New Hire power Test

A non-linear load draws current at a steady constant rate.

True

False

According to NEC, what percentage of rated current is allowed to be drawn from a receptacle?

70%

80%

90%

100%

Apparent Power is the maximum power that can be drawn by the load. While watts is the "real power" that is being drawn and can be used.

True

False

Brownouts have been commonly used to describe under voltages.

True

False

Choose which of the following is not a valid category of power distribution:

Single Phase

Two Phase

Three Phase

Device that is used to step up or step down voltage:

Grounding rod

Transformer

Voltage stepper

Multimeter

Frequency is best described as ________________.

A fluctuation in attractive force between two moving objects.

The number of complete cycles a sine wave oscillates per second.

Between 78 – 92 Hz in the United States.

A unit of measure in the radio industry

Many of the mysteries of equipment failure, downtime, software and data corruption, are the result of a problematic supply of power

True

False

The nature of AC power is that it has _________________.

Current that flows in one direction only

Current that flows in one direction and then the opposite

Current that is inversely proportional to the voltage

Current only when the load is linear

There should only be one ground in an electrical system

True

False

What are the 7 types of Power problems are classified by their unique _________

Wave shape

Voltage range

Distortion Levels

Frequency range

What is current?

The measure of resistance between two stationary bodies

The flow of neutrons between atoms

The flow of electrons

The charge differential between protons and electrons in an atom.

What is resistance?

The difference in electrical charge between two points.

A fluctuation in attractive force between two moving objects

A certain hindrance or opposition to the passage of an electrical current

The charge differential between protons and electrons in an atom

What is Voltage?

The difference in electrical charge between two points.

The pressure exerted upon an atom by its electron/s

Electric current equal to 1 coulomb per second.

A dynamic physical state under normal temperature and pressure.

Which of the following power problems is a reduction of AC voltage at a given frequency for the duration of .5 cycles to 1 minute?

Over voltage

Sag

Swell

Transient

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