Exam (elaborations)
ET ATT COMP TEST: QUESTIONS WITH SOLUTIONS
- Course
- Institution
ET ATT COMP TEST: QUESTIONS WITH SOLUTIONS
[Show more]
Content preview
ET ATT COMP TEST: QUESTIONS WITH SOLUTIONSOSHA stands for: Right Ans - Occupational Safety and Health
Administration
Minimum amount of current to "freeze" the body to a conductor: Right Ans
- 12mA AC or 60mA DC
Different Current Amounts vs the Body: Right Ans - 1-5 mA: Faint tingling
to slight shock
6-16 mA: Painful shock, shaky muscles
17-99 mA: Extreme pain, hard to let go, heart flutters begin
100-2000 mA: Heart flutters definite, severe muscle contractions, nerve
damage, significant chance of death.
2000+ mA: Cardiac arrest, organ damage, severe burns, certain death.
Electrical Burns Right Ans - Most serious type of burn, results from current
flowing through tissue/bone.
Arc Burns Right Ans - Caused by high temperatures near the body. Can be
caused by arcs or explosions.
Thermal Contact Burns Right Ans - Results from contact with high
temperature surfaces.
The Law of Electrostatics States: Right Ans - Unlike charges attract and like
charges repel.
Power Resistor Right Ans - Used with large current flows, are also known
as "Wire Wound Resistors."
Precision Resistors Right Ans - Have a tolerance of 1% or less. Used when
exact resistance values are necessary.
Tolerance Right Ans - Measures the percent error of a resistor, the lower
the tolerance the more accurate a resistor's ohmic value.
Fuses Right Ans - Open when too much current melts them.
, Signals on a Schematic flow from: Right Ans - Left to Right. Inputs on the
left, outputs on the right.
The power supply on a schematic is usually at: Right Ans - The bottom left.
All magnets possess: Right Ans - A North Pole
A South Pole
Flux Lines
Flux Lines Right Ans - Lines that form a magnetic field around the magnet,
moving from North to South outside the magnet.
Permeability Right Ans - How easy it is to magnetize something, the
willingness of a material to become magnetized.
Retentivity Right Ans - How well a material can stay magnetic, ability of a
material to retain magnetism.
Ferrous Particles Right Ans - Ferrous means iron. A material without
ferrous particles is NONMAGNETIC.
Left Hand Rule Right Ans - A method for finding the north pole of an
electromagnet. The thumb is the direction of the current, the fingers are the
direction of the flux lines.
Magnetomotive Force Right Ans - That force that creates the flux lines
when current passes through a coiled conductor.
Magnetic Circuit Breakers Right Ans - Open a circuit by generating a
magnetic field when current flow becomes excessive.
Multimeter Fun Facts! Right Ans - - Leads are not considered a functional
area of the multimeter.
- When measuring current, don't place/remove leads with the power on.
- Never measure resistance with the power on.
- Best range is always the closest value HIGHER than value to be measured.
Continuity Right Ans - - The resistance of a wire/connection
- There are two readings for continuity, 0 Ohms(short) or Infinite Ohms(open)
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 $9.99. 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