1 b final delmar, NEC

A parallel circuit is composed of two 60 ohm resistors what is the total resistance

30 ohms

A two series resistor series circuit has an applied voltage of 100 v the voltage across one of the resistors is 40 v the voltage across the one resistor is

60 volts

2.81 K= 1000

A 62 k ohm and a 82 k ohm resistor are connected in parallel they have a supply voltage of 480 v what is the power of the 82 k ohm resistor?

36.9 amps 1 _ X

A circuit has a voltage of 100 volts across five resistors in parallel (5,14,21,25,100 ohms the total current is ?

Series

A circuit that has only one path of current flow

5,000,000

A dc voltmeter had s resistance of 20,000 ohms per volt. What is the resistance of the meter if the range selection switch is set on the 250 volt range?

A circuit breaker or fuse

A device that is designed to open and disconnect a circuit in the event of excessive current is a ?

Fuse

A device that is designed to open and disconnect a circuit in the event of excessive current is a ?

Product over sum, reciprocal formula,resistors of equal value

A method for finding total resistance of parallel resistors is

Resistors of equal value , reciprocal formula, product over sum

A method of finding total resistance of parallel resistors is ?

6 amps

A parallel circuit composed of a 10 ohm and a 22 ohm resistor. It has a supply voltage of 60 volts. What if the current in the 10 ohm resistor?

960

A series circuit has a total resistance of 240 ohm and a current flow of 4 a what is the applied voltage?

Only parallel components

A simple parallel circuit is a circuit that contains ?

246.16

A three branch parallel circuit has a total resistance of 385.83 ohms two of the resistors are 680 ohm and 1500 ohm what is the value of the third resistor

10 watts Dissipate means (-)

A three resistor circuit has a total power of 25 w two of the resistors dissipate 10 w and 5 w respectively. How much power dose the third resistor have

3

A two branch circuit has 2 a of current in one branch and 3a in the other branch. The beach considered the larger load is the branch with _____ Amos

10

A two branch parallel circuit has a 30 ohm and a 15 ohm resistor what is the total resistance ?

10 ohms Parallel 1/x add

A two branch parallel circuit has a 30 ohm and a 15 ohm resistor. What is the total resistance?

Multi range

A voltmeter with a selector knob to select one of several voltage scales is called a ________ voltmeter

Smaller wire

According to the standard system of wire sizes in the United States which ranges from 50 to 1 a larger number represents.

0.001

An ammeter shunt had a voltage drop of 50 mv when 50 a of current flow through it. What is the resistance of the shunt?

Chassis

An electrical connection made by connecting to the frame of electrical equipment is called a ________ ground

Revision block

Changes to the drawings will be noted in the ?

One series resistor

During the solving of a combo circuit it is necessary to simplify a parallel block to ____

10 feet

EMT must be supported every?

150 v to ground

Exposed no current carrying metal parts of fixed equipment must be grounded if the equipment operates with any terminal over ______ volts

Directly across the source of power

How is a voltmeter connected into a circuit

Connected in series with the load, And the ammeter is connected to the secondary of the transformer

How is an ammeter connected into a circuit

Trace the current paths

In a combo circuit to identify which paths are series and rich paths are parallel you should

Load

In a parallel circuit the amount of current flow in a branch is known as the ____ of the branch

Voltage dividers

In a parallel circuit the current through each branch is inversely proportional to the resistance of the branch because of this parallel circuits are sometimes called ______ ________

Smaller than the smallest

In a parallel circuit the total resistance is_____ value resistance

Sum

In a series circuit with two total resistors the total resistance is equal to the _____ of the two resistors

N.r.t.l nationally recognized testing laboratories ______?

Make unannounced inspections at electrical equipment factories

The installation specifications of surface metal raceways

NEC ARTICLE 386 contains

Special equipment

NEC chapter 6 covers

1. Make before break switch. makes connection before it breaks connection with the shunt to witch it is connected. 2.connecting s shunt to a meter movement is to use an Ayrton shunt in this circuit connection is made to different paths of the shunt and the meter movement is never disconnected from the shunt.

Name two methods used to make a dc multi range ammeter

Reciprocal

Of the formulas for finding the total resistance of parallel resistors only one formula will work for any number of resistors regardless of their value. The formula is?

What type of meter contains its own type of power source

Ohmmeter

Ensure the conduit enters straight into the junction box

One purpose of an off set bend is too?

Go around obstacles

Purpose of a saddle is too?

20 inches

Score ding to the NEC section 219.52 (c) (5) the maximum mounting height for a receptacle installed above a kitchen countertop is ?

9 chapters

The NEC is divided into how many chapters?

1-1/4

The NEC requires that all octagon boxes have a minimum depth of ____ inches

Voltage drop

The amount of _______ across a resistor is proportional to its resistance

1895

The first nationally recognized code was published in ?

Ex/ ( Rx/rt) et

The general voltage divider formula is ?

Positive

The polarity of the voltage across a resistor depends on the direction of current flow through the resistor. The end of the resistor into which current enters is assigned the polarity of ____________

Prevent the passage of gases vapors and flames through a conduit

The purpose of a ceiling fittings is to ?

Current

The term "load" refers to the amount of _____ Ina a circuit branch

60 volts Add voltages together to get total voltage

The total voltage in a circuit with voltage drops of 15 25 20 is

85 volts

The two resistors in a series circuit have voltages of 25 volts and 60 volts the applied voltage is?

Back to back

Tow 90 degree bends in the same piece of conduit are required for a?

4

Two cable that each have two wires enter a box are connected to a terminal and then exit agin the total conductor count is?

The distance around a circle

What disc describes circumference ?

A plug set

What eliminates wrinkling or flattening when bending PVC

Ex = (Rx/rt ) et Refer to uglys

What formula is the general voltage divider formula

A very low resistance connection between two points in an electric current that alternatitive path for abortion of the current ( is a low resistance device used to conduct most of the current away from the meter movement )

What is the purpose of an ammeter shunt

15 ohms E2/p

What is the resistance of a light bulb that uses 15 watts of power when placed across a 15 volt battery

The distance the coil turns against the spring is proportional to the strength of the magnetic field developed in the coil

What is the turning force of a d'arsonvak meter movement proportional too? (Anolog meter )

Pvc

What type of conduit should be used where corosiion is a factor

Dc power

What type of voltage must be connected to a d arson all meter movement?

NEC tables 310.15 b 16-19

Where can you find the ampacity of conductors for given conditions.

Octagon and round boxs

Which type of boxs are typically used for wall mounted lighting fixtures?

Type c

Which types of conduit bodies are used to provide a pull point on a straight conduit run?