Question 1

When attempting to diagnose instrument cluster unit (ICU)malfunctions what should you do first?

Accepted Answer

A)  replace the module 
B)  use a testlight to locate the problem 
C)  use a DMM to locate the problem 
D)  access the data bus for DTCs 
A)  replace the module 
B)  use a testlight to locate the problem 
C)  use a DMM to locate the problem 
D)  access the data bus for DTCs D

Question 2

Technician A says that halogen lamps produce more light per unit of energy consumed with the result that they are more efficient.Technician B says that halogen lamps run at much higher temperatures than comparable incandescent bulbs.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 C

Question 3

On a standard SAE relay,which terminal should be the common terminal?

Accepted Answer

A)  1 (86) 
B)  2 (85) 
C)  3 (30) 
D)  5 (87) 
A)  1 (86) 
B)  2 (85) 
C)  3 (30) 
D)  5 (87) C

Question 4

What is another name for a high intensity discharge (HID)headlamp?

Accepted Answer

A)  tungsten lamp 
B)  halogen lamp 
C)  neon lamp 
D)  xenon lamp 
A)  tungsten lamp 
B)  halogen lamp 
C)  neon lamp 
D)  xenon lamp

Question 5

How much voltage is required to ignite the arc of a HID headlamp?

Accepted Answer

A)  20,000 volts 
B)  85 volts 
C)  12 volts 
D)  5 volts 
A)  20,000 volts 
B)  85 volts 
C)  12 volts 
D)  5 volts

Question 6

When selecting solder to splice copper wire,which would be correct?

Accepted Answer

A)  silver solder 
B)  rosin core 
C)  acid core 
D)  pure lead solder 
A)  silver solder 
B)  rosin core 
C)  acid core 
D)  pure lead solder

Question 7

In a typical truck,four horizontal headlight system where would the double filament headlamps be located?

Accepted Answer

A)  both on inside 
B)  both on outside 
C)  one on driver outside,one on curbside inside 
D)  one on driver inside,one on curbside outside 
A)  both on inside 
B)  both on outside 
C)  one on driver outside,one on curbside inside 
D)  one on driver inside,one on curbside outside

Question 8

What federal legislation limits the maximum brightness of truck headlamps?

Accepted Answer

A)  FMVSS 101 
B)  FMVSS 104 
C)  FMVSS 108 
D)  FMVSS 121 
A)  FMVSS 101 
B)  FMVSS 104 
C)  FMVSS 108 
D)  FMVSS 121

Question 9

Technician A says that voltage drop is the effective measurement of resistance in a circuit.Technician B says that voltage drop is a less effective means of locating high resistances in a circuit than measuring resistance with an ohmmeter.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 10

When comparing the safety of LEDs versus incandescent lamps used as brake lights,which of the following is correct?

Accepted Answer

A)  LEDs require more maintenance 
B)  cost of LEDs is greater over lifetime of chassis 
C)  LEDs illuminate more rapidly 
D)  LED tail lights consume more current 
A)  LEDs require more maintenance 
B)  cost of LEDs is greater over lifetime of chassis 
C)  LEDs illuminate more rapidly 
D)  LED tail lights consume more current

Question 11

If a steering column mounted stalk switch uses 'smart' technology,what does it produce to signal status changes?

Accepted Answer

A)  direct electro-mechanical signals 
B)  sends command signals to a control module 
C)  energizes dedicated hard wire circuits 
D)  grounds-out live wires 
A)  direct electro-mechanical signals 
B)  sends command signals to a control module 
C)  energizes dedicated hard wire circuits 
D)  grounds-out live wires

Question 12

What is visible light known as?

Accepted Answer

A)  electrons 
B)  protons 
C)  photons 
D)  neutrons 
A)  electrons 
B)  protons 
C)  photons 
D)  neutrons

Question 13

Technician A says that HID headlamps frequently fail because they are more vulnerable to road shock and vibration than halogen filament lamps.Technician B says that when HID headlamps fail,it is usually due to frequent cycling.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 14

In a typical incandescent bulb,what is the filament surrounded by?

Accepted Answer

A)  pure oxygen 
B)  pure nitrogen 
C)  inert gas 
D)  vacuum 
A)  pure oxygen 
B)  pure nitrogen 
C)  inert gas 
D)  vacuum

Question 15

Technician A says that the typical current draw of headlamps is around 10 amps.Technician B says that headlamp resistance should measure approximately 10 ohms in a properly functioning headlamp.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 16

If a driver has 20/20 vision,how well is it estimated that the driver can see under night driving conditions?

Accepted Answer

A)  20/20 
B)  20/30 
C)  20/40 
D)  20/50 
A)  20/20 
B)  20/30 
C)  20/40 
D)  20/50

Question 17

Which medium do night visioning electronic systems such as Bendix XVision use to produce imaging?

Accepted Answer

A)  doppler radar 
B)  infra-red 
C)  ultra-violet 
D)  microwave 
A)  doppler radar 
B)  infra-red 
C)  ultra-violet 
D)  microwave

Question 18

Which American Trucking Association,Technology and Maintenance Council (TMC)recommended practice (RP)outlines the placement of instrument cluster gauges?

Accepted Answer

A)  RP 401 
B)  RP 285 
C)  RP 121 
D)  RP 108 
A)  RP 401 
B)  RP 285 
C)  RP 121 
D)  RP 108

Question 19

What produces the light emitted by a xenon headlamp?

Accepted Answer

A)  tungsten filament 
B)  halogen filament 
C)  arc ignited across inert gas 
D)  infrared gas 
A)  tungsten filament 
B)  halogen filament 
C)  arc ignited across inert gas 
D)  infrared gas

Question 20

When an ATA standard seven-wire trailer cord is properly connected,what color wire is used for the trailer brake lights?

Accepted Answer

A)  white 
B)  blue 
C)  red 
D)  black 
A)  white 
B)  blue 
C)  red 
D)  black

Exam 10: Chassis Electrical Circuits

When attempting to diagnose instrument cluster unit (ICU)malfunctions what should you do first?

Technician A says that halogen lamps produce more light per unit of energy consumed with the result that they are more efficient.Technician B says that halogen lamps run at much higher temperatures than comparable incandescent bulbs.Who is correct?

On a standard SAE relay,which terminal should be the common terminal?

What is another name for a high intensity discharge (HID)headlamp?

How much voltage is required to ignite the arc of a HID headlamp?

When selecting solder to splice copper wire,which would be correct?

In a typical truck,four horizontal headlight system where would the double filament headlamps be located?

What federal legislation limits the maximum brightness of truck headlamps?

Technician A says that voltage drop is the effective measurement of resistance in a circuit.Technician B says that voltage drop is a less effective means of locating high resistances in a circuit than measuring resistance with an ohmmeter.Who is correct?

When comparing the safety of LEDs versus incandescent lamps used as brake lights,which of the following is correct?

If a steering column mounted stalk switch uses 'smart' technology,what does it produce to signal status changes?

What is visible light known as?

Technician A says that HID headlamps frequently fail because they are more vulnerable to road shock and vibration than halogen filament lamps.Technician B says that when HID headlamps fail,it is usually due to frequent cycling.Who is correct?

In a typical incandescent bulb,what is the filament surrounded by?

Technician A says that the typical current draw of headlamps is around 10 amps.Technician B says that headlamp resistance should measure approximately 10 ohms in a properly functioning headlamp.Who is correct?

If a driver has 20/20 vision,how well is it estimated that the driver can see under night driving conditions?

Which medium do night visioning electronic systems such as Bendix XVision use to produce imaging?

Which American Trucking Association,Technology and Maintenance Council (TMC)recommended practice (RP)outlines the placement of instrument cluster gauges?

What produces the light emitted by a xenon headlamp?

When an ATA standard seven-wire trailer cord is properly connected,what color wire is used for the trailer brake lights?

Introduction to Servicing Heavy-Duty Trucks

Shop Safety and Operations

Tools and Fasteners

Preventive Maintenance Program

Fundamentals of Electricity

Fundamentals of Electronics and Computers

Batteries

Charging Systems

Cranking Systems

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

Filters