Electrical Systems for Instrumentation (12116-14)

The voltage level received at a typical residence is ______

240vac

For maximum safety when preparing to work on an electrical circuit, verify that power is off using ____

the live-dead-live procedure

The outcome of an electric shock is based on _____

The amount of current that flows through the body

Wrapping an energized conductor around an iron bar creates a(n) _______

electromagnet

The force that causes electrons to flow is most commonly called _____

Voltage

If a 9V battery produces a current of 3A through a load, the resistance of the load is _____

3ohms

How much power is consumed by a circuit with a 120V source that draws 18A through a resistive load?

2,160 watts

In which type of circuit will a voltmeter read the same voltage when it is placed across the different loads?

parallel

Which of the following values is measured by placing a meter in series with the load?

Current

Which of these values is measured with a circuit de-energized?

Resistance

The power source required by an ohmmeter to measure the resistance of a circuit or device comes from ____

An internal battery

Which instrument is used to check if a circuit is closed or intact. but doesn't provide any accurate measurement of resistance?

Continuity tester

22 AWG wire in an instrumentation system would generally be used for _____

Low Voltage DC supply voltage

A shield in an instrumentation system cable is usually made of ____

aluminum

A drain wire in an electrical system is ___

used to prevent electrical interference in communication wiring

A short circuit is one in which ____

the current bypasses the load

The material on a conductor that prevents it from coming into contact with other conductors is ______

The insulation

The purpose for grounding an electrical system is to ______

limit the voltage entering the system