ATT ET COMP TEST 2024 WITH QUESTIONS AND ANSWERS
OSHA stands for: - ANSWER Occupational Safety and Health Administration
Minimum amount of current to "freeze" the body to a conductor: - ANSWER
12mA AC or 60mA DC
Different Current Amounts vs the Body: - ANSWER 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 - ANSWER Most serious type of burn, results from current
flowing through tissue/bone.
Arc Burns - ANSWER Caused by high temperatures near the body. Can be caused
by arcs or explosions.
Thermal Contact Burns - ANSWER Results from contact with high temperature
surfaces.
The Law of Electrostatics States: - ANSWER Unlike charges attract and like
charges repel.
Power Resistor - ANSWER Used with large current flows, are also known as "Wire
Wound Resistors."
Precision Resistors - ANSWER Have a tolerance of 1% or less. Used when exact
resistance values are necessary.
Tolerance - ANSWER Measures the percent error of a resistor, the lower the
tolerance the more accurate a resistor's ohmic value.
Fuses - ANSWER Open when too much current melts them.
Signals on a Schematic flow from: - ANSWER Left to Right. Inputs on the left,
outputs on the right.
, The power supply on a schematic is usually at: - ANSWER The bottom left.
All magnets possess: - ANSWER A North Pole
A South Pole
Flux Lines
Flux Lines - ANSWER Lines that form a magnetic field around the magnet,
moving from North to South outside the magnet.
Permeability - ANSWER How easy it is to magnetize something, the willingness
of a material to become magnetized.
Retentivity - ANSWER How well a material can stay magnetic, ability of a
material to retain magnetism.
Ferrous Particles - ANSWER Ferrous means iron. A material without ferrous
particles is NONMAGNETIC.
Left Hand Rule - ANSWER 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 - ANSWER That force that creates the flux lines when
current passes through a coiled conductor.
Magnetic Circuit Breakers - ANSWER Open a circuit by generating a magnetic
field when current flow becomes excessive.
Multimeter Fun Facts! - ANSWER - 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 - ANSWER - The resistance of a wire/connection
- There are two readings for continuity, 0 Ohms(short) or Infinite Ohms(open)
Junction Diode - ANSWER - Allows current to flow in one direction only
- When forward biased, it acts as a closed switch
OSHA stands for: - ANSWER Occupational Safety and Health Administration
Minimum amount of current to "freeze" the body to a conductor: - ANSWER
12mA AC or 60mA DC
Different Current Amounts vs the Body: - ANSWER 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 - ANSWER Most serious type of burn, results from current
flowing through tissue/bone.
Arc Burns - ANSWER Caused by high temperatures near the body. Can be caused
by arcs or explosions.
Thermal Contact Burns - ANSWER Results from contact with high temperature
surfaces.
The Law of Electrostatics States: - ANSWER Unlike charges attract and like
charges repel.
Power Resistor - ANSWER Used with large current flows, are also known as "Wire
Wound Resistors."
Precision Resistors - ANSWER Have a tolerance of 1% or less. Used when exact
resistance values are necessary.
Tolerance - ANSWER Measures the percent error of a resistor, the lower the
tolerance the more accurate a resistor's ohmic value.
Fuses - ANSWER Open when too much current melts them.
Signals on a Schematic flow from: - ANSWER Left to Right. Inputs on the left,
outputs on the right.
, The power supply on a schematic is usually at: - ANSWER The bottom left.
All magnets possess: - ANSWER A North Pole
A South Pole
Flux Lines
Flux Lines - ANSWER Lines that form a magnetic field around the magnet,
moving from North to South outside the magnet.
Permeability - ANSWER How easy it is to magnetize something, the willingness
of a material to become magnetized.
Retentivity - ANSWER How well a material can stay magnetic, ability of a
material to retain magnetism.
Ferrous Particles - ANSWER Ferrous means iron. A material without ferrous
particles is NONMAGNETIC.
Left Hand Rule - ANSWER 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 - ANSWER That force that creates the flux lines when
current passes through a coiled conductor.
Magnetic Circuit Breakers - ANSWER Open a circuit by generating a magnetic
field when current flow becomes excessive.
Multimeter Fun Facts! - ANSWER - 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 - ANSWER - The resistance of a wire/connection
- There are two readings for continuity, 0 Ohms(short) or Infinite Ohms(open)
Junction Diode - ANSWER - Allows current to flow in one direction only
- When forward biased, it acts as a closed switch
