1. . Dipsticks are used for the ____________ measurement.
(A) Pressure
(B) Level
(C) Density
(D) Flow
2. . The gauge on a tank provides an indication of level at all times. What category of level measurement would you say it represents?
(A) Resistive
(B) Multipoint
(C) Continuous
(D) Conductive
3. . The gauge mounted at the bottom of a tank relies on hydrostatic pressure to provide a level indication. What type of level measurement device is it?
(A) Direct
(B) Conductive
(C) Indirect
(D) Multipoint
4. . Which of these terms is defined as the position of the surface of a liquid or a solid above or below a fixed reference point?
(A) Pressure
(B) Level
(C) Volume
(D) Zero point
5. . Which of these direct level measurement devices has a weight attached to the end of a reel of flexible measuring tape?
(A) Float and cable
(B) Resistance tape
(C) Conductivity probe
(D) Plumb bob
6. . The pipe in a bubbler system is open at the bottom, but connected at the top to a pressure-sensitive gauge and ____________.
(A) A similar tank
(B) A suction device
(C) A regulated air supply
(D) An orifice plate
7. . The level of a liquid under pressure can be determined using ____________.
(A) Bubbler system
(B) Differential pressure manometer
(C) Diaphragm box system
(D) Air-trap system
8. . Which of the following level-measurement technologies cannot be adapted to measure solid (powder) level in a vessel?
(A) Displacer
(B) Float and tape
(C) Ultrasonic
(D) Radar
9. . Process level measurement is important because of ____________.
(A) Inventory management
(B) Process safety
(C) Consistent supply
(D) All these
10. . To indicate the presence or absence of a liquid or solid at some point is known as _____________ level measurement.
(A) Continuous
(B) Point
(C) Direct
(D) Indirect
11. . The measurement of the fluid level over a continuous range is known as ________ level measurement.
(A) Continuous
(B) Point
(C) Direct
(D) Indirect
12. . Capacitance probe is a ____________ level measuring instrument.
(A) Continuous
(B) Point
(C) Direct
(D) All these
13. . Float operated level measurement devices are ____________ type instruments.
(A) Indirect
(B) Pressure sensing
(C) Direct
(D) Pneumatic
14. . Which of the following conversions take place in float element?
(A) Level to force
(B) Level to voltage
(C) Level to displacement
(D) None of the mentioned
15. . In displacement type level measurement, which law is used?
(A) Charles law
(B) Ohms law
(C) Faraday's law
(D) Archimedes principle
16. . A level gauge uses buoyant force to measure liquid level on a nearly stationary object called a ____________.
(A) Pressure gauge
(B) Displacer
(C) Placer
(D) Float
17. . In displacer a force measuring mechanism senses changes in the buoyant force and converts this force into an ____________.
(A) Indication of Level
(B) Indication of pressure
(C) Indication of force
(D) Indication of flow
18. . The amount of pointer rotation depends on the _______ of the displacer.
(A) Size
(B) Shape
(C) Weight
(D) All of these
19. . The displacer gauge can be modified to use with a different liquid by replacing the displacer with one of a different ____________.
(A) Diameter
(B) Color
(C) Material
(D) All these
20. . For less dense liquid the _________ of the displacer is required.
(A) Smaller diameter
(B) Greater diameter
(C) Smaller pipe size
(D) Smaller the weight
21. . A sight glass is also called _________ glass.
(A) Indicator
(B) Hollow
(C) Level
(D) Gauge
22. . The principle of the Reflex Glass is based on the difference in the ________ of liquid and gas or in particular of water and steam.
(A) Deflection
(B) Viscosity
(C) Movement
(D) Refractive indices
23. . The main disadvantage of using gauge glass is that it is read _________.
(A) At remote location
(B) On Computer
(C) At tank location
(D) In control room
24. . Refraction gauge is based on the principle of _________.
(A) Deflection
(B) Refraction
(C) Movement
(D) Reflection
25. . Light is bent, or refracted, to a greater extent in water than in __________.
(A) Steam
(B) Oil
(C) Solid
(D) All of these
26. . In float level measurement float rests __________________ and follows the changing level of liquid.
(A) On the surface of liquid
(B) At the bottom of the tank
(C) In the middle of the tank
(D) At the top of the tank
27. . A floating body would always follow the varying liquid level because of its _________
(A) Weigh
(B) Shape
(C) Material
(D) Buoyancy
28. . The top of the float is usually made _________ so that any solid suspensions in the liquid do not settle on the float and change its weight.
(A) Straight
(B) Sloping
(C) Hollow
(D) Bended
29. . As the level rises the apparent weight of the displacer _________.
(A) Decreases
(B) Increases
(C) Remains same
(D) Doubles
30. . A liquid in a tank at rest exerts a force on the walls of the tank. This force in a liquid at rest, is known as _________.
(A) Atmospheric pressure
(B) Differential pressure
(C) Static pressure
(D) Hydrostatic pressure
31. . Hydrostatic pressure is proportional to the ________ of liquid in the tank.
(A) Pressure
(B) Height
(C) Viscosity
(D) Volume
32. . In open tank level measurement, the lower leg of the DP detector is _________.
(A) Connected to the bottom of tank
(B) Connected to the top of tank
(C) Connected to the middle of tank
(D) Vented in air
33. . Conductivity probes operates on the principle that most liquids _______.
(A) Are Viscous
(B) Conduct electricity
(C) Have thermal properties
(D) Resist electricity
34. . An air purge system consists of a hollow tube known as _________ inserted in the liquid of the tank.
(A) Capillary tube
(B) Doppler tube
(C) Torque tube
(D) Bubbler tube
35. . The pressure gauge connected to the air purge system is calibrated in terms of liquid _________.
(A) Level
(B) Pressure
(C) Density
(D) Flow
36. . In bubbler system when there is no liquid in the tank, the pressure gauge indicate _________.
(A) Zero
(B) 100
(C) 50
(D) 75
37. . The speed of ultrasonic waves in air at 0 °C is ________ meter/second.
(A) 231
(B) 331
(C) 431
(D) 531
38. . The velocity of sound is proportional to the square root of ________.
(A) Density
(B) Level
(C) Temperature
(D) Force
39. . When the level of tank raises, the capacitance of probe varies due to change _________.
(A) In dielectric
(B) In plate size
(C) In plate material
(D) All of these
40. . Which one of the following is not a level measuring instrument?
(A) Displacer
(B) Sight glass
(C) Dipstick
(D) Thermocouple
41. . Which one of the following is not an indirect level measuring instrument?
(A) Sight glass
(B) Bubbler tube
(C) Ultrasonic sensor
(D) Conductivity probe