Potentiometer Study guides, Class notes & Summaries
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HVAC CONTRACTOR EXAM 1. An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter: voltmeter 2. This device uses a thermal sensing bulb at the outlet of th
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HVAC CONTRACTOR EXAM 
1. An instrument that measures potential differences between 2 points in an 
electrical circuit is called? 
A. potentiometer 
B. thermistor 
C. ohmeter 
D. voltmeter: voltmeter 
2. This device uses a thermal sensing bulb at the outlet of the evaporator to 
sense temperature and control superheat
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HVAC CONTRACTOR EXAM QUESTIONS AND ANSWERS ALREADY PASSED
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HVAC CONTRACTOR EXAM QUESTIONS 
AND ANSWERS ALREADY PASSED 
 
An instrument that measures potential differences between 2 points in an electrical circuit is 
called? 
 
A. potentiometer 
B. thermistor 
C. ohmeter 
 
D. voltmeter voltmeter 
 
This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and 
control superheat 
 
A. automatic expansion valve 
B. thermostatic expansion valve 
C. low side float 
 
D. schraeder valve thermostatic expansion valve 
 
when...
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HVAC CONTRACTOR EXAM QUESTIONS WITH 100% CORRECT SOLUTIONS ALREADY PASSED!!
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An instrument that measures potential differences between 2 points in an electrical circuit is called? 
A. potentiometer 
B. thermistor 
C. ohmeter 
D. voltmeter - Answer-voltmeter 
This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and 
control superheat 
A. automatic expansion valve 
B. thermostatic expansion valve 
C. low side float 
D. schraeder valve - Answer-thermostatic expansion valve 
when installing a reversing valve on a heat pump, how many br...
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SOS Mechanic Certificate – Electrical 2024 Questions & Answers | 100% Correct | Verified
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After installing a new battery how long should you wait to allow for pcm time - no need to wait 
As blower motor speed decreases the voltage drop across the resistance block.... - increases 
What should you do first when replacing junction block or fuse? - Unlock the battery ground cable 
The polarity of the voltage applied to the electromagnetic coils of an actual working DC motor is.... - 
a commutator 
When performing a volt drop test the volt meter setting should be set to the following.. - ...
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SOS Electrical Test Questions and Answers 100% Pass
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SOS Electrical Test Questions and 
 
Answers 100% Pass 
 
As blower motor speed decreases the voltage drop across the resistance block.... increases 
 
What should you do first when replacing junction block or fuse? Unlock the battery ground 
cable 
 
The polarity of the voltage applied to the electromagnetic coils of an actual working DC motor 
is.... a commutator 
 
When performing a volt drop test the volt meter setting should be set to the following.. 3 
volts 
 
The symbol at the RIGHT repr...
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Test Bank For Computerized Engine Controls 10th Edition by Steve V. Hatch
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Name Clas Dat : s: e: 
Chapter 3 
Common Components for Computerized Engine Control Systems 
 1. What type of sensor is a throttle position sensor? 
a. 
c. 
ANSWER: POINTS: 
Potentiometer Piezoelectric diaphragm 
b. NTC thermistor 
d. Piezoresistive diaphragm 
2. What voltage will be produced by a zirconium dioxide O2 sensor when the air-fuel ratio is on the rich side of stoichiometric? 
ANSWER: POINTS: 
d 1 
b 1 
c 1 
a. 0 mV 
c. 450 mV 
b. 100 mV to 450 mV d. 450 mV to 900 mV 
3. What scale ...
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HVAC CONTRACTOR EXAM
- Exam (elaborations) • 15 pages • 2023
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An instrument that measures potential differences between 2 points in an electrical circuit is called? 
 
A. potentiometer 
B. thermistor 
C. ohmeter 
D. voltmeter - Answer- voltmeter 
 
This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat 
 
A. automatic expansion valve 
B. thermostatic expansion valve 
C. low side float 
D. schraeder valve - Answer- thermostatic expansion valve 
 
when installing a reversing valve on a heat pump, ho...
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Power Engineering - 4A Electrotechnology Practice Questions with Certified Answers
- Exam (elaborations) • 105 pages • 2024
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Power Engineering - 4A 
 
Electrotechnology Practice Questions 
 
with Certified Answers 
 
An ampere is the _______________ of current flow. 
 
a. measurement 
b. cause of increase 
c. cause of reduction 
d. cause 
 
e. resistance a. measurement 
 
An electrical device which is designed to start and stop current flow is the 
 
a. circuit breaker 
b. fuse 
c. potentiometer 
d. resistor 
 
e. switch e. switch 
 
Equivalent resistance is decreased: 
 
a. when voltage is decreased 
b. when a circui...
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HVAC CONTRACTOR EXAM QUESTIONS WITH 100 % CORRECT ANSWERS| VERIFIED
- Exam (elaborations) • 21 pages • 2024
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An instrument that measures potential differences between 2 points in an electrical circuit is called? 
A. potentiometer 
B. thermistor 
C. ohmeter 
D. voltmeter - Answer-voltmeter 
This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and 
control superheat 
A. automatic expansion valve 
B. thermostatic expansion valve 
C. low side float 
D. schraeder valve - Answer-thermostatic expansion valve 
when installing a reversing valve on a heat pump, how many br...
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Mock Exam Hearing Aid Dispenser | 86 Questions And Answers Already Graded A+
- Exam (elaborations) • 26 pages • 2023
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If your patient has a fenestrated canal you would have to do which of the following when taking ear 
impressions: 
a. Use large or multiple otoblocks 
b. use normal type of otoblock 
c. use normal type of otoblock, but with the X-type of string 
d. none of the above - a. Use large or multiple otoblocks 
If your patient is using a device on their hearing aid to exclude room conversation but is able to hear on 
the telephone the hearing aid would have an: 
a. MPO switch 
b. MBO switch 
c. MTO swit...
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