export_25 electrical design

Question 1

Voltage

Answer 1

Voltage is the electrical potential to create current flow in a circuit. It is represented in math by the letter “V” for “volts” or “E” for “electromotive force . “

Question 2

Current

Answer 2

Current is the rate of electrons flowing through a circuit per second. Current is measured in amperes. It is typically represented in math by “I” for “intensity “ or “A” for uamperes.”

Question 3

Resistance

Answer 3

Resistance is the property opposition of the flow of
electrical current. Resistance is measured in ohms . It is typically represented in math by the letter “R 11 for resistance .

Question 4

Impedance

Answer 4

Impedance is the total opposition to current flow in an AC circuit. Uke a DC circuit , an AC circuit contains resistance but it also includes forces that oppose changes in current (inductive reactance) and voltage (capacitive reactance). Jmpedance takes into account all three of these factors . Impedance is frequency dependent, measured in ohms and is symbolized using the letter “Z . “

Question 5

Power

Answer 5

Energy expended in one form manifests itself into
another form - motion, heat , or light. This is power , or the rate at which work is done . It is represented by the letter “P” and is measured in watts (W) .

Question 6

Inverse Square Law

Answer 6

The inverse square law states that the physical quantity or strength is inversely proportional to the square of the distance from the source of that physical quantity. This means that as the distance from a point source of energy (light or sound) doubles , the energy will be distributed over four times the area . The resulting energy will be one-fourth the original intensity.

Question 7

Electrical Service

Answer 7

Electrical service refers to the conductors and
equipment for delivering energy from the electricity
supply system to the wiring system of the site served .

Question 8

Hum

Answer 8

A hum typically falls under the category of noise. It is usually low frequency
and consistent.

Question 9

Crackling, Buzzing and Static

Answer 9

A crackling, buzzing, or static noise can occur in the output of a signal.
These noises are caused by poor connections and can also be caused by
stray whiskers of wire from trimmed cables

Question 10

Heterodyning

Answer 10

Heterodyning produces a frying egg sound.
This is often a sign of interference in a wireless microphone or stray
whiskers in a connector. This noise may also be produced by two
microphones being placed too close together.

Question 11

permeability

Answer 11

ability to conduct

magnetic fields