Analytical instruments MCQ Quiz Hub

1. Which of the following is correct for a level to force conversions?
Liquid at constant density distribution
Liquid with different density distribution
Level difference should be gradual
Liquid should be highly viscous

2. Which of the following devices are used for a level to force conversion?
Load cell
Membrane
Diaphragm
Voltmeter

3. Diaphragm element is used for a level to pressure conversion.
True
False
all of the above
None of the mentioned

4. In closed container type level measuring system, pressure at top of container is due to ______
Vacuum pressure
Vapor pressure
Liquid pressure
Atmospheric pressure

5. What will happen if the float becomes lighter?
Density variations becomes more important
Density variations becomes less important
System becomes less efficient
None of the mentioned

6. Which of the following represents correct relation for pressure in manometer type level measuring system?
(ϱmhm – ϱy)g
(ϱm – ϱy)g
(ϱmhm – ϱ)g
ϱmhm – ϱy

7. Which of the following represents the slow motion of layers of fluid in one direction?
Laminar flow
Turbulent flow
Viscous flow
Both laminar and viscous flow

8. If shear stress is equal proportional to velocity gradient, fluid is called as _________
Newtonian fluid
Viscous fluid
Laminar fluid
None of the mentioned

9. Which of the following represents newton’s equation for viscosity?
τ = µ(dv/dt)
µ = τ(dv/dt)
τ = dv/dt
τ = µ2(dv/dt)

10. Which of the following represents relation for kinematic viscosity?
Absolute density/mass density
Absolute density × mass density
Absolute density × (mass density)2
Absolute density/(mass density)2

11. Which of the following represents Newtonian fluids?
Lubricating oils
Honey
Rubber suspension
Synthetic oils

12. What happens to the viscosity of liquid and gas when the temperature is increased?
Both increases
Both decreases
For liquid increases and for gas decreases
For liquid decreases and gas increases

13. Orifice type viscometer covert viscosity to _______
Force
Pressure
Displacement
Potential difference

14. Which of the following is not converting viscosity to pressure?
Redwood viscometer
Saybolt viscometer
Orifice viscometer
Rotameter viscometer

15. Rotameter type viscometer converts viscosity to angular displacement.
True
False
all of the above
None of the mentioned

16. Which of the following represents Hagen-poissule equation?
µ = (πd4ΔP)/(128Q’L)
µ = (d4ΔP)/(128Q’L)
µ = (πd4ΔP)/(Q’L)
µ = (πd4)/(128Q’L)

17. In ______ velocity of fluid is constant on every point at a specific time.
Steady flow
Rotational flow
Non steady flow
None of the mentioned

18. If all particle of fluid has a path parallel to the wall, it is known as _______
Stream line flow
Laminar flow
Viscous flow
All of the mentioned

19. Which of the following represents Reynolds number for laminar flow?
Less than 2000
Greater than 4000
Infinite
None of the mentioned

20. Bernoulli’s theorem is applicable for fluid path with moderate frictional force.
True
False
all of the above
None of the mentioned

21. ________ measures velocity at a point of fluid in a stream.
Venturi meter
pH meter
Pitot-Static tubes
None of the mentioned

22. Which of the following represents obstruction type flow measuring systems?
Centrifugal force type
Rotating vane system
Flow nozzle device
None of the mentioned

23. Static vane system causes pressure loss in flow.
True
False
all of the above
None of the mentioned

24. Which of the following represents the correct relation between flow rate and area of pipe?
Direct proportionality
Inverse proportionality
Equal
None of the mentioned

25. Which of the following converts flow to rotational motion?
Rotatic vane system
Rotameter flow system
Both rotameter flow system and rotatic vane system
None of the mentioned

26. Centrifugal force elements are used for ________
High flow rate
Low flow rate
All range of flow rate
None of the mentioned

27. Which of the following uses displacement to pressure conversion?
Flapper nozzle system
Gyroscope
Viscometer
None of the mentioned

28. Displacement to pressure systems are used for measuring _______
Displacement
Velocity
Acceleration
Force

29. Which of the following represents the correct relation between pressure and displacement in flapper nozzle system?
Direct proportionality
Inverse proportionality
Equal
None of the mentioned

30. Which of the following represents normal value for Pout/Pin?
Less than 0.2
Between 0.2 and 0.75
Between 0.75 and 1
Greater than 1

31. Which of the following is correct for flapper nozzle system?
Used in hydraulic system only
Used in pneumatic system only
Used in both hydraulic and pneumatic system
None of the mentioned

32. Range of displacement of flapper required to change output pressure over the useful range is known as _____
Cut-off displacement
Throttling range
Threshold value
Break value

33. Which of the condition is applicable for flapper nozzle system?
Measuring air should be free from dust
Measuring air must be of constant pressure
Measuring air should be of free from dust and of constant pressure
None of the mentioned

34. Which of the following represents condition for a volume of chamber?
As large as possible
Limited to 5 cc
AS small as possible
No limit

35. Which of the following represents ideal flapper nozzle system?
Ratio of output and input pressure 0.75 at displacement = 0
Ratio of output and input pressure 1 at displacement = 0
Ratio of output and input pressure 0.5 at displacement = 0
Ratio of output and input pressure 0 at displacement = 0

36. At which point of displacement pressure chara has maximum slope?
0.14(di/dt)2
(di/dt)
0.5(di/dt)2
None of the mentioned

37. Seismic transducers are used to measure _______
Displacement
Velocity
Acceleration
All of the mentioned

38. Seismic mass has freedom to move any direction.
True
False
all of the above
None of the mentioned

39. Relative displacement between housing frame and seismic mass in seismic transducer will be ______
Xi(t)-Xm(t)
Xi(t)+Xm(t)
2Xi(t)
2Xm(t)

40. Which of the following represents the application of spring?
To provide stability
To provide oscillatory motion
To provide restoring force
None of the mentioned

41. Damper system is used to ________
Produce oscillations
Limit oscillations
To produce displacement
For indication

42. Which of the following represents the correct relation for undamped natural frequency of system?
KM
(KM)1/2
K/M
(K/M)1/2

43. Seismic transducer is only applicable for displacement measurement.
True
False
all of the above
None of the mentioned

44. Which of the following spring-mass arrangement is used for displacement measurement?
Soft spring small mass
Soft spring large mass
Stiff spring small mass
Stiff spring large mass

45. How bandwidth can be increased?
Lowering natural frequency
Increasing natural frequency
Doubling natural frequency
Bandwidth cannot be increased

46. Seismic displacement transducers are not suitable for measuring ______
Vibrating velocities
Static velocities
Dynamic velocities
None of the mentioned

47. Axis of rotation of wheel in gyroscope is called ________
Spin axis
Vertical axis
Vertical axis
Angular axis

48. Gymbels are used for _________
Improving rotational speed
Supporting gyro wheel
As damping agent
None of the mentioned

49. Which of the following represents angular momentum of gyro wheel?
jsΩs
js
js/Ωs
None of the mentioned

50. Turning of the rotor about a third axis when a torque transverse to spin axis is known as _______
Transverse shear
Transverse stress
Precession
Face shear

51. Increase in angular momentum decreases error.
True
False
all of the above
None of the mentioned

52. Which of the following represents condition for ideal gyroscope?
Infinite drift of spin axis
Infinite speed for gyro meter
Very low drift of spin axis
None of the mentioned

53. Which of the following represents characteristic of a rate gyro?
More sensitive
Soft spring of lower value for K
High angular momentum
All of the mentioned

54. Which of the following represents integrating type gyroscope?
Zero order system
First order system
Second order system
Third order system

55. Integrating type gyroscope has high sensitivity due to ______
High Hs
Lower damping coefficient
Both high Ha and lower damping coefficient
None of the mentioned

56. Rate gyroscope is a _______
Zero order system
First order system
Second order system
Third order system

57. Resistive transducers are _______
Primary transducers
Secondary transducers
Either primary or secondary
None of the mentioned

58. What will happen to resistance, if the length of the conductor is increased?
Decreases
No change
Increases
Doubles

59. Which of the following can be measured using change in resistivity?
Temperature
Visible radiation
Moisture content
All of the mentioned

60. What will happen for resistivity metal and semiconductor if the temperature is increased?
Increases
Decreases
For metal increases and for semiconductor decreases
For metal decreases and for semiconductor increases