Exam (elaborations)
ATT FC COMP TEST: QUESTIONS WITH SOLUTIONS
- Course
- Institution
ATT FC COMP TEST: QUESTIONS WITH SOLUTIONS
[Show more]
Content preview
ATT FC COMP TEST: QUESTIONS WITH SOLUTIONSWhat three factors determine the severity of an electric shock? Right Ans -
1) Amount of current flowing through the body, 2) Path of current through the
body, 3) Length of time the body is in the circuit
How much current can be lethal? Right Ans - 50-150 milliamperes
How much more DC than AC does it take to freeze a body to a conductor?
Right Ans - 5 times: 12 ma AC, 60 ma DC
What are three types of burns? Right Ans - 1) Electrical, 2) Arc, 3) Thermal
Contact
What are three well-known examples of electrical protection devices Right
Ans - 1) Fuse, 2) Circuit Breakers, 3) Ground-Fault Circuit Interrupters
(GFCIs)
Never use ____ or ____ to extinguish an electrical fire because they are
electrically conductive substances. Right Ans - water, foam
What are the 4 steps that should be taken in the case of an electrical fire?
Right Ans - 1) de-energize, 2) call the fire department, 3) control / put out the
fire, 4) report fire
Schematic diagrams are drawn so that the date or signal flows through the
circuit from ____ to ____. Right Ans - left, right
What are the two methods to troubleshoot a circuit? Right Ans - 1) trial
and error, 2) logical procedure
What are the four steps to troubleshooting a circuit? Right Ans - 1) Analyze
the circuit, 2) Check the setup, 3) Calculate and measure values, 4) Check the
results.
What are three characteristics of an open? Right Ans - 1) infinite resistance,
2) no circuit current, 3) measure applied voltage
, What are three characteristics of a short? Right Ans - 1) no resistance, 2)
increases circuit current, 3) measures 0 voltage
What are the three characteristics of a changed value? Right Ans - 1)
resistance increases or decreases, 2) increases or decreases circuit current, 3)
measures voltage other than calculated
What is a representation of AC voltage or current? Right Ans - The sine
wave
____ is determined by the number of cycles that occur in one second. Right
Ans - Frequency
What is the basic unit of measurement for frequency? Right Ans - the Hertz
(Hz)
____ is the length of time required to complete one cycle of an AC sine wave.
Right Ans - Period
The symbol for period is ____? Right Ans - T
Time is expressed as a ____. Right Ans - decimal part of a second
The formula for period is ____. Right Ans - T = 1 / f
____ is the distance from beginning to end of one complete cycle of an AC sine
wave. Right Ans - Wavelength
The symbol for wavelength is ____. Right Ans - λ (lambda)
Wavelength is expressed in ____ or ____. Right Ans - meters or centimeters
The formula for wavelength is ____. Right Ans - λ = 300 x 10^6 / f - where f
is Hertz
A changed value component changes ____ and ____. Right Ans - ZT, IT
A ____ eliminates the component from the circuit. Right Ans - short
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
