One important advantage of an electrostatic meter is that:

It measures very small currents.

It draws a large current from the source.

Gets warm when current flows through it

Is a thin, straight, special wire

Generates dc when exposed to light

One advantage of an electromagnet meter over a permanent-magnet meter is that:

The electromagnet meter is more rugged.

The electromagnet meter costs much less.

The electromagnet meter need not be aligned with the earth’s magnetic field.

The permanent-magnet meter has a more sluggish coil.

An ammeter shunt is useful because:

It allows for the measurement of a wide range of currents.

It increases meter sensitivity.

It makes a meter more physically rugged.

It prevents overheating of the meter.

Voltmeters should generally have:

Ability to withstand large currents

To measure power-supply voltage being used by a circuit, a voltmeter

Is placed in parallel with the circuit that works from the supply

Is placed in series with the circuit that works from the supply

Is placed between the negative pole of the supply and the circuit working from the supply

Is placed between the positive pole of the supply and the circuit working from the supply

Which of the following will not cause a major error in an ohmmeter reading?

A small change in the resistance to be measured.

A small voltage between points under test

A slight change in switchable internal resistance

A slight error in range switch selection

The main advantage of a FETVM over a conventional voltmeter is the fact that the FETVM:

Draws less current from the circuit under test

Can withstand higher voltages safely.

Is sensitive to ac as well as to dc

Which of the following is not a function of a fuse?

To be sure there is enough current available for an appliance to work right.

To make it impossible to use appliances that are too large for a given circuit.

To limit the amount of power that a circuit can deliver.

To make sure the current is within safe limits.

A utility meter’s motor speed works directly from:

The number of watts being used at the time

The number of ampere-hours being used at the time

The number of watt-hours being used at the time

The number of kilowatt-hours being used at the time

A typical frequency counter:

Is usually accurate to six digits or more

Works by indirectly measuring current

Works by indirectly measuring voltage

The display in Fig. 3-18 could be caused by a voltage of:

No way to tell; the meter is malfunctioning.

Gibilisco: Measuring Devices Quiz Questions And Answers

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The change in the direction of a compass needle when a current-carrying wire is brought near is:
- Electromagnetic deflection
- Electrostatic force
- Magnetic force
- Electroscopic force

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