Question 1

What is the amplification capacity of a typical transistor?

Accepted Answer

A)  10 times 
B)  100 times 
C)  10,000 times 
D)  2 times 
A)  10 times 
B)  100 times 
C)  10,000 times 
D)  2 times B

Question 2

What type of transistor can be used in an ECU to switch actuators?

Accepted Answer

A)  power transistor 
B)  field effect transistors 
C)  silicon controlled rectifiers 
D)  MOSFET 
A)  power transistor 
B)  field effect transistors 
C)  silicon controlled rectifiers 
D)  MOSFET A

Question 3

Which of the following components would likely use a Zener diode in a truck electrical circuit?

Accepted Answer

A)  rectifier 
B)  voltage regulator 
C)  electric wiper motor 
D)  spike suppressor 
A)  rectifier 
B)  voltage regulator 
C)  electric wiper motor 
D)  spike suppressor B

Question 4

Technician A says that an NTC thermister type temperature sensor produces non-linear readings,so intermediate resistance values cannot be used to calculate a specific temperature value.Technician B says that resistance values on a typical NTC type thermister range between 50 kilo-ohms and 100 kilo-ohms.Who is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B

Question 5

Which of the following is NOT a solid state component?

Accepted Answer

A)  Transistor 
B)  Diode 
C)  Solenoid 
D)  Zener diode 
A)  Transistor 
B)  Diode 
C)  Solenoid 
D)  Zener diode

Question 6

Which of the following best explains how Doppler-effect is used to determine relative velocity?

Accepted Answer

A)  Analysis of radiated light waves 
B)  Frequency shift analysis 
C)  Bouncing sonar signals 
D)  Measuring amplitude deterioration 
A)  Analysis of radiated light waves 
B)  Frequency shift analysis 
C)  Bouncing sonar signals 
D)  Measuring amplitude deterioration

Question 7

Which of the following sensors could use an inductive pulse generator principle?

Accepted Answer

A)  wheel speed sensor 
B)  tailshaft speed sensor 
C)  engine speed sensor 
D)  all of the above 
A)  wheel speed sensor 
B)  tailshaft speed sensor 
C)  engine speed sensor 
D)  all of the above

Question 8

How many bits are there in one byte?

Accepted Answer

A)  2 
B)  8 
C)  256 
D)  512 
A)  2 
B)  8 
C)  256 
D)  512

Question 9

Which of the following solid state devices can be used to function in much the same way that a relay does?

Accepted Answer

A)  diode 
B)  transistor 
C)  thermistor 
D)  LED 
A)  diode 
B)  transistor 
C)  thermistor 
D)  LED

Question 10

A fixed frequency signal in which the percentage of ON time can be varied is known as:

Accepted Answer

A)  sine wave 
B)  pulse width modulation 
C)  frequency modulation 
D)  3-Phase AC 
A)  sine wave 
B)  pulse width modulation 
C)  frequency modulation 
D)  3-Phase AC

Question 11

What electrical operating principle is used by a 'non-contact' throttle position sensors?

Accepted Answer

A)  thermister 
B)  potentiometer 
C)  variable capacitance 
D)  Hall-effect 
A)  thermister 
B)  potentiometer 
C)  variable capacitance 
D)  Hall-effect

Question 12

What hardware component within a vehicle ECU performs arithmetic and logic processing?

Accepted Answer

A)  RAM 
B)  ROM 
C)  PROM 
D)  CPU 
A)  RAM 
B)  ROM 
C)  PROM 
D)  CPU

Question 13

What has to be done to a semiconductor material before it can be used in a solid state device?

Accepted Answer

A)  Purified 
B)  Doped 
C)  Decomposed 
D)  Activated 
A)  Purified 
B)  Doped 
C)  Decomposed 
D)  Activated

Question 14

A NTC type thermister is supplied with V-Ref.What will happen to signal voltage when temperature goes up?

Accepted Answer

A)  no change 
B)  increases 
C)  decreases 
D)  none of the above 
A)  no change 
B)  increases 
C)  decreases 
D)  none of the above

Question 15

Which type of diode can be used in a digital display window?

Accepted Answer

A)  light emitting diode 
B)  zener diode 
C)  small signal diode 
D)  photo diode 
A)  light emitting diode 
B)  zener diode 
C)  small signal diode 
D)  photo diode

Question 16

Technician A says that most vehicle microprocessors run on voltages higher than the usual 12-volt chassis voltage system.Technician B says that the rated processing frequency of a CPU is known as its clock speed.Who is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B

Question 17

What type of sensor can be used to signal pressure values in truck electronic systems?

Accepted Answer

A)  thermister 
B)  potentiometer 
C)  variable capacitance 
D)  inductive pulse generator 
A)  thermister 
B)  potentiometer 
C)  variable capacitance 
D)  inductive pulse generator

Question 18

What is the common value used as reference voltage (V-Ref)in truck chassis electronics?

Accepted Answer

A)  1 V 
B)  5 V 
C)  12.6 V 
D)  13.8-14.2 V 
A)  1 V 
B)  5 V 
C)  12.6 V 
D)  13.8-14.2 V

Question 19

How many different states can be expressed by one byte of data?

Accepted Answer

A)  2 
B)  8 
C)  256 
D)  512 
A)  2 
B)  8 
C)  256 
D)  512

Question 20

Which of the following is a collision mitigation system (CMS)designed to perform?

Accepted Answer

A)  detect objects in front of and at the sides of a truck 
B)  evaluate potential danger from other vehicles 
C)  actuate brakes 
D)  all of the above 
A)  detect objects in front of and at the sides of a truck 
B)  evaluate potential danger from other vehicles 
C)  actuate brakes 
D)  all of the above

Exam 6: Fundamentals of Electronics and Computers

What is the amplification capacity of a typical transistor?

What type of transistor can be used in an ECU to switch actuators?

Which of the following components would likely use a Zener diode in a truck electrical circuit?

Which of the following is NOT a solid state component?

Which of the following best explains how Doppler-effect is used to determine relative velocity?

Which of the following sensors could use an inductive pulse generator principle?

How many bits are there in one byte?

Which of the following solid state devices can be used to function in much the same way that a relay does?

A fixed frequency signal in which the percentage of ON time can be varied is known as:

What electrical operating principle is used by a 'non-contact' throttle position sensors?

What hardware component within a vehicle ECU performs arithmetic and logic processing?

What has to be done to a semiconductor material before it can be used in a solid state device?

A NTC type thermister is supplied with V-Ref.What will happen to signal voltage when temperature goes up?

Which type of diode can be used in a digital display window?

Technician A says that most vehicle microprocessors run on voltages higher than the usual 12-volt chassis voltage system.Technician B says that the rated processing frequency of a CPU is known as its clock speed.Who is correct?

What type of sensor can be used to signal pressure values in truck electronic systems?

What is the common value used as reference voltage (V-Ref)in truck chassis electronics?

How many different states can be expressed by one byte of data?

Which of the following is a collision mitigation system (CMS)designed to perform?

Introduction to Servicing Heavy-Duty Trucks

Shop Safety and Operations

Tools and Fasteners

Preventive Maintenance Program

Fundamentals of Electricity

Batteries

Charging Systems

Cranking Systems

Chassis Electrical Circuits

Diagnosis and Repair of Electronic Circuits

Multiplexing

Hydraulics

Clutches

Standard Transmissions

Standard Transmission Servicing

Torque Converters

Automatic Transmissions

Automatic Transmission Maintenance

Electronically Automated Standard Transmissions

Electronically Controlled Automatic Transmissions Ecats

Driveshaft Assemblies

Heavy-Duty Truck Axles

Heavy-Duty Truck Axle Service and Repair

Steering and Alignment

Suspension Systems

Wheels and Tires

Truck Brake Systems

Hydraulic Brakes and Air-Over-Hydraulic Brake Systems

Abs and Ebs

Air Brake Servicing

Vehicle Chassis Frame

Heavy-Duty Truck Trailers

Fifth Wheels and Coupling Systems

Heavy-Duty Heating, ventilation, and Air Conditioning Systems

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