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BASIC ELECTRICITY

Total questions: 70

Worksheet time: 1hrs 7mins

Name
Class
Date
1.
------ is the unit that measures the pressure or force that pushes the flow of electrons forward through a conductor.
a)
Wattage
b)
Voltage
c)
Amperes
d)
Ohm
2.
The term used for measuring the resistance of an electric current is:
a)
wattage
b)
Voltagr
c)
amperes
d)
Ohm
3.
The term used for measuring how much electric energy is being used in one second is
a)
Wattage
b)
Ampere
c)
Volt
d)
Ohms
4.
The term used for measuring the strength of an electric current is:
a)
Wattage
b)
amperes
c)
Voltage
d)
ohms
5.
What electrical term is abbreviated as AC?
a)
alternating current
b)
ampere current
c)
active current
d)
Anaphoresis current
6.
Safety devices that prevent the overheating of electric wires are known as:
a)
fuses and busters
b)
fuses and circuit breakers
c)
circuit breakers and volts
d)
fuses and conductors
7.
An insulator or -------- is a substance that does not easily transmit electricity.
a)
vaporizer
b)
metal
c)
nonconducto
d)
wayer
8.
Rapid and interrupted current that changes direction 60 times per second is known as:
a)
direct current
b)
nonconductor curre
c)
alternating current
d)
Erratic current
9.

The circuit shown on the picture above is an example of a /an _______

a)

Closed Circuit

b)

Open Circuit

10.

What can we do to make this circuit pictured a "closed circuit" so the bulb lights up?

a)

connect wire to the terminal

b)

disconnect the wire from the lightbulb

c)

screw in the lightbulb

d)

replace the battery

11.

What is the energy source for this circuit?

a)

Battery

b)

Electric socket

c)

Wires

d)

Light Bulb

12.
A flow of electrons through a conductor is called:
a)
A river
b)
A spark
c)
An electron flow
d)
A current
13.

The unit to measure power

a)

watt

b)

ohm

c)

volt

d)

ampere

14.

What form of energy is stored in a battery?

a)

chemical energy

b)

gravitational potential energy

c)

kinetic energy

d)

thermal energy

15.

What is the SI unit of voltage?

a)

ampere

b)

ohm

c)

volt

d)

watt

16.

What is unique about AC voltages vs DC voltages?

a)

Current flows quicker

b)

Operate safer

c)

Easier to install

d)

Can be transformed

17.

9. It converts electrical energy into different forms of energy such as light, heat, or sound in an electric circuit.

a)

A. load

b)

B. switch

c)

C. voltage source

d)

D. conducting wire

18.

Opposition to current flow in a circuit

a)

Obstruction

b)

Direct Current

c)

Stoppage

d)

Resistance

19.

If Voltage increases then Current

a)

Increases

b)

Decreases

c)

Stays the same

20.

Ohm's Law States That

a)

Voltage = Force X Distance

b)

Current = Power X Time

c)

Voltage = Energy/Time

d)

Voltage = Current X Resistance

21.

In a Series Circuit the Total Resistance =

a)

R1 + 1/R2 + R3 + 1/R4...

b)

R1 + R2 + R3...

c)

1/R1 + 1/R2 + 1/R3...

d)

(R1 * R2) + R3+ R4/2 + (R5 * R6)...

22.

This is the electric symbol for open switch.

a)
b)
c)
d)
23.

Which is NOT a major component of a circuit?

a)

Load

b)

Resistor

c)

Source

d)

Wire

24.
This circuit is ____
a)
Open
b)
Closed
c)
Short
25.
This circuit is ____
a)
Open
b)
Closed
c)
Short
26.
What law does this picture represent?
a)
Charles
b)
Ohms
27.

What is the electrical device that changes voltage of an alternating current (A.C.) supply?

a)

transformer

b)

furnace

c)

generator

d)

turbine

28.

What is the energy conversion when you plug in a charger to charge batteries?

a)

electrical to light

b)

chemical potential to electrical

c)

thermal to chemical potential

d)

electrical to chemical potential

29.

The storage battery generally used in electric power station is

a)

Nickel-cadmium battery

b)

Zinc carbon battery

c)

Lead-acid battery

d)

None of the above

30.

When we say car battery is fully charged at 100 % ?

a)

12.6V +

b)

12.4V

c)

12.2V

d)

12V

31.

Is a 12V car battery AC or DC?

a)

AC

b)

DC

32.

A 12 volt, lead acid car battery is made up of how many cells?

a)

4

b)

6

c)

8

d)

12

33.

The amount of current that a fully charged battery can supply for 20 hours without voltage falling below 10.5.volts This is known as what?

a)

Cold cranking amps

b)

Reserve capacity

c)

Amp-hour rating

d)

BCI group

34.

Battery acid is also referred to as ________.

a)

Electronic Acid

b)

Hydraulic Acid

c)

Battery Juice

d)

Electrolyte

35.

PbO2 means

a)

Lead dioxide

b)

Lead peroxide

c)

Lead sulfate

d)

Sponge lead

36.

How many percent of water in the electrolyte solution?

a)

10%

b)

20%

c)

30%

d)

40%

37.

The lead –acid cell constructed by

a)

a. Positive plate, negative plate and separator

b)

b. Positive plate, negative plate and acid

c)

c. Positive plate, negative plate and water

d)

d. Lead acid, water and separator

38.

A relay is a

a)

mechanical switch

b)

electronic switch

c)

electromechanical switch

d)

all of the above

39.

What is the resistance for a Red, Green, Blue color resistor?

a)

250,000 ohms

b)

25K ohms

c)

25,000,000 ohms

d)

250K ohms

40.

What is the color code for a Orange, Black, Red resistor?

a)

3K Ohms

b)

200 Ohms

c)

2K Ohms

d)

300 Ohms

41.

What is the tolerance for a Red, Brown, Brown, Silver resistor?

a)

1%

b)

20%

c)

5%

d)

10%

42.

Which digit on the 1st band does the color yellow denote on a resistor color band?

a)

3

b)

2

c)

4

d)

7

43.
Resistor Value ?
a)
36 Ω +/- 5 %
b)
350 Ω +/- 5%
c)
250 Ω +/- 5 %
d)
360 Ω +/- 5 %
44.

What is the resistance?

a)

65K ohms

b)

68K ohms

c)

71K ohms

d)

78K ohms

45.

The K stands for

a)

hundred

b)

thousand

c)

millions

d)

millis

46.

The M stands for

a)

millis

b)

thousands

c)

hundreds

d)

millions

47.

To prevent local action in battery, only ............is used in electrolytes

a)

Pump water

b)

Distilled water

c)

Tap water

d)

Both A and C

48.

Which one of these best describes function of the alternator?

a)

Electric generator that uses mechanical (engine) power to produce electricity

b)

Ammeter, voltmeter, or warning light that warns the driver about charge condition

c)

Wiring that connects the parts of the system.

d)

Large device that stores electricity for use later on

49.

True or False: An alternator produces a Alternating Current (AC).

a)

True

b)

False

50.

What is the name of an electrical device that only allows current flow in one direction. Otherwise known as a electrical check valve?

a)

Fuse

b)

Diode

c)

Photocell

d)

Multi-meter

51.

What is the name of an electrical device that only allows current flow in one direction. Otherwise known as a electrical check valve?

a)

Fuse

b)

Diode

c)

Photocell

d)

Multi-meter

52.

What parts of the alternator are found on the Alternator Rotor? Select all that are correct. (pg 536)

a)

Field Coil Winding

b)

Alternator Slip Rings

c)

Pole Pieces

d)

Voltage Rectifier

53.

The alternator rotor spins inside the alternator stator.

a)

True

b)

False

54.

On the common Voltage Rectifier how many diodes are used to convert AC to DC?

a)

2

b)

4

c)

6

d)

8

55.

The alternator stator produces the electrical output. (True/False)

a)

True

b)

False

56.

Why does an alternator use a internal or external fan?

a)

To keep the EPA happy

b)

To help cool the engine

c)

To cool off the diodes preventing damage

d)

To make the alternator cool looking

57.

The alternator pulley spins what part inside the alternator?

a)

The stator

b)

The rotor

c)

The voltage regulator

d)

The voltage rectifier

58.

The alternator is rotated by harnessing mechanical energy from the?

a)

The crankshaft pulley

b)

An external electric motor

c)

The battery

d)

Air spinning the fan on the alternator

59.
What is the component of an alternator that switches output from AC to DC
a)
Rectifier pack
b)
Voltage stabilizer
c)
Rotor
d)
Delta
60.
The alternator is a device for changing mechanical energy into _____ energy.
a)
potential
b)
chemical
c)
thermal
d)
electrical
61.
An alternator _____ consists of field windings mounted on a shaft.
a)
stator
b)
rotor assembly
c)
rectifier bridge
d)
diode trio
62.
Alternator brushes ride on _____ to feed current to the field windings.
a)
bearings
b)
fan teeth
c)
slip rings
d)
hair
63.
The alternator _____ changes alternating current into direct current.
a)
transistor
b)
stator
c)
rectifier
d)
regulator
64.
An alternator _____ consists of three groups of windings and produces the electrical output of the alternator.
a)
transistor
b)
stator
c)
rectifier
d)
regulator
65.
A voltage regulator controls alternator output by changing the amount of current flowing through the _____.
a)
field windings
b)
battery cable
c)
fusebox
d)
diode
66.
The voltage regulator keeps alternator output at a preset charging voltage of approximately _____ to _____ volts.
a)
12-14
b)
12-16
c)
12.0-12.6
d)
13-15
67.
Alternator _____ and electrical _____ determine whether the regulator increases or decreases charging output.
a)
size, shape
b)
speed, load
c)
load, speed
d)
brand, strength
68.

Name this component

a)

Coil

b)

Stator

c)

Transformer

69.

What is this?

a)

ground

b)

key

c)

starter

d)

solenoide

70.

It serves as a step-up transformer because it raises the 12 volts battery voltage to thousands of volts.

a)

IGNITION COIL

b)

BATTERY

c)

SPARK PLUG

d)

DISTRIBUTOR

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