MCQOPTIONS
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MCQOPTIONS
This section includes 186 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Measurements knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Strain gauge is an example of _ _ _ _ _ sensors |
| A. | Modulating sensor |
| B. | Direct sensor |
| C. | Self generating sensors |
| D. | None of the above |
| Answer» B. Direct sensor | |
| 2. |
________ measures temperature by correlating the resistance of the RTD withtemperature. |
| A. | Thermistor |
| B. | Resistance Thermometer |
| C. | Thermo couple |
| D. | Semiconductor based sensor |
| Answer» C. Thermo couple | |
| 3. |
Electronic recorders are of __________ |
| A. | 2 types |
| B. | 4 types |
| C. | 10 types |
| D. | 15 types |
| Answer» B. 4 types | |
| 4. |
Forklift uses _ _ _ _ _ _ sensor |
| A. | Potentiometer |
| B. | Encoder |
| C. | Synchros |
| D. | Resolver |
| Answer» B. Encoder | |
| 5. |
Synchro is a rotating device that operates on the same principle as a _ _ _ _ _ _and produces a set of voltages, correlated to angular position. |
| A. | Transformer principle |
| B. | Faradays principle |
| C. | Lens law |
| D. | Tesla principle |
| Answer» B. Faradays principle | |
| 6. |
_________ Load cell are sometimes used where intrinsic safety and hygiene aredesired. |
| A. | Hydraulic |
| B. | Pneumatic |
| C. | Capacitance |
| D. | Strain gauge |
| Answer» C. Capacitance | |
| 7. |
Digital acquisition systems are used when _________ |
| A. | bandwidth is high |
| B. | bandwidth is medium |
| C. | bandwidth is zero |
| D. | bandwidth is low |
| Answer» E. | |
| 8. |
In Hall Effect sensor, the magnitude of the voltage generated depends on the _ _ _ _ _. |
| A. | Strength of the magnetic field |
| B. | Strength of the current |
| C. | Property of the conductor |
| D. | All the above |
| Answer» E. | |
| 9. |
Bonded type strain gauge depends upon____ |
| A. | Filament construction |
| B. | Material of the filament wire |
| C. | Cement used to bond the filament to the carrier |
| D. | All the above |
| Answer» E. | |
| 10. |
Which transducer is known as ‘self-generating transducer’? |
| A. | Active transducer |
| B. | Passive transducer |
| C. | Secondary transducer |
| D. | Analog transducer |
| Answer» B. Passive transducer | |
| 11. |
The data acquisition system implies input data collection __________ |
| A. | in mixed signal form |
| B. | in analog form |
| C. | in digital form |
| D. | in the form of binary codes |
| Answer» D. in the form of binary codes | |
| 12. |
To obtain the GMR effect, the spacer layers must be ____________ |
| A. | Thick |
| B. | Thin |
| C. | Both a) and b) |
| D. | None of the above |
| Answer» C. Both a) and b) | |
| 13. |
Which of the following can be used for the generation of laser pulse? |
| A. | Ruby laser |
| B. | Carbon dioxide laser |
| C. | Helium neon laser |
| D. | Nd- YAG laser |
| Answer» E. | |
| 14. |
Which of the following devices convert pressure to displacement? |
| A. | Diaphragm |
| B. | Bellow |
| C. | Capsule |
| D. | Both diaphragm and capsule |
| Answer» E. | |
| 15. |
Identify the picture and tell what type of sensor technology is used |
| A. | Radio beacon |
| B. | Bluetooth |
| C. | GPS |
| D. | All the above |
| Answer» C. GPS | |
| 16. |
The __ ____ ____ is a space-based satellite navigation system that provideslocation and time information in all weather conditions, anywhere on or near the Earth |
| A. | Radio beacon |
| B. | Gyroscope |
| C. | GPS |
| D. | Accelerometer |
| Answer» D. Accelerometer | |
| 17. |
In optical encoder, the inner track has just one hole which is used locate the ‘_ __ _of the disc. |
| A. | Anti Clockwise direction of the rotation |
| B. | Home position |
| C. | Clockwise direction of the rotation |
| D. | Both a) and c) |
| Answer» C. Clockwise direction of the rotation | |
| 18. |
Applications of Lidar _ _ _ _ _ |
| A. | Ocenography |
| B. | Agriculture |
| C. | Terrain model |
| D. | All the above |
| Answer» E. | |
| 19. |
The Hall Effect sensor is not capable of measuring a current flow at a distancegreater than _ _ _cm |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 10 |
| Answer» E. | |
| 20. |
Gauge factor is given by which of the following relation? |
| A. | S = ΔR/R/Δl |
| B. | S = ΔR/Δl/l |
| C. | S = R/Δl/l |
| D. | S = ΔR/R/Δl/l |
| Answer» E. | |
| 21. |
Laser is used in LIDAR for what purpose? |
| A. | High-Speed Photography |
| B. | Range finder |
| C. | Optical Carrier signal |
| D. | Drilling |
| Answer» C. Optical Carrier signal | |
| 22. |
Load cells are primary transducers. |
| A. | True |
| B. | False |
| C. | none |
| D. | none |
| Answer» B. False | |
| 23. |
__________ load cells dominate the weighing industry. |
| A. | Hydraulic |
| B. | Pneumatic |
| C. | Capacitance |
| D. | Strain gauge |
| Answer» E. | |
| 24. |
In Hall Effect sensor, an electric potential is in third direction which is ________to the other two directions. |
| A. | Parallel |
| B. | Mutually Perpendicular |
| C. | 180 degree phase shift |
| D. | None of the above |
| Answer» C. 180 degree phase shift | |
| 25. |
In GPS, Control segment consists of a master control station and _ _ _ _ othermonitor stations. |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 26. |
_ _ _ _ _ _ _ is a standard for short-range radio communications, originallydeveloped as a cable replacement to connect portable devices |
| A. | Radio beacon |
| B. | Bluetooth |
| C. | GPS |
| D. | All the above |
| Answer» C. GPS | |
| 27. |
Multichannel data acquisition system has __________ |
| A. | multiple channels |
| B. | single channel |
| C. | two channels |
| D. | five channels |
| Answer» B. single channel | |
| 28. |
Piezoelectricity means _________________ |
| A. | Electric polarization |
| B. | Electric dielectric |
| C. | Pressure electricity |
| D. | Polar dielectric |
| Answer» D. Polar dielectric | |
| 29. |
_ _ _ _ _ _elements offer excellent temperature stability and high powerdissipation abilities. |
| A. | Wire wound |
| B. | Conductive plastic |
| C. | Hybrid |
| D. | None of the above |
| Answer» B. Conductive plastic | |
| 30. |
_ _ _ _ __ _, describing the sensor’s life expectancy |
| A. | Static characteristics |
| B. | Dynamic characteristics |
| C. | Environmental characteristics |
| D. | Reliability Characteristics |
| Answer» E. | |
| 31. |
___________, describing the performance with respect to very slow changes. |
| A. | Static characteristics |
| B. | Dynamic characteristics |
| C. | Environmental characteristics |
| D. | Reliability Characteristics |
| Answer» B. Dynamic characteristics | |
| 32. |
Multiplexing after A/D conversion involves _____________ |
| A. | noisy data |
| B. | mixed signal data |
| C. | analog data |
| D. | digital data |
| Answer» E. | |
| 33. |
Data acquisition system is mainly classified into __________ |
| A. | 2 types |
| B. | 4 types |
| C. | 6 types |
| D. | 8 types |
| Answer» B. 4 types | |
| 34. |
To perform the angle measurement a synchro pair is used and they are called as_ _ _ _ |
| A. | Transmitter |
| B. | Receiver |
| C. | Transmitter and control transformer |
| D. | None of the above |
| Answer» D. None of the above | |
| 35. |
_ _ _ _ _ _ is the departure of a given reading from the arithmetic mean of agroup of readings. |
| A. | Mean |
| B. | Median |
| C. | Mode |
| D. | deviation |
| Answer» E. | |
| 36. |
During which period the op-amps output of sample and hold circuits isprocessed? |
| A. | Delay period |
| B. | Sample and hold period |
| C. | Sample period |
| D. | Hold period |
| Answer» E. | |
| 37. |
The time required to complete the conversion of Analog to Digital is ________the duration of the hold mode of S/H. |
| A. | Greater than |
| B. | Equals to |
| C. | Less than |
| D. | Greater than or Equals to |
| Answer» D. Greater than or Equals to | |
| 38. |
Strain gauge foils are made up of _________ |
| A. | Copper |
| B. | Nickel |
| C. | Constantan alloy |
| D. | Platinum |
| Answer» D. Platinum | |
| 39. |
In Hall Effect sensor, an electric current is _______ to the direction of themagnetic flux. |
| A. | Parallel |
| B. | Perpendicular |
| C. | 180 degree phase shift |
| D. | None of the above |
| Answer» C. 180 degree phase shift | |
| 40. |
_ _ _ _ _ materials of the wire used in potentiometric sensors |
| A. | Gold |
| B. | Silver |
| C. | Platinum |
| D. | Copper |
| Answer» E. | |
| 41. |
_ _ _ _ _ __ parameters on which sensor classified? |
| A. | Material and technology |
| B. | Application |
| C. | Property and input quantity |
| D. | All the above |
| Answer» E. | |
| 42. |
The most common techniques for noise reduction are differential signaltransmission and passive low pass _ _ _ _ |
| A. | Filtration |
| B. | Amplifier |
| C. | Relay |
| D. | All the above |
| Answer» B. Amplifier | |
| 43. |
_ _ _ _ _used where rotational or angular displacements are to be measured |
| A. | LVDT |
| B. | RVDT |
| C. | Hall effect |
| D. | Load cell |
| Answer» C. Hall effect | |
| 44. |
A _ _ _ _ _ _, is a measurement device that uses gravity to measure theinclination of an object. |
| A. | Inclinometer |
| B. | Strain gauge |
| C. | Magentoresistance |
| D. | Gyroscope |
| Answer» B. Strain gauge | |
| 45. |
_ _ _ _ _ Jockey /wiper materials used in potentiometric sensors |
| A. | Chromium |
| B. | Nickel |
| C. | Platinum |
| D. | Copper |
| Answer» D. Copper | |
| 46. |
Amount of heat liberated or absorbed when 1A current passes is called____________ |
| A. | Thomson coefficient |
| B. | Peltier coefficient |
| C. | Seebeck coefficient |
| D. | None of the mentioned |
| Answer» C. Seebeck coefficient | |
| 47. |
_ _ _ _ _ is the value which occurs most frequently in a set of observations andaround which other items of the set cluster densely |
| A. | Mean |
| B. | Median |
| C. | Mode |
| D. | Variance |
| Answer» D. Variance | |
| 48. |
_ _ _ _ _ _ is a popular technique for transmitting digital data in embeddedsystems. |
| A. | Analog voltage |
| B. | PWM |
| C. | Serial digital |
| D. | All the above |
| Answer» C. Serial digital | |
| 49. |
An _ _ _ _ _ _ is an electromechanical device used to measure acceleration forcessuch as static or dynamic |
| A. | Synchros |
| B. | Resolver |
| C. | LVDT |
| D. | Microsyn |
| Answer» C. LVDT | |
| 50. |
Which of the following is correct for a level to force conversions? |
| A. | Liquid at constant density distribution |
| B. | Liquid with different density distribution |
| C. | Level difference should be gradual |
| D. | Liquid should be highly viscous |
| Answer» B. Liquid with different density distribution | |