Safety
AC / DC
Hand and Power Tools
Audio / Video Systems
System Designer
100
Metal ladders should NOT be used near _____.
electrical equipment
100
Ohm's law defines the relationships of ____, ____, and ____.
current, voltage, resistance
100
When something is plumb, it is _____.
precisely vertical
100
One common element of all microphones is the ______, which reacts to sound pressure by producing vibrations.
diaphragm
100
Any unwanted electrical signals that are induced into or superimposed onto a power or signal line is commonly referred to as __________.
noise
200
Work that is performed near a hazard but not in direct contact with it is called _____.
proximity work
200
Name these components?
resistors
200
While files have slanting parallel rows of teeth, a rasp _____.
has deeper, individual teeth
200
A woofer speaker operates in the ______ frequency range.
20 Hz to 200 Hz
200
At the conclusion of a project, a qualified person or agency, supervises the acceptance and testing of the system. This acceptance and testing of the system is called _______________.
commissioning
300
______, heat, and fuel must be present in the same place at the same time for a fire to occur.
Oxygen
300
Standard US electrical utility power is 120 volts (alternating current), single phase, at ____ hertz.
60
300
Hammer drills are designed to drill into _____.
concrete, brick, and tile
300
If a flown speaker has a four-point suspension, at least ______ point(s) must be used.
four
300
What is the biggest challenge in filling open positions?
Lack of Qualified Candidates
400
The four leading causes of death in the construction industry include _______, struck-by hazards, caught-in or caught-between hazards, and falls.
electrical hazards
400
Exactly how many Ohm's is a resistor marked 4.4M
4,400,000 Ohms
400
Powder-actuated fastening systems are used to _____.
anchor static loads to concrete
400
The aspect ratio refers to a display's width measurement to its height measurement. The aspect ratio of HDTV is _____.
16:9 or 1.78:1
400
The most basic form of network security is the use of a ____________________________.
password
500
Equipment or clothing designed to prevent or reduce injuries is called _______.
Personal Protective Equipment (PPE)
500
A variable resistor with three terminals is called a _____.
potentiometer
500
Before using a reciprocating saw to cut through a wall or partition, always _____.
find out what is on the other side
500
A video system must have a(n) ______.
video source and an output device
500
Most personal computers use the _________________________________ operating system.
Windows