Download Test #2 - tech

Name: ________________________ Class: ___________________ Date: __________
ID: A
Please print the bubble sheet and use that to answer ALL questions. For True/False section A=True, B=False.
Fill in the “Student ID Number” with the last four digits of your UUID (last digit to the right).
TECH3821 - Test #2 - Fall 2016
True/False
Indicate whether the statement is true (A) or false (B).
____
1. pH is one of the easiest measurements to make electronically.
____
2. Pressure is one of the most prolific measurement transmitters due to their many uses.
____
3. To measure very small changes in a transmitter, a weir is used.
____
4. Lockout / Tagout is used to prevent injuries when equipment is being repaired
____
5. Vibration is used to predict impending failures of gear boxes, motors and other spinning equipment.
Multiple Choice
Select the BEST ANSWER to the following.
____
____
____
6. A Transducer
a. converts a voltage into a binary value that c.
can be used by a computer
b. is a device that converts voltage to
d.
current
7. A bi-metallic strip
a. is used in thermostats
b. measures pressure
c.
d.
is used for over current protection
a and C
8. A Thermistor is
a. a linear temperature measuring device
c.
a device that changes resistance
proportionally or inversely proportionally
to temperature
is a solid state device that measures
temperature
b.
____
is a device that converts a physical
quantity into an electrical signal
is another name for a transformer
a device that changes voltage
proportionally to the temperature of the
device
9. A Thermocouple is
a. a silicone based temperature measuring
device
b. a juction of two similar metals that
changes it resistance with temperature
____ 10. An old style thermometer is an example of
a. a bi-metalic strip
b. dial thermometer
d.
c.
d.
a device that creates motion with a
temperature change
a juction of two dissimilar metals that
produces a small voltage when exposed
to a temperature change
c.
d.
filled-bulb
thermistor
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Name: ________________________
____ 11. A manometer is a
a. simple temperature measuring device
b. a simple pressure measuring device
ID: A
c.
d.
a simple level measuring device
a test of one’s manhood
____ 12. Which of the following does NOT convert pressure into a force
a. bellows
c. diaphragm
b. bi-metallic strip
d. bourdon tube
____ 13. To convert the deformation of a diaphragm into an electrical signal a ___________ is often used
a. thermistor
c. silicone device
b. switch
d. strain gauge
____ 14. A stilling well is
a. used to get an accurate measurement of
level in a tank that is being stirred
b. measures flow
____ 15. Power Factor
a. is a way of measuring power (watts)
b. an indication of inductive or capacitive
lead/lag
____ 16. F.O. stands for
a. Fixed o-ring
b. Flow over
c.
measures inductance
d.
a another name for a weir
c.
d.
a current measurement method
a way to determine a motors efficiency
c.
d.
Fail open
Fried output
____ 17. The following is an example of ________________
a.
b.
current transformer
Slip ring
c.
d.
2
stepper motor
DC Commutator
Name: ________________________
ID: A
____ 18. The following is an example of ________________
a.
b.
current transformer
Slip ring
c.
d.
stepper motorr
DC Commutator
____ 19. The following is an example of ________________
a.
b.
current transformer
Slip ring
c.
d.
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stepper motor
DC Commutator
Name: ________________________
ID: A
____ 20. In the diagram, what does is “TIC”
a.
b.
the temperature measuring device
the actuator
c.
d.
the controller
none of the above
c.
d.
the controller
none of the above
____ 21. In the diagram, what does is “TT”
a.
b.
the temperature measuring device
the actuator
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Name: ________________________
ID: A
____ 22. In the diagram, what does is “TV”
a.
b.
the temperature measuring device
the actuator
c.
d.
the controller
none of the above
b.
a closed loop control system
c.
d.
single acting cylinder
relay
____ 23. The following Diagram shows
a.
an open loop control system
____ 24. Define the symbol below:
a.
b.
double acting cylinder
solenoid
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Name: ________________________
ID: A
____ 25. Define the symbol below:
a.
b.
double acting cylinder
solenoid
c.
d.
single acting cylinder
relay
c.
single solenoid, spring return, 5/2
directional control valve
manual, spring return, 5/2 directional
control valve
____ 26. Define the symbol below:
a.
b.
single solenoid, spring return, nomally
closed, 3/2 directional control valve
manual, spring return, nomally closed,
3/2 directional control valve
d.
____ 27. Given the diagrams below:
What will happen when PB1 is pressed and held down?
a.
The cylindar will extend
c.
b.
the cylindar will extend, hit the limit
switch, then retract
d.
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the cylindar will extend, hit the limit
switch, then start to retract, then
immediatly extend again.
It will not work
Name: ________________________
ID: A
Multiple Response
Identify one or more choices that best complete the statement or answer the question.
____ 28. A pressure transmitter can be used to do the following (mark ALL that apply)
a. measure flow
d. measure level
b. measure pressure
e. check for a clogged filter
c. measure temperature
f. measure a vacuum
____ 29. Measuring Level can be accomplished by using the following transmitters (select ALL that apply)
a. floats
e. pressure transmitters
b. temperature transmitters
f. bubble tube
c. sonar
g. radar
d. laser
h. load cells
____ 30. The following can be used to measure flow (mark ALL that apply)
a. weir
e. vortices
b. bi-metallic strip
f. differential pressure
c. variable area float
g. thermistor
d. paddlewheel
h. magnetic flux
____ 31. Conductivity can be measured using (check all that apply)
a. induction
c. thermistors
b. electrodes
d. resistors
____ 32. A quadrature encoder can be used to determine (select all that apply)
a. speed
c. direction
b. drive current
d. relative movement
____ 33. Position can be determined by (select ALL that apply)
a. absolute encoder
c. slide wire
b. potentiometer
d. LVDT
____ 34. The following are considered actuators (mark ALL that apply)
a. current transformer
d. motor
b. valve
e. rotory flow meter
c. pneumatic cylendar
f. solinoid
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