Noctu

A 240 volt circuit breaker requires blank space in a load center supply by a 3 wire, 120-240- volt system

2

The total resistance of 3 resistors in parallel with values of 5, 7.5 and 20 ohms is

2.61 ohms

The rating of a transformer whose maxium safe output is 480 volts at 4.16 amps is

20 KVA

How many watts are dissipated by an electric heater that draws 84mA on a

20.16W

Hwo many conductors are needed between two 3 way switches excluding the ground

3

Not counting the ground, how many conductors are required for a split recepticle

3

What is the maximum number of current carrying conductors allowed in a conduit before derating must occur

3

What is the safest distance for ladder from the wall

3 feet 4.1

The blank conductor is connected to the negative terminal in a DC circut

Black

The term dielectric strength is generally used when disscussing

Brass, copper and zinc

The apparent resistance to AC by a capaitor is called

Capacitive reactance

Which of the following is a type of motor thwt has the capacitor connected in the series with the starting windings and the centrifugal switch

Capacitor start motor

What should be done of you develop a blister

Clean the area and bandage it

What terminal on a three way switch is identified by a color different than all the others

Common

The two conductive materials used in most power transimition applications are

Copper and aluminium

An alternating current that goes through a complete set of positive and negative values can best be described by which of the terms below

Cycle

Photovoltatic panels convert sunlight to

DC voltage

As the load increases in a parallel circut, the resistance of the circut

Decreases

When using non-metalic shealth cable what color must be reidentified when used as a hot conductor

White

Magnets will work on the principle that opposite poles

Will attract

If a wire has continuity, it

Will have no resistance

The secondary windings of a control transformer can be indentified by symbols

X1-X2

What does AWG stand for

American Wire Guase

MC cable requires

Anti-short bushings

What is the first thing you should do if someone has a cut and is bleeding

Apply pressure

To control a load from four locations the switches needed are

Two 3 way switches and two 4 way switches

Power transformers are rated in

VA or KVA

Electromotive force is measured in

Volts

Use a ______ to measure the real (true) power of a motor in AC circuit

Wattmeter

All cimplete circuts require

Source, path and load

Solar panels mounted in the US should be facing

South

The grounded conductor is identified by its color which is

White

A rectifier converts

Alternating current to direct current

A problem with using an aluminium conductor for electrical circuits is that

Aluminium forms a nonconductive layer

What does ANSI stand for

American Nutral Standards Institute

A 100 watt bulb has been buring for 10 hours the local utility company charges 8 cents per kwh what is the cost of energy consumed by the bulb?

.08

One mA is equal to

0.001 amps

A 12-volt circuit has a resistance of 50 ohms. The total circuit is

0.24 mA

A step-down transformer with a turns ratio of 5:1 is rated for 240 volts AC at 5 amps for the primary and its rated at blank in the secondary

1,200 VA

Bored holes through wood members must be kept a minimum of ___ from the nearest edge of the wood member

1-1/4 inches

The maximum set back distance for mounted device boxes in noncombustable walls shall be

1/4 inch

Thhe ratio of a transformer with primary voltage of 120 and a secondary voltage of 12 is

10:1

Measured horizontally from an outlet the maximum distance between put,ets and a residence is

12 feet

The NEC states that nonmetallic shealth cable be seccured by staples or straps with a(n) blank from every cabinet, box or fitting

12 inches

The minimum size for cooper branch conductors in a dwelling is number

14 AWG

How far must a ladder extend above the roof

36 inches

On a blueprint scale of 1/8" = 1 foot 0 inch, 5-12" length represents

44 feet

If the voltage source supplies 240 volts and rhe resistance measures 5 ohms, the current is

48 amps

A conduit run is 175 feet long, and a 3-wire cirtuit must be installed with single-conductor wire. What is the total length of the wire, allowing for 24 inches on each end?

537 feet

According to the NEC there needs to be at least blank of free conductor measured from the point in the box where it emerges from its race way or ts cable shealth

6 inches

Three capacitors of 100 microfarads, 200 microfarads, and 300 microfarads connected in parallel, will have total circuit capacitance of

600 microfarads

If 689 feet of conduit is required for a job. How many lengths of conduit is needed

69

If two, 15-ohm resistors are connected in parallel, the total circuit resistance is

7.5 ohms

What is the locked rotor current of a 50HP, 230V, design Code B, three-phase motor

725A

What is a a Robertson Connector

A square drive

What is Lockout, Tag out

A tag prevents something from being used

The purpose of a bridge rectifieris to change

AC to DC current

Diodes conduct when they are blank biased

Forward

Which of the following BEST describes a motors physical characteristics

Frame size

A unit of frequency is a(n)

Hertz

When a polarity tester indicates reverse polarity on a receptacle, the

Hot and neutral wires are reversed

Multiple stop switches in a three-wire motor control the circuit are wired

In a series

A coil that opposes any change and current flow is called a(n)

Inductor

When connecting a DC wind turbine to an AC electrical panel, a(n) blank must be connected prior to the main panel

Inverter

A semiconductor diode that emits light when a voltage is applied to it is a(n)

LED

When lifting, use your

Legs

A compact flourescent bulb presents enviromental hazards because it contains

Mercury

A conductor is classified as a material that allows flow of electricity with blank resistance

Minimal

The operation of the AC transformer is based on yhe principle that the electrical energy can be transfered efficiently from the primary winding to the seconddary winding. This energy id called

Mutual inductance

Blank is also called ROMEX

Nm

Use a blank to detect kinetic energy

Occupancy sensor

A megaohm equals

One million ohms

When a dual-voltage, three-phase motor is to be connected for low voltage operation, the phase windings must connect in

Parallel

The rate at which energy is consumed by a circuit is called

Power

The transformer winding to which the AC input voltage source is usually connected is called the blank winding

Primary

What should you do if someone faints

Raise their feet

Power factor is an example of

Ratio of true power to apparent power

A blank is an electromagnetic device in a low voltage system used for remote or automatic control

Relay

To test a relay out-of-circuit, measure the blank or the coil

Resistance

All PPEA requirements include

Safety glasses

The basic law for circuit in a series circuit states that the current is the

Same in all parts

The "hot" side on a polarized receptacle is identified by the

Shorter slot

The AC voltage waveform is called a ____wave

Sinusoidal

Which tasks below must be completed to have a top or a bottom of a duplex receptable switched

The tab between the two hot screws must be broken

What should you do if someone has a nosebleed

Tilt head back and apply pressure

One of the major causes of inductive heat in a conduit or raceway in AC circuts is

To many current carrying conductors in the raceway