Units 1-

A resistor whose valises can be varied over a range of values is called a blank resistor

Variable

What is another term for electromagnetic force (emf)

Voltage

What meter is designed to be connected directly across the power source

Voltmeter

What meter measures true power in a circuit

Wattmeter

A charge curve for a capacitor is divided into blank time Constants

5

Electrical current is the flow of

Electrons

What letter symbolizes the farad

F

In a capacitive circuit the voltage leads the current by 90 electric degrees true or false

False

The shock that results from walking across a carpet and touching doorknob is and example of a black static charge

Nuisance

What meter must never be connected to a circuit when the circuit power is turned on

Ohmmeter

The current voltage power and resistance in a series circuit can be calculated using blank law

Ohms

The unit for inductive reactants or XL is

Ohms

Circus to have more than one path of current flow are blank circuits

Parallel

There is very little resistance and a large amount of current flows in a blank circuit

Short

The voltage rating of a capacitor blank

Should never be exceeded

Exponential curves are always divided into blank time Constants

5

Three capacitors a 12 microF a 20microf and a 30 microf are connected in parallel what is the total Xc

6.42 ohms

Three capacitors a 12 F a 20f and a 30f are connected in parallel what is the total Capacitance

62 f

In the national electrical code the current carrying abilities of conductors are called the blank

Ampacities

A test meter that uses a scale and pointer to indicate values is a blank meter

Analog

The value of a resistor can often be determined by the color code. What is the color code and values

B. Black 0 B. Brown 1 R. Red 2 O. Orange 3 Y. Yellow 4 G. Green 5 B. Blue 6 V. Violet 7 G. Grey 8 W. 9 Gold 5% Silver 10%

A combination circuit is a circuit that contains blank

Both series and parallel components

Losses in the Core of iron core and doctors include blank and blank losses

Eddy current and hysteresis

Energy in a capacitor is stored as a blank

Electro static charge

Polarized capacitors are also known as blank capacitors

Electrolytic

When a conductor cuts magnetic lines of force a voltage is induced into the conductor this principle is called blank

Electromagnetic induction

The theory concerning current flow that is most widely accepted as being correct is the blank flow theory

Electron

What type of magnet depends on the flowing current to produce a magnetic field?

Electron magnet, dc current

What are the 3 principals of an atom

Electron proton neutron

In a series circuit the sum of the voltage drops is blank the applied voltage

Equal too

A voltmeter has a very blank resistance connected in series with the meter movement

High

When a magnetic field continually changes magnitude and direction of voltage is continually being induced in the coil the voltage is called blank voltage

Induced

What is the non-conductive covering around a wire

Insulation

In a pure inductive circuit the current blank

Lags voltage by 90°

In a pure capacitive circuit the Current blank the applied voltage by blank

Leads 90°

In a parallel circuit the total resistance is blank value resistor

Less than the lowest

Conventional flow theory states current flows from the most positive point to the most blank point

Negative

A junction point of current Paths is often called a blank

Node

Static electricity refers to electrons that are what

Not moving

What is the unit for capacitive reactance

Ohms

One coulomb per second is equal to one what

One amp

Inductors always blank a change in current

Oppose

Most devices such as a light receptacle at home and office buildings are connected in blank circuits

Parallel

When a capacitor is connected in a circuit with a resistor the amount of time needed to charge the capacitor is called the blank

RC time constant

What force is demonstrated in objects with like charges

Repulsion

In a series circuit the total blank is equal to the sum of the individual resistors

Resistance

The longer the conductor the more blank it will have

Resistance

What type of load contains pure resistance

Resistive

When AC voltage is rectified in converted into DC the resulting waveform is normally not pure flat DC the pulse is that occur are called

Ripples

A circuit that only has one path for current to flow is called a blank circuit

Series

And ammeter is connected in blank with the load to permit the load to limit current flow

Series

In a crane what motor goes up and what motor goes down

Series up shunt down

Rotating machines normally produce a waveform called a blank wave

Sine

The blank a fact occurs when a C in deuces eddy current into the conductor which causes the electrons to be repel toward the surface of the conductor

Skin

In a parallel circuit the total current flow is equal to the blank of the current through all the branches

Sum

How many color bands are used on resistors that have a tolerance of 20%

Three

When the current flows through and inductor stops in the current also decreases at an exponential rate a blank occurs

Voltage spike

The amount of electrical power being used in a circuit is measured in what

Watts

A series circuit has blank paths for current flow

1

And electrical circuit has a voltage of 50v and resistance of 5ohms. What is the value of current?

10 amps E=IR

Two in doctors are connected in series to a 120 V 60 Hz supply the values of the inductors are 1.5 Henry and 2.5 Henry the total inductive reactants is blank

1508 Henry

A series RC circuit contains two resistors and two capacitors the resistor's are 82 ohms and 47 ohms the capacitors have a capacitive reactance of 80 ohms and 50 ohms what is the total impedance

183.14 ohms

What is the applied voltage in a series circuit with two resistors of 25 V and 60 V respectively

85 volts

What is a device that opposes a change of voltage

A capacitor

To test wire insulation a special type of ohmmeter called a blank is used

A megger

When a capacitor is connected to a blank circuit current appears to flow through the capacitor

AC

A point that is used as a common connection for other parts of a circuit not actually driven into the ground is called a blank ground

Chassis

When is circuit has only one pass the blank is the same at any point

Current

Each complete way form of 360° is called a blank

Cycle

If an object is placed in a field of a strong electromagnet connected to an AC line, the object will be blank

Demagnetized

A voltage blank is used to provide different voltages between certain points in a circuit

Divider

True or false. During normal operation of a typical 120 volt appliance circuit, current flows through the hot, grounding, and neutral conductors

False

What is the basic unit of capacitance

Farad

Magnetic lines of force are referred to as

Flux

The number of cycles completed in one second is called a

Frequency

What device is designed to open and disconnect a circuit in the event of excess current

Fuse

What color color multiplier means to divide the combined first two numbers by 10

Gold

The neutral conductor is also referred to as the blank conductor

Grounded

What is the unit of measurement for inductance

Henry

Frequency is measured in

Hertz

When current rises and falls at the same rate as the voltage in reverse is the direction of flow in the voltage reverse polarity the current is said to be blank with the voltage

In phase

Increasing the surface area of the plates will cause the capacitance of a capacitor to blank

Increase

The maximum points of a waiver form is called the

Peak

The measure of a material's ability to be magnetized is called

Permeability

A capacitor is constructed by separating to metal conductors known as blank with an insulating material known as blank

Plates dielectric

By observing the direction of current flow through the circuit voltage blank can be determined

Polarity

What is another term for a variable resistor

Potentiometer

The time required for current in an inductor to reach its full ohms law value is called the blank time constant

R-l

Basic law of physics states that like charges blank and opposite charges blank

Repel, attract

In a DC circuit the product of volts time is the amperes is called the blank power

True

True or false A grounding conductor helps prevent a shock hazard in the event that am ungrounded, or hot, conductor comes in contact with a case or frame of an appliance

True

True or false. Earth contains magnetic poles

True

Power factor PF is the ratio of the blank power to the blank power

True apparent

Direct current is described as

Unidirectional

Of the different power values in a RC circuit which is known as apparent power

VA

The power in a capacitor is reactive power what is the unit for reactive power

VAR

The symbol for reactive power is blank

VARS

Alternating current is described as

bidirectional

What meter measures resistance

ohm meter

What force is demonstrated in objects with unlike charges

Attraction

The unit of resistance to current flow is the

Ohm

In parallel circuits the voltage drop across any branch is the same as blank

The applied voltage

What is indicated by the fourth band on a 4 band resistor

Tolerance, explain all Bands

What is the symbol for capacitive reactance

Xc

The symbol for inductive reactants is

Xl

The amplitude of a waveform is measured from

Zero to the highest value obtained in either direction