Revision Unit 4 - Measurement & Control System.pptx

For 1st year

1. KME201T MCQs UNIT 4 Measurement AND CONTROL SYSTEM

2. Q.1. A________is an act of assigning value to a physical_________. A. Measurment , value   b. measurement, variable c. mesarment , variable d. measurement, value

3. A.1 A ________ is an act of assigning value to a physical _________. A. Measurment , value   b. measurement, variable c. mesarment , variable d. measurement, value

4. Q.2 A properly prepared calibration correction curve gives information about the absolute static errors of the measuring device, the extent of the instrument’s _________ or conformity, and the hysteresis and ___________ of the instrument. A. Linearity, repeatability   b. Repeatability, linearity c. Accuracy, precision d. None of the above

5. A.2 A properly prepared calibration correction curve gives information about the absolute static errors of the measuring device, the extent of the instrument’s _________ or conformity, and the hysteresis and ___________ of the instrument. A. Linearity, repeatability   b. Repeatability, linearity c. Accuracy, precision d. None of the above

6. Q.3 In an electric tachometer, the tertiary signal is between _____ and _______. It represents _____ converted into ____. A. first translation, observer's eye, length, voltage   b. first translation, observer's eye, length, voltage c. first translation, observer's eye, volatage , length d. second translation, observer's eye, length, voltage

7. A.3 In an electric tachometer, the tertiary signal is between _____ and _______. It represents _____ converted into ____. A. first translation, observer's eye, length, voltage   b. first translation, observer's eye, length, voltage c. first translation, observer's eye, volatage , length d. second translation, observer's eye, length, voltage

8. Q.4 The degree of closeness of the measured value of a certain quantity with its true value is known as A. Accuracy b. Precision c. Standard d. Sensitivity

9. A.4 The degree of closeness of the measured value of a certain quantity with its true value is known as A. Accuracy b. Precision c. Standard d. Sensitivity

10. Q.5 Error of measurement = A. True value – Measured value b. Precision – True value c. Measured value – Precision d. None of the above

11. A.5 Error of measurement = A. True value – Measured value b. Precision – True value c. Measured value – Precision d. None of the above

12. Q.6 To compare an unknown with a standard through a calibrated system is called A. Direct comparison b. Indirect comparison c. both ‘a’ and ‘b’ d. None of the above

13. A.6 To compare an unknown with a standard through a calibrated system is called A. Direct comparison b. Indirect comparison c. both ‘a’ and ‘b’ d. None of the above

14. Q.7 The principle of ‘Interchangeability’ is normally employed for A. Mass production b. Production of identical parts c. Parts within the prescribed limits of sizes d. All of the above

15. A.7 The principle of ‘Interchangeability’ is normally employed for A. Mass production b. Production of identical parts c. Parts within the prescribed limits of sizes d. All of the above

16. Q.8 The amount by which the actual size of a shaft is less than the actual size of mating hole in an assembly A. Clearance b. Interference c. Allowance d. None of the above

17. a.8 The amount by which the actual size of a shaft is less than the actual size of mating hole in an assembly A. Clearance b. Interference c. Allowance d. None of the above

18. Q.9 The amount by which the actual size of a shaft is MORE than the actual size of mating hole in an assembly a. Clearance b. Interference c. Allowance d. None of the above

19. A.9 The amount by which the actual size of a shaft is less than the actual size of mating hole in an assembly a. Clearance b. Interference c. Allowance d. None of the above

20. Q.10 ‘GO’ and ‘NO GO’ gauge is a type of A. plug gauge b. slip gauge c. ring gauge d. limit gauge

21. a.10 ‘GO’ and ‘NO GO’ gauge is a type of A. plug gauge b. slip gauge c. ring gauge d. limit gauge

22. Q.11 Traffic light system is the example of: A. Open-loop system b. Closed-loop system C. Both (a) and (b) d. None of these

23. a.11 Traffic light system is the example of: A. Open-loop system b. Closed-loop system C. Both (a) and (b) d. None of these Explanation: The traffic lamp will glow according to the set timing and sequence and is time-dependent. The sequence and time are controlled by relays that work on the pre-programmed time. It does not depend upon the rush of the road.

24. Q.12 Given figure represents: A. automatic loop B. Open loop c. Closed loop d. None of the above

25. a.12 Given figure represents: A. automatic loop B. Open loop c. Closed loop d. None of the above

26. Q.13 For open control system which of the following statements is incorrect ? A. Less expensive b. Recalibration is not required for maintaining the required quality of the output c. Construction is simple and maintenance easy d. Errors are caused by disturbances

27. a.13 For open control system which of the following statements is incorrect ? A. Less expensive b. Recalibration is not required for maintaining the required quality of the output c. Construction is simple and maintenance easy d. Errors are caused by disturbances

28. Q.14 The instruments used for the measurement of pressure is/are A. Bellows B. Diaphragms C. Fiber optic pressure sensors D. All of these

29. a.14 The instruments used for the measurement of pressure is/are A. Bellows B. Diaphragms C. Fiber optic pressure sensors D. All of these

30. Q.15 Dead weight gauge is used for the measurement of pressure of A. About 1000 bar B. About 2000 bar C. About 5000 bar D. About 7000 bar

31. A.15 Dead weight gauge is used for the measurement of pressure of A. About 1000 bar B. About 2000 bar C. About 5000 bar D. About 7000 bar

32. Q.16 When visual indication of pressure level is required then the instrument generally used is A. Monometers B. Diaphragm sensors C. Bourdon tube D. Resonant wire device

33. A.16 When visual indication of pressure level is required then the instrument generally used is A. Monometers B. Diaphragm sensors C. Bourdon tube D. Resonant wire device

34. Q.17 The devices used for flow obstruction is/are A. Orifice plate B. Venturi tube C. Flow nozzle and dall flow tube D. All of these

35. A.17 The devices used for flow obstruction is/are A. Orifice plate B. Venturi tube C. Flow nozzle and dall flow tube D. All of these

36. Q.18 The instrument which is not suitable for the application in automatic control scheme A. Rotameters B. Pitot static tube C. Rotary piston meter D. Orifice plate

37. A.18 The instrument which is not suitable for the application in automatic control scheme A. Rotameters B. Pitot static tube C. Rotary piston meter D. Orifice plate

38. Q.19 The most rugged temperature sensing element listed here is a/an: a. Thermocouple b. Orifice plate c. Filled bulb d. Resistance thermometer

39. A.19 The most rugged temperature sensing element listed here is a/an: a. Thermocouple b. Orifice plate c. Filled bulb d. Resistance thermometer

40. Q.20 Which of these does not require any external power supply for working? a. Strain gauge transducer b. Piezoelectric crystal c. Hydraulic transducer d. Pneumatic transducer

41. A.20 Which of these does not require any external power supply for working? a. Strain gauge transducer b. Piezoelectric crystal c. Hydraulic transducer d. Pneumatic transducer