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ET ATT COMP TEST: QUESTIONS WITH SOLUTIONS
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ET ATT COMP TEST: QUESTIONS WITH SOLUTIONS
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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)
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