Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

BASIC ELECTRICITY FINAL EXAM QUESTIONS AND CORRECT ANSWERS
2024 LATEST GRADED A+
What is the purpose of a conductor? - answer-Permit the flow of electrons through a circuit with
minimal resistance
...
The circuit is
open
...
001 amps - answer-Milliampere


...
0 volts

In a series circuit, the ________ is the same throughout the circuit
...
- answer-Sum

The _________ remains the same across any of the paths of a parallel circuit - answer-Voltage

In a parallel circuit with three 6ohm resistors across a 12v battery, what is the total current (I total)? answer-6 amps

As frequency increases, capacitive reactance will ______? - answer-Decrease

What is the unit of measurement for capacitance? - answer-Farads

What is the voltage, current phase relationship in a purely capacitive circuit? - answer-I leads E (ICE)

As frequency increases, inductive reactance will ______? - answer-Increase

What is the phase relationship in a purely inductive circuit? - answer-E leads I (ELI)

What is the unit of measurement for inductors? - answer-Henrys

What is the unit of measurement for capacitive and inductive reactance? - answer-Ohms

What is the phase angle with a cosine of
...
- answer-Cosine

Power Factor is the ratio of - answer-True Power to Apparent Power

Power Factor indicated the amount of - answer-Current that is in phase with the voltage

Capacitors store energy in - answer-Electrostatic fields

Inductors store energy in - answer-Electromagnetic fields

Frequency is measure in - answer-Hertz

Rheostats are - answer-Variable resistors

A circular MIL is the standard measurement of a round conductor's what? - answer-cross-sectional area

Complex DC circuits consist of _______ and _______ circuits - answer-Series and Parallel

A charged atom is also known as - answer-Ion

An atom having more electrons than protons will have what kind of charge? - answer-Negative

Materials which permit the flow of electrons are referred to as - answer-Conductors

When electrons flow in a conductor, they cause a ________ to surround the conductor
...
answer-Negative

Static dischargers will dissipate a static charge from a control surface into the? - answer-Air

________ _______ is the magnetism remaining in a material after the magnetizing force has been
removed - answer-Residual Magnetism

If 3 amps of current is flowing in a 12volt series circuit, how much resistance is present? - answer-4
Ohms

When a 5 ohm resistor is placed in a 20v series circuit, how much current will flow? - answer-4amps

The ease with which lines of magnetic flux can pass through a material is known as a material's? answer-Permeability

The sum of all the voltage drops in a series circuit is equal to the? - answer-Source voltage

The total resistance in a series circuit is the _______ of the individual load resistors
...

this statement refers to which law? - answer-Kirchoff's voltage law

The algebraic sum of the current at any junction of conductors in a circuit is zero
...
1

A battery is a device which changes _______ energy to _______ energy - answer-Chemical to Electrical

The specific gravity of a fully charged lead acid battery is approximately - answer-1
...
- answer-Specific Gravity

If it becomes necessary to dilute acid to make electrolyte, it is extremely important that you always add
the _______ to the ________ and never the other way around
...
707

The max difference between the positive and negative peak values of alternating voltage or current is
called what? - answer-Peak to Peak value

In an AC circuit, the product of the voltage and the current is known as - answer-Apparent power

The average value of AC is calculated by multiplying ______ by the peak value - answer-
...
- answer-AC to DC

Inverters Convert ________ to ______ - answer-DC to AC

A generator takes _____ energy and converts it to _____ energy - answer-mechanical to electrical

An alternator converts ____ energy to _____ energy
...
Technician B says that a
loose or corroded ground could cause a blown fuse
...


When measuring amperage in a circuit, which side it may be measured on positive or negative side? answer-Either positive or negative
...


one leg of a parallel circuit has 10 ohms of resistance
...
The total resistance is: - answer-Less than 10 ohms
...


Unwanted (excessive) resistance in a circuit will: - answer-Use up voltage that was meant for the load
...
Lessen the amount of wattage (power) available to the
load
...
This would be an example of a(n) - answer-Short circuit
...
A test light does not tell you how much voltage is present
...


Devices which use electrical current to create a magnetic field are called? - answer-Inductors
...
Technician A says the currently
flow will be
...
Technician B says the current flow will be 750mA
...


A standard car battery is made up of: - answer-Six 2
...


An acceptable parasitic drain on a battery is less than: - answer-75mA and 0
...
The strength of the field may be increased by: - answer-Increased the number of turns or
coils of the conductor
...


Technician A says if a circuit or conductor is tested and shows that it has continuity it will operate
correctly
...

Who is right? - answer-Technician B only
...


A technician needs to check for voltage at an electrical connector
...
What is
most likely the problem? - answer-High resistance in the starter cable
...
What is
most likely the problem? - answer-An engine with to high of a viscosity of oil
...
What are used to
rectify the output to direct current (DC) voltage
...


The charging voltage (car running) of a vehicle should be: - answer-13
...
2 Volts

Technician A says a loose drive belt can cause a low charge condition
...
Who is correct? - answer-Both technician A and
technician B
...
The technician notes there is battery voltage at connector "B" but no
voltage at connector "IG"
...


In an alternator what serves as the output and what serves as the input? (B, IG, S, L) - answer-B is the
output and IG is the input

At ST relay what readings will you get for pin 1, 2, 3, and 5
...

Technician B says that cranking voltage can be measured with the starter off the car
...


Which components utilizes the principles of induction? - answer-Relays, starter motor, starter solenoid
...
3V while performing while operating the starter motor
...


While performing a starting system test on a 4 cylinder vehicle a technician notes that starter motor
current draw to be 220A, the battery cranking voltage is at 10
...
Further inspection of the vehicle
reveals that the engine turns over easily by hand
...
- answer-A bad shorted
starter motor
...
30V is measured with the meter leads connected
between the transmission ground strap and the vehicle chassis while the engine is cranking
...
Technician B says that a parasitic
draw on the electrical system could be the cause
...


Starter current draw is 150A on an engine that cranks slowly
...
This
indicates: - answer-High battery cable resistance
...
While cranking the engine with
the ignition system disabled, the technician observes a 1
...


Reading on relays: Pin #1: 12v Pin #2: 12v Pin #3: 0v Pin #5: 12v
...
What would these reading indicate? - answer-A bad ground

Relay readings of Pin #1: 12v Pin #2: 0v Pin #3: 0v Pin #5: 12v
...
This would indiciate: - answer-A bad relay
...


Two identical lamps are connected in parallel to a 12v source
...
The voltage drop across each lamp is: answer-6v

True or false
...
Technician B says circuit protection
devices are rated in amperage
...


Several lamps are connected in parallel to a source voltage If one light burns out all the other lamps will:
- answer-Not be affected
...
55v
...
Technician B says it is equivalent to 550 milli-volts
...


A digital Ohmmeter is being used to measure a component
...
725K ohms
...
Technician B says a voltmeter should be
connected in parallel
...


How do you use an ammeter to measure current? - answer-Open the circuit and connect the meter in
series between two open ends
...


To measure voltage drop of a connector, the voltmeter should be connected: - answer-In parallel, across
each side of the connector
...
A voltmeter indicates 12
...
Technician A says that a bad
ground at the lamp could be the cause
...
Who is correct? - answer-Technician A only
...
Technician A says a short
circuit is present before the switch
...
Who is correct? - answer-Technician B only
...
048 v can be expressed as: - answer-48 mV
...


In a series circuit the current in and circuit is 10 amps and the resistance is 1
...
10 × 1
...
The current is 5 amps
...
4
ohms
...
Technician B says that
when current flows through a conductor a magnetic field is produced
...


The primary source of resistance in a normally working circuit should be: - answer-The load
...


Would a large or small diameter wire have the greatest amount of resistance? - answer-A small
diameter wire
...
A test light is connected and shine brightly
...

Technician B says a bad ground at a point could be the problem
...
- answer-Both

The fuse in the circuit above blows whenever the switch is closed (turned on)
...
A relay is not
...
The first leg has one ohm of resistance, the second leg
has one hundred ohms, the third leg has one thousand ohms of resistance
...
What Iis the overall total resistance for the parallel circuit? - answer-less than
one ohms



---