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WorksheetsInstrumentation L2: Temperature, Pressure, Level, and Flow #3
Total questions: 31
Worksheet time: 16mins
Which of the following describes a method to measure levels directly?
Using a pressure gauge
Using a float
Using a thermometer
Using a barometer
Fill in the blank: Instruments used to measure levels indirectly often rely on ______.
direct contact
pressure changes
visual indicators
temperature variations
Which of the following is a measurement device used to measure temperature?
Barometer
Thermometer
Anemometer
Hygrometer
A _______ is used to measure pressure.
A) Thermometer
B) Barometer
C) Anemometer
D) Hygrometer
What is the primary function of a sight glass?
To measure temperature
To indicate liquid level visually
To control pressure
To filter impurities
A sight glass can function as a control device when additional components, such as ______, are added.
filters
switches
thermometers
valves
What is the main advantage of displacers as shown in the diagram?
They are inexpensive
They can be serviced without accessing the vessel
They are lightweight
They require no maintenance
Fill in the blank: Displacers can usually be serviced and calibrated without accessing the _______.
A) torque tube
B) standpipe
C) vessel or enclosure
D) water level
What is the simplest form of indirect level measurement?
Ultrasonic sensors
Magnetic float units
Radar level transmitters
Pressure transducers
Fill in the blank: In a magnetic float unit, the ______ is responsible for triggering the magnetic switch.
Visual indicator
Magnet
Float
Water level
What is the purpose of insulating the probe in a capacitance-based level measurement instrument when used with a conductive liquid?
To prevent electrical conduction
To enhance measurement accuracy
To reduce cost
To increase durability
In a capacitance-based level measurement instrument, the probe is insulated when used with a ________ liquid.
Non-conductive
Conductive
Viscous
Transparent
What is the principle behind level measurement using ultrasonic devices?
It uses light waves to measure distance.
It uses sound waves to measure the time taken to bounce back.
It uses magnetic fields to detect levels.
It uses temperature changes to measure levels.
Fill in the blank: Sound travels at roughly _____ feet per second.
1,000
1,116
1,200
1,300
What is one advantage of radar-based measurement over ultrasonic devices?
They use sound waves
They determine level using microwaves traveling at the speed of light
They are less expensive
They are more compact.
Radar-based measurement determines level using microwaves traveling at the ______.
speed of sound
speed of light
speed of water
speed of air
What is the specific gravity of water?
0.5
1.0
1.5
2.0
The specific gravity of a substance heavier than water is ____.
<1.0
=1.0
>1.0
0
Specific gravity is defined as the weight of a substance divided by the weight of an equal volume of ____. A) air B) water C) oil D) mercury.
air
water
oil
mercury
What is the level of water in a tank if the gauge reading is 10.8 psi?
300 inches
24.94 feet
Both A and B
None of the above
Fill in the blank: The level of water in a tank with a gauge reading of 10.8 psi is ______ inches.
300
24.94
10.8
0.360
What is the height in inches of oil with a specific gravity of 0.91 when the gauge reading is 10.8 psi?
329.67 inches
300.00 inches
350.00 inches
400.00 inches
Fill in the blank: The height in feet of oil with a specific gravity of 0.91 and a gauge reading of 10.8 psi is ____ feet.
25.00
27.41
30.00
35.00
What is the relationship between the pressure applied to a transmitter at the bottom of a tank and the level of liquid?
Inversely proportional
Directly proportional
No relationship
Exponentially proportional
In some cases, a pressure gauge with an indicator is calibrated in _______ units instead of pressure units.
temperature
volume
level
weight
What is the function of a bubbler system in vessels?
To measure temperature
To measure pressure
To function in both open and closed vessels
To create significant errors.
In a bubbler system, the open end of the line into the tank must be far enough above the bottom to allow for ________.
air circulation
sludge accumulation
water flow
pressure balance
Which of the following devices measures level directly?
Ultrasonic Level Measurement
Capacitance Probe
Lead Line
Bubbler System
The Magnetic Float System is used to measure level ______.
Directly
Indirectly
Based on Head Pressure
What is the main topic of the next session?
Measuring Temperature
Measuring Pressure
Measuring Flow
Measuring Level
Complete the following: The students are required to read Sections 4.0.0 through ____. A) 4.4.0 B) 4.4.6 C) 4.5.0 D) 4.6.0.
4.4.0
4.4.6
4.5.0
4.6.0
