20. Which among the following is not a dynamic characteristic?
Correct : B. accuracy
21. Which method can reduce dynamic error?
Correct : D. by increasing speed of response
22. Which among the following transducer is an example of passive transducer?
Correct : D. thermistor
23. Which among the following transducer is an example of active transducer?
Correct : B. thermocouple
24. Standardization of potentiometer is used for
Correct : C. use of low voltage sources
25. Which of the following device is used for calibration of a potentiometer?
Correct : A. electrochemical cell
26. Galvanometer used should be calibrated first.
Correct : B. false
27. Which of the following cannot be measured using potentiometer?
Correct : D. none of the mentioned
28. Which of the following is not possible?
Correct : D. none of the mentioned
29. Galvanometer is used for
Correct : B. indication of null position
30. Power consumption of unknown source connected will be
Correct : C. zero ideally
31. A potentiometer cannot be used for calibration of ammeter.
Correct : B. false
32. Which of the following devices cannot be used potentiometer as calibrating device?
Correct : D. all of the mentioned
33. At null position, galvanometer reading will be
Correct : B. zero
34. Which of the following is not a characteristic of an ideal transducer?
Correct : B. low linearity
35. A transducer converting ground movement or velocity to voltage is known as
Correct : A. geophone
36. Which of the following represent active transducer?
Correct : D. thermocouple
37. What is the relation between scale factor and sensitivity of a transducer?
Correct : B. scale factor is inverse of sensitivity
38. Which of the following is an analog transducer?
Correct : B. strain gauge
39. What is the principle of operation of LVDT?
Correct : A. mutual inductance
40. Capacitive transducer is used for?
Correct : B. dynamic measurement
41. Which of the following is used in photo conductive cell?
Correct : A. selenium
42. Which of the following can be measured using Piezo-electric transducer?
Correct : A. c = a∈⁄d
43. A capacitive transducer works on the principle of
Correct : B. capacitance
44. Capacitance can be varied in
Correct : D. 4 ways
45. Capacitive pressure transducer uses distance of separation for sensing the capacitance.
Correct : A. true
46. Capacitive transducer displays
Correct : B. non-linear behaviour
47. Frequency response of capacitive transducers is
Correct : C. low
48. What is the relation between capacitance and output impedance?
Correct : D. inversely proportional
49. What is the relation between capacitance and input impedance?
Correct : A. directly proportional
50. Composite capacitance consists of
Correct : B. more than one dielectric medium
51. Electrical strain gauge works on the principle of
Correct : A. variation of resistance
52. The strain gauge is not bonded to the specimen.
Correct : B. false
53. Bonding element in a strain gauge must have
Correct : C. high insulation resistance
54. Commonly used elements for wire strain gauges are
Correct : A. nickel and copper
55. Cement is classified under
Correct : B. 2 types
56. Proper functioning of a strain gauge depends on
Correct : C. bonding
57. Proper bonding causes errors in strain gauges.
Correct : B. false
58. What principle defines eddy current inspection (ECI)?
Correct : C. electromagnetic induction principle
59. ECI is generally restricted to a depth below
Correct : D. 6mm
60. What is the reason for the limitation of depth below 6mm in ECI?
Correct : C. skin effect
61. The total resistance of the coil of ECI is known as
Correct : A. impedance
62. ECI is only used for ferromagnetic materials.
Correct : B. false
63. Standard penetration depth varies from material to material.
Correct : A. true
64. What is acoustic impedance (in MPa s/m) of aluminum?
Correct : C. 16.77
65. Which of the following is the poorest transmitter of sound?
Correct : C. air
66. Which of the following is the best transmitter of sound?
Correct : C. steel
67. What is the drawback of ultrasonic testing?
Correct : B. high sensitivity
68. What is a type of piezoelectric crystal?
Correct : A. natural
69. The object under inspection must have parallel surfaces.
Correct : A. true
70. Ultrasonic testing is destructive testing?
Correct : B. false
71. Hall Effect is a/an
Correct : C. galvanic
72. Which of the following represents the correct expression of Lorentz force?
Correct : B. eeh/b
73. Hall potential is inversely proportional to magnetic flux density.
Correct : B. false
74. Hall Effect is clearly visible in
Correct : B. semiconductors
75. Force exerted by magnetic field in Hall Effect transducers is
Correct : A. lorentz force
76. Which of the following represents correct expression for Lorentz force?
Correct : A. bev
77. Which of the following represents the output of Hall Effect transducer?
Correct : A. hall potential
78. Hall Effect transducers attain equilibrium instantaneously.
Correct : B. false
79. Hall Effect transducer can be used to measure
Correct : D. all of the mentioned
80. What is ESP8266?
Correct : A. wifi module
81. which sensor is LM35?
Correct : C. temperature sensor
82. How many pins does temperature sensor have?
Correct : D. 3 legs
83. Monnit temperature sensor is used for what?
Correct : A. accurate results
84. Which of the following is the Wireless battery-free sensor?
Correct : B. rfm3200
85. Which sensor is used for monitor electric distribution and switching equipment temperature?
Correct : D. rfm3200
86. Electric motor protection has which sensor?
Correct : C. temperature sensor
87. What is DS18B20?
Correct : D. temperature sensor
88. What is STSC1?
Correct : B. temperature sensor
89. Line of sight of wireless sensor tag is
Correct : B. 700ft
90. A is thermally sensitive resistor that exhibits a large change in resistance.
Correct : A. thermistor
91. measures temperature by correlating the resistance of the RTD with temperature.
Correct : B. resistance thermometer
92. consists of two different metals connected at two points.
Correct : C. thermocouple
93. Which type of temperature sensor is placed in Integrated Circuits?
Correct : D. semiconductor based sensor
94. Which sensor is linear and low accuracy?
Correct : D. semiconductor based sensor
95. Optical fiber sensors are electrically
Correct : B. passive
96. Optical fibers are not immune to
Correct : C. ambient light interference
97. Optical fiber sensors are not immune to electromagnetic disturbances.
Correct : B. false
98. 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
99. On the bases of application of optic fiber sensor, which of the following is not considered to be the classification of fiber optic sensor?
Correct : C. thermal sensors
100. The type of sensor that detects the analyte species directly through their characteristic spectral properties is called