Electronic Measurement & Instrumentation

Multiple Choice Questions

1   Change in output of sensor with change in input is called as ____________
    (A)   Threshold
    (B)   Sensitivity
    (C)   Slew Rate
    (D)   None of the above
[showhide type=”button7c1″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: B [/showhide]
2   Sensor is a type of transducer?
    (A)   TRUE
    (B)   FALSE
[showhide type=”button7c2″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
3   Thermocouple generate output voltage according to ____________
    (A)   Circuit Parameters
    (B)   Humidity
    (C)   Temperature
    (D)   Voltage
[showhide type=”button7c3″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
4   Transducer converts energy from ………………..
    (A)   Physical to electrical form
    (B)   Do not convert energy
    (C)   Electrical to physical form
    (D)   All the above
[showhide type=”button7c4″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
5   Which of the following is part of instrumentation system
    (A)   Sensor
    (B)   Transducer
    (C)   Signal Conditioning
    (D)   All the above
[showhide type=”button7c5″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
6   Active transducer requires…
    (A)   External Power supply
    (B)   Solar panel to get power
    (C)   Does not require power supply
    (D)   None of the above
[showhide type=”button7c6″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
7   Which of the following is analog transducer
    (A)   LVDT
    (B)   Piezo electric Transducer
    (C)   Rotary Encoder
    (D)   All the above
[showhide type=”button7c7″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
8   Bourdon tube is example of….
    (A)   Electrical Transducer
    (B)   Mechanical Transducer
    (C)   Digital Transducer
    (D)   Active Transducer
[showhide type=”button7c8″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: B [/showhide]
9   LVDT can be used for measurement of
    (A)   Temperature
    (B)   Displacement
    (C)   Humidity
    (D)   Flow
[showhide type=”button7c9″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: B [/showhide]
10   Which of the following is selection criteria for transducer
    (A)   Sensitivity
    (B)   Operating Range
    (C)   Frequency Response
    (D)   All the above
[showhide type=”button7c10″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
11   Which of the following is Elastic Pressure Transducer
    (A)   Bourdon tube
    (B)   Diaphragm
    (C)   Capsule Element
    (D)   All of the above
[showhide type=”button7c11″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
12   Reynolds Number for Laminar flow is…
    (A)   Less than 2000
    (B)   Greater than 4000
    (C)   Equal to 2000
    (D)   Equal to 4000
[showhide type=”button7c12″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
13   In turbulent flow….
    (A)   Particles of fluid moves in disorderly fashion
    (B)   Particles of fluid moves in orderly fashion
    (C)   Particles remain stationary
    (D)   None of the above
[showhide type=”button7c13″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
14   Venturi meter is used for measurement of
    (A)   Temperature
    (B)   Pressure
    (C)   Flow
    (D)   Displacement
[showhide type=”button7c14″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
15   Hook type instrument is used measurement of
    (A)   Flow of liquid
    (B)   Temperature of liquid
    (C)   Level of liquid
    (D)   None of the above
[showhide type=”button7c15″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
16   Which of the following mechanism is used for level measurement
    (A)   Radar Level Measurement
    (B)   Ultrasonic Level Measurement
    (C)   Radiation Level Measurement
    (D)   All the above
[showhide type=”button7c16″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
17   Which of the following is not temperature scale
    (A)   Fahrenheit
    (B)   Centigrade
    (C)   Kelvin
    (D)   Ramting
[showhide type=”button7c17″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
18   In case of NTC type thermistor
    (A)   Resistance increases with temp
    (B)   Resistance decreases with temp
    (C)   Resistance remains unchanged
    (D)   Inductance decreases with temp
[showhide type=”button7c18″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: B [/showhide]
19   For turbulent flow Reynolds number is
    (A)   >2000
    (B)   <2000
    (C)   >4000
    (D)   2000
[showhide type=”button7c19″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
20   Thermocouple works on principle of
    (A)   Seebeck effect
    (B)   Peltier effect
    (C)   Maxwell effect
    (D)   Flemings left hand rule
[showhide type=”button7c20″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
21   Unit of level in (level measurement) is
    (A)   meter
    (B)   kilo
    (C)   gram
    (D)   meter/second
[showhide type=”button7c21″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
22   which of the following temperature transducer is made up of semiconductor
    (A)   Thermistor
    (B)   Thermocouple
    (C)   Pyrometer
    (D)   RTD
[showhide type=”button7c22″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
23   Long form of RTD is
    (A)   Resistance Temperature Detector
    (B)   Resistance Temperature Dependance
    (C)   Regular Temperature Detector
    (D)   Reusable Temperature Detector
[showhide type=”button7c23″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
24   Temperature of body is usually measured in
    (A)   Fahrenheit
    (B)   Centigrade
    (C)   Kelvin
    (D)   Rankin
[showhide type=”button7c24″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
25   If temperature of body in Fahrenheit is 50, what is temperature of body in Centigrade
    (A)   10 degrees Centigrade
    (B)   20 degrees Centigrade
    (C)   9.5 degree Centigrade
    (D)   11 degrees Centigrade
[showhide type=”button7c25″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
26   Which of the following is standard unit of length?
    (A)   Inch
    (B)   Meter
    (C)   Kilometer
    (D)   Centimeter
[showhide type=”button7c26″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: B [/showhide]
27   Resolution of an instrument is
    (A)   The maximum quantity it can measure
    (B)   The maximum non-linearity
    (C)   The minimum quantity it can measure
    (D)   Ability to distinguish polarity
[showhide type=”button7c27″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
28   In direct measurement method
    (A)   Quantity to measured is compared with standard
    (B)   Quantity to measured is compared with local unit
    (C)   Quantity to measured is compared with international standard
    (D)   None of the above
[showhide type=”button7c28″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
29   What are the different types of measurement?
    (A)   Direct Measurement
    (B)   Indirect Measurement
    (C)   Both
    (D)   None of the above
[showhide type=”button7c29″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
30   Which of the following is not static characteristics of instrument?
    (A)   Accuracy
    (B)   Precision
    (C)   Sensitivity
    (D)   Overshoot
[showhide type=”button7c30″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
31   Which of the following is dynamic characteristics of instrument?
    (A)   Overshoot
    (B)   Speed of response
    (C)   Fidelity
    (D)   All the above
[showhide type=”button8c1″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
32   Sensitivity of instrument is
    (A)   How quickly instrument responds
    (B)   How slowly instrument responds
    (C)   Not related with instrument response
    (D)   How quickly it generates error
[showhide type=”button8c2″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
33   Process of calibration is
    (A)   Comparison of measured value with standard
    (B)   Comparison of standard value with measured
    (C)   Comparison of true value with false value
    (D)   None of the above
[showhide type=”button8c3″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
34   Error can be defined as…
    (A)   Difference between actual value and measured value
    (B)   Difference between actual and internal standard value
    (C)   It is some garbage value
    (D)   It is constant value which makes output wrong
[showhide type=”button8c4″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
35   Which of the following is type of error?
    (A)   Gross Error
    (B)   Systematic Error
    (C)   Random Error
    (D)   All of the above
[showhide type=”button8c5″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
36   Which of the following is systematic error?
    (A)   Random Error
    (B)   Climatic Error
    (C)   Observational error
    (D)   Universal error
[showhide type=”button8c6″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
37   Source of Random error is
    (A)   Instrument power supply
    (B)   Temperature change
    (C)   Unknown reasons
    (D)   Global warming
[showhide type=”button8c7″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
38   Parallax error is an example of…
    (A)   Instrumental error
    (B)   Observational error
    (C)   Random error
    (D)   Gaussian error
[showhide type=”button8c8″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: B [/showhide]
39   Different measurement standards are
    (A)   International standard
    (B)   Primary standard
    (C)   Secondary standard
    (D)   All the above
[showhide type=”button8c9″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
40   Secondary standards are used in
    (A)   Industrial Measurement
    (B)   Local measurement
    (C)   International Easement
    (D)   None of the above
[showhide type=”button8c10″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
41   What are the different standards considered for calibration?
    (A)   Accuracy Required
    (B)   Sensitivity required
    (C)   Range of instrument
    (D)   All of the above
[showhide type=”button8c11″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]
42   Which of the following instrument has highest Accuracy?
    (A)   Analog instrument
    (B)   Digital Instrument
    (C)   Both
    (D)   None of the above
[showhide type=”button8c12″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: B [/showhide]
43   Which is following instrument?

    (A)   PMMC Instrument
    (B)   Deflection type instrument
    (C)   Dynamo meter type instrument
    (D)   Moving iron type instrument
[showhide type=”button8c13″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
44   Long form of PMMC meter is
    (A)   Permanent Magnet Moving Coil Instrument
    (B)   Permanent Magnet Mode Coil Instrument
    (C)   Permanent Moving Magnetic Coil Instrument
    (D)   None of the above
[showhide type=”button8c14″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
45   PMMC instrument works on principle of
    (A)   Fleming Left Hand Rule
    (B)   Fleming Right Hand Rule
    (C)   Thumb Rule
    (D)   None of the above
[showhide type=”button8c15″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
46   Which of the following is type of moving iron instrument?
    (A)   Attraction type
    (B)   Repulsion type
    (C)   Both
    (D)   None of the above
[showhide type=”button8c16″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
47   Which of the following meter is costly?
    (A)   PMMC meter
    (B)   Moving iron meter
    (C)   Dynamo meter type meter
    (D)   All are cheap instrument
[showhide type=”button8c17″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
48   Voltmeter, Ammeter, Watt meter measures which of the following quantity
    (A)   Power, Voltage, Current
    (B)   Current, Power, Voltage
    (C)   Voltage, Current, Power
    (D)   Voltage, Power, Current
[showhide type=”button8c18″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: C [/showhide]
49   Which of the following instrument uses Permanent Magnet?
    (A)   PMMC Instrument
    (B)   Moving Iron Instrument
    (C)   Dynamometer type Instrument
    (D)   None of the above
[showhide type=”button8c19″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: A [/showhide]
50   What is disadvantage of PMMC meter
    (A)   It is costly
    (B)   Delicate construction
    (C)   Hysteresis error
    (D)   All of the above
[showhide type=”button8c20″ more_text=”Show Answer” less_text=”Hide Answer”] Answer: Option: D [/showhide]

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