HVAC Basic Electricity PPT1

Question 1

Power

Answer 1

The rate of doing work, or the rate at which energy is dissipated.

Question 2

Loads

Answer 2

Devices that convert electrical energy into another form of energy

Question 3

Voltage

Answer 3

The driving force that makes current flow in a circuit.

Question 4

Volts (V)

Answer 4

The unit of measurement for voltage, represented by the letter V.

Question 5

Transformer

Answer 5

Two or more coils of wire wrapped around a common core. Used to raise and lower voltages.

Question 6

Direct current (DC)

Answer 6

An electric current that flows in only one direction, such as the current provided by a common battery.

Question 7

Alternating current (AC)

Answer 7

An electrical current that changes direction on a cyclical basis.

Question 8

Rectifier

Answer 8

A device that converts AC voltage to DC voltage.

Question 9

Conductor

Answer 9

A material through which an electrical​ current easily passes.

Question 10

Electromagnet

Answer 10

A coil of wire wrapped around a soft iron core that, when energized, creates a powerful magnetic field.

Question 11

Ground fault circuit interrupters (GFCIs)

Answer 11

Devices that interrupt and de-energize an electrical circuit to protect a person from electrocution in the event of a ground fault.

Question 12

Resistance

Answer 12

An electrical property that opposes the flow of current through a circuit.

Question 13

Arc flash

Answer 13

The intense light and heat produced by an electrical energy release.

Question 14

Hazard Risk Assessment

Answer 14

A process, often conducted by safety personnel, used to identify and evaluate the potential hazards associated with a task and develop ways to control or eliminate them