Question 1

Which of the following is NOT true of magnetic fields?

Accepted Answer

A)  unlike poles attract 
B)  flux lines exit from the north pole 
C)  flux lines enter the south pole 
D)  flux density is lowest at the poles 
A)  unlike poles attract 
B)  flux lines exit from the north pole 
C)  flux lines enter the south pole 
D)  flux density is lowest at the poles

Question 2

Resistance to current flow through a circuit is measured in:

Accepted Answer

A)  watts 
B)  ohms 
C)  volts 
D)  amps 
A)  watts 
B)  ohms 
C)  volts 
D)  amps

Question 3

What is electromagnetic field force measured in?

Accepted Answer

A)  flux density 
B)  magnetomotive force 
C)  applied voltage 
D)  lines of magnetic force 
A)  flux density 
B)  magnetomotive force 
C)  applied voltage 
D)  lines of magnetic force

Question 4

When coils are used in the injector driver units in truck ECMs, which of the following best describes their role?

Accepted Answer

A)  isolation transformers 
B)  ignition coils 
C)  step-down transformers 
D)  step-up transformers 
A)  isolation transformers 
B)  ignition coils 
C)  step-down transformers 
D)  step-up transformers

Question 5

In the electron theory of electrical flow, which of the following is true?

Accepted Answer

A)  electrons flow from positive to ground 
B)  electrons flow from negative to ground 
C)  electrons flow from negative to positive 
D)  electrons flow from anode to cathode 
A)  electrons flow from positive to ground 
B)  electrons flow from negative to ground 
C)  electrons flow from negative to positive 
D)  electrons flow from anode to cathode

Question 6

Materials that inhibit the flow of electrons are known as:

Accepted Answer

A)  capacitors 
B)  shells 
C)  insulators 
D)  conductors 
A)  capacitors 
B)  shells 
C)  insulators 
D)  conductors

Question 7

In which of the following types of defective electrical circuits would you expect to measure the most current flow?

Accepted Answer

A)  open circuit 
B)  high resistance circuit 
C)  short circuit 
D)  burned out load device 
A)  open circuit 
B)  high resistance circuit 
C)  short circuit 
D)  burned out load device

Question 8

Which of the following is a common use of a capacitor on a truck electrical system?

Accepted Answer

A)  temperature sensor 
B)  spike suppressor in digital circuit 
C)  GPS transponder 
D)  stepper transformer 
A)  temperature sensor 
B)  spike suppressor in digital circuit 
C)  GPS transponder 
D)  stepper transformer

Question 9

When current flow is created by moving a conductor through a magnetic field, it is known as:

Accepted Answer

A)  thermoelectricity 
B)  photoelectricity 
C)  piezoelectricity 
D)  electromagnetic induction 
A)  thermoelectricity 
B)  photoelectricity 
C)  piezoelectricity 
D)  electromagnetic induction

Question 10

Voltage is a measure of:

Accepted Answer

A)  reluctance 
B)  resistance 
C)  potential difference 
D)  wattage 
A)  reluctance 
B)  resistance 
C)  potential difference 
D)  wattage

Question 11

What is another way of saying charge differential?

Accepted Answer

A)  resistance 
B)  current flow 
C)  voltage 
D)  wattage 
A)  resistance 
B)  current flow 
C)  voltage 
D)  wattage

Question 12

Who discovered the relationship between electrical potential, current flow, and resistance in an electrical circuit?

Accepted Answer

A)  Ohm 
B)  Volta 
C)  Watt 
D)  Franklin 
A)  Ohm 
B)  Volta 
C)  Watt 
D)  Franklin

Question 13

What happens to current flow in a series circuit if an additional load (resistance) is added?

Accepted Answer

A)  it remains the same 
B)  it decreases 
C)  it increases 
D)  it ceases 
A)  it remains the same 
B)  it decreases 
C)  it increases 
D)  it ceases

Question 14

If the primary coil is energized in a transformer, what happens in the secondary coil if it is connected into a closed circuit?

Accepted Answer

A)  nothing until it too is powered up 
B)  current flow is induced 
C)  nothing until the secondary circuit is open 
D)  nothing until primary coil de-energizes 
A)  nothing until it too is powered up 
B)  current flow is induced 
C)  nothing until the secondary circuit is open 
D)  nothing until primary coil de-energizes

Question 15

Which of the following is NOT an advantage of an LED over a light bulb element?

Accepted Answer

A)  converts light directly to electricity 
B)  has no heat losses 
C)  produces more light with less current 
D)  longer service life 
A)  converts light directly to electricity 
B)  has no heat losses 
C)  produces more light with less current 
D)  longer service life

Question 16

In the words cathode and anode, what does ode mean?

Accepted Answer

A)  positive 
B)  negative 
C)  terminal 
D)  resistance 
A)  positive 
B)  negative 
C)  terminal 
D)  resistance

Question 17

What happens to current flow in a parallel circuit if an additional path for current flow is added to the circuit?

Accepted Answer

A)  it remains the same 
B)  it decreases 
C)  it increases 
D)  it ceases 
A)  it remains the same 
B)  it decreases 
C)  it increases 
D)  it ceases

Question 18

When the emitter of one transistor is used to supply the base signal to a second transistor in a vehicle computer amplification circuit, the arrangement is known as:

Accepted Answer

A)  Darlington pair 
B)  silicon controlled rectifier 
C)  siamese relay 
D)  thyristor 
A)  Darlington pair 
B)  silicon controlled rectifier 
C)  siamese relay 
D)  thyristor

Question 19

Which of the following is true of a semiconductor?

Accepted Answer

A)  four electrons in outer shell 
B)  less than four electrons in outer shell 
C)  more than four electrons in outer shell 
D)  four electrons in inner shell 
A)  four electrons in outer shell 
B)  less than four electrons in outer shell 
C)  more than four electrons in outer shell 
D)  four electrons in inner shell

Question 20

Current flow is measured in:

Accepted Answer

A)  amperes 
B)  watts 
C)  volts 
D)  ohms 
A)  amperes 
B)  watts 
C)  volts 
D)  ohms

Exam 32: Review of Electrical and Electronics Fundamentals

Which of the following is NOT true of magnetic fields?

Resistance to current flow through a circuit is measured in:

What is electromagnetic field force measured in?

When coils are used in the injector driver units in truck ECMs, which of the following best describes their role?

In the electron theory of electrical flow, which of the following is true?

Materials that inhibit the flow of electrons are known as:

In which of the following types of defective electrical circuits would you expect to measure the most current flow?

Which of the following is a common use of a capacitor on a truck electrical system?

When current flow is created by moving a conductor through a magnetic field, it is known as:

Voltage is a measure of:

What is another way of saying charge differential?

Who discovered the relationship between electrical potential, current flow, and resistance in an electrical circuit?

What happens to current flow in a series circuit if an additional load (resistance) is added?

If the primary coil is energized in a transformer, what happens in the secondary coil if it is connected into a closed circuit?

Which of the following is NOT an advantage of an LED over a light bulb element?

In the words cathode and anode, what does ode mean?

What happens to current flow in a parallel circuit if an additional path for current flow is added to the circuit?

When the emitter of one transistor is used to supply the base signal to a second transistor in a vehicle computer amplification circuit, the arrangement is known as:

Which of the following is true of a semiconductor?

Current flow is measured in:

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