NCCER Ch. 12 Review

Which of the following is true regarding analog meters?

• Analog meters are solid-state instruments.

• Analog meters provide a digital readout.

• Analog meters rely on a moving-coil meter movement.

• Analog meters provide an autoranging setting.

A voltmeter is used to test

• exact voltages

• voltage ranges

• power

• sine waves

In order to ensure safety, before measuring low voltages, you should first test for resistance

• resistance

• current

• vibration

An ammeter is used to measure

• current

• voltage

• resistance

• insulation value

Clamp-on ammeters operate by

• using d'Arsonval meter movement

• sensing the strength of the electromagnetic field around the wire

• measuring the high resistance end of a power transformer

• using a resistive shunt

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A meter with applied voltages of 500V or 1,000V is a(n)

• megohmmeter

• ammeter

• multimeter

• continuity tester

A motor rotation tester

• tests an energized motor

• gets connected to the motor supply conductors

• is used to identify the motor legs

Tags

NGSS.HS-PS3-5

NGSS.HS-PS3-3

The highest level of protection is provided by instruments rated as

• CAT I

• CAT II

• CAT III

• CAT IV

The International Electrotechnical Commission (IEC) developed a safety standard for overvoltage installation categories of CAT I, CAT II, CAT III, and CAT IV for

• wiring

• electrical equipment

• test equipment

• signaling circuits

What is the lowest acceptable overvoltage category rating for a multimeter that will be used to test small appliances?

• CAT I

• CAT II

• CAT III

• CAT IV