Electric Meters

What would be the resistance of a motor winding that is shorted?

0 ohm

Air-conditioning equipment is designed to operate at a voltage of plus or minus _____ percent.

10

A reading on a digital meter is 120.8; this meter utilizes a _____ digit reading.

3 1/2

The conductor is wrapped around the jaws of the clamp-on ammeter 5 times. If the reading is 35. what is the total current draw of the load?

7 amps

What would be the results of checking voltage with an ohmmeter that has no safety devices?

a damaged meter

What are the results of clamping a clamp-on ammeter around more than one conductor?

a zero reading

What would be the resistance of a circuit with a measurable resistance?

any number

What should be done first in troubleshooting a unit that is not operating?

check the voltage being supplied to the unit

What electrical meter is commonly used to determine the current draw of an electric motor?

clamp-on ammeter

What word is used to refer to a complete circuit that allows current to flow?

continuity

What precaution shouls be taken when checking the resistence of a circuit with an ohm-meter?

disconnect the circuit from the power source

When a service technician desires to check an unknown voltage; the voltmeter should be set on the ______ scale.

highest

What would be the resistance of a circuit that is open?

infinite ohms

If the technician needs to check the resistance of an electrical component in a circuit, what must be done to the component?

isolate thw component being checked

Most analog, electric meters make use of the _______ to create needle movement.

magnetic field

What is produced around a conductor when current is flowing through the conductor?

magnetism

The digital meter make use of ______ to measure and display the electrical characteristics of a circuit.

ohm's law

The voltmeter is connected to the circuit in _____.

parallel

The inline ammeter must be connected in ______ to read the current draw of the motor.

series