IDA unit 3 review

What type of meter has a high resistance connected in series with the meter movement?

• voltmeter

• ohmmeter

• ammeter

• speedometer

How is a voltmeter connected into the circuit?

• parallel

• series

• parallel-series

• none

If a voltmeter has a resistance of 5000 ohms per volt, what is the resistance of the meter when it is set on the 300-volt range?

• 1,500,000 ohms

• 150,000 ohms

• 15,000 ohms

• 5300 ohms

What is the advantage of using a voltmeter that has a high impedance as opposed to a low-impedance meter?

What is an analog meter?

• a meter with a scale

• a meter with no scale

• a meter with a digital screen

• none of the above

Why must an ammeter be connected in series with the load?

What device is used to change the scale values of an AC ammeter?

• current transformer

• current relay

• transformer relay

• potential relay

What is meant by the term inline ammeter?

A clamp-on ammeter has three turns of wire wrapped around the movable jaw. If the meter is indicating a current of 15 amps, how much current is actually flowing in the circuit?

• 5 amps

• 15 amps

• 45 amps

• 4.5 amps

List the three steps for reading a meter.

• read the meter

• determine what the meter indicates

• Determine the full-scale value