Exam 10: Measuring Instruments

A voltmeter has a very resistance connected in series with the meter movement.

Most voltmeters are voltmeters, meaning they are designed to use one meter movement to measure several ranges.

When the connection of a meter to the circuit changes the entire circuit operation, this is known as the effect.

A low-resistance device used to conduct most circuit current away from the meter movement is an ammeter _.

The d'Arsonval meter movement is operated by applying current to the coil.

What meter measures resistance?

Moving coil meter is another name for the meter movement.

A shunt device that remains connected to the meter movement and thereby eliminates contact resistance problems is the shunt.

The series ohmmeter is used to measure values of resistance.

What is measured by the Wheatstone bridge?

The low-impedance voltage tester is most suitable for use in .

A test meter that uses a scale and pointer to indicate values is a(n) meter.

What meter must NEVER be connected to a circuit when the circuit power is turned on?

The resistors are connected in parallel with the meter on some ranges and in series for other ranges when a(n) _____ is used.

What is one of the most common analog meter movements?

An ammeter is connected in with the load to permit the load to limit current flow.

What meter is designed to be connected directly across the power source?

A(n) ammeter operates on more than one range by connecting the meter movement to different shunts.

What meter measures true power in a circuit?

The meter is only connected to one of the lines supplying power when using a(n) ammeter.