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
2 Sensor is a type of transducer?
- (A) TRUE
- (B) FALSE
3 Thermocouple generate output voltage according to ____________
- (A) Circuit Parameters
- (B) Humidity
- (C) Temperature
- (D) Voltage
4 Transducer converts energy from ………………..
- (A) Physical to electrical form
- (B) Do not convert energy
- (C) Electrical to physical form
- (D) All the above
5 Which of the following is part of instrumentation system
- (A) Sensor
- (B) Transducer
- (C) Signal Conditioning
- (D) All the above
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
7 Which of the following is analog transducer
- (A) LVDT
- (B) Piezo electric Transducer
- (C) Rotary Encoder
- (D) All the above
8 Bourdon tube is example of….
- (A) Electrical Transducer
- (B) Mechanical Transducer
- (C) Digital Transducer
- (D) Active Transducer
9 LVDT can be used for measurement of
- (A) Temperature
- (B) Displacement
- (C) Humidity
- (D) Flow
10 Which of the following is selection criteria for transducer
- (A) Sensitivity
- (B) Operating Range
- (C) Frequency Response
- (D) All the above
11 Which of the following is Elastic Pressure Transducer
- (A) Bourdon tube
- (B) Diaphragm
- (C) Capsule Element
- (D) All of the above
12 Reynolds Number for Laminar flow is…
- (A) Less than 2000
- (B) Greater than 4000
- (C) Equal to 2000
- (D) Equal to 4000
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
14 Venturi meter is used for measurement of
- (A) Temperature
- (B) Pressure
- (C) Flow
- (D) Displacement
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
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
17 Which of the following is not temperature scale
- (A) Fahrenheit
- (B) Centigrade
- (C) Kelvin
- (D) Ramting
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
19 For turbulent flow Reynolds number is
- (A) >2000
- (B) <2000
- (C) >4000
- (D) 2000
20 Thermocouple works on principle of
- (A) Seebeck effect
- (B) Peltier effect
- (C) Maxwell effect
- (D) Flemings left hand rule
21 Unit of level in (level measurement) is
- (A) meter
- (B) kilo
- (C) gram
- (D) meter/second
22 which of the following temperature transducer is made up of semiconductor
- (A) Thermistor
- (B) Thermocouple
- (C) Pyrometer
- (D) RTD
23 Long form of RTD is
- (A) Resistance Temperature Detector
- (B) Resistance Temperature Dependance
- (C) Regular Temperature Detector
- (D) Reusable Temperature Detector
24 Temperature of body is usually measured in
- (A) Fahrenheit
- (B) Centigrade
- (C) Kelvin
- (D) Rankin
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
26 Which of the following is standard unit of length?
- (A) Inch
- (B) Meter
- (C) Kilometer
- (D) Centimeter
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
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
29 What are the different types of measurement?
- (A) Direct Measurement
- (B) Indirect Measurement
- (C) Both
- (D) None of the above
30 Which of the following is not static characteristics of instrument?
- (A) Accuracy
- (B) Precision
- (C) Sensitivity
- (D) Overshoot
31 Which of the following is dynamic characteristics of instrument?
- (A) Overshoot
- (B) Speed of response
- (C) Fidelity
- (D) All the above
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
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
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
35 Which of the following is type of error?
- (A) Gross Error
- (B) Systematic Error
- (C) Random Error
- (D) All of the above
36 Which of the following is systematic error?
- (A) Random Error
- (B) Climatic Error
- (C) Observational error
- (D) Universal error
37 Source of Random error is
- (A) Instrument power supply
- (B) Temperature change
- (C) Unknown reasons
- (D) Global warming
38 Parallax error is an example of…
- (A) Instrumental error
- (B) Observational error
- (C) Random error
- (D) Gaussian error
39 Different measurement standards are
- (A) International standard
- (B) Primary standard
- (C) Secondary standard
- (D) All the above
40 Secondary standards are used in
- (A) Industrial Measurement
- (B) Local measurement
- (C) International Easement
- (D) None of the above
41 What are the different standards considered for calibration?
- (A) Accuracy Required
- (B) Sensitivity required
- (C) Range of instrument
- (D) All of the above
42 Which of the following instrument has highest Accuracy?
- (A) Analog instrument
- (B) Digital Instrument
- (C) Both
- (D) None of the above
43 Which is following instrument?
- (A) PMMC Instrument
- (B) Deflection type instrument
- (C) Dynamo meter type instrument
- (D) Moving iron type instrument
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
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
46 Which of the following is type of moving iron instrument?
- (A) Attraction type
- (B) Repulsion type
- (C) Both
- (D) None of the above
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
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
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
50 What is disadvantage of PMMC meter
- (A) It is costly
- (B) Delicate construction
- (C) Hysteresis error
- (D) All of the above