Trades & Technology - Automotive; Pre Quiz 9

List three primers used to prevent corrosion and where they should be used.

Weld-through coatings: One product that stands out from the other primers is weld- through coatings. These are special zinc-rich primers designed to protect the microscopic voids that form from the welding heat on the inside of the flanges and mating surfaces. These surfaces cannot be reached to properly treat after the panels have been welded together therefore they must be treated with the weld-through coating prior to assembling them.
Self-etching primers: Self-etch primers may be more desirable to use in areas where access is difficult to perform the scrubbing and cleansing tasks that precede the application of the material. They contain phosphoric etching material that neutralizes and etches the surface as it dries thus eliminating the need for using the metal etching chemicals and conversion coatings prior to its application. They are also a zinc-rich material which affords excellent corrosion resistance.
Epoxy primers: The most universal primer available is the two-part epoxy primer, commonly referred to as a 2-k product. It can be applied over a properly prepared or etched bare steel and aluminum substrate and nearly every imaginable surface. When applied over a painted surface it need only be cleaned and abraded first. When applying it over steel or aluminum, the surface must first be abraded and chemically treated and etched.

2

Heat intensity is measured in _______________

3

Answer the following statements true (T) or false (F)

4

________ brakes are only used on heavy-duty trucks.

5

When working with hand tools, always ________

6

The term valence ring applies to the outer ring on an atom.

7

Electrical disturbances or _________ are momentary changes in the signal.

8

Two technicians are discussing differentials. Technician A says that all differentials are vented. Technician B says that a clogged vent can cause the rear axle seal to leak. Which technician is correct?

9

Before system pressure and duct temperature tests, what items should be met?

10

What could be the problem if a noid light remains on (does not flash) with the engine cranking?

11

Technician A says use kerosene as a spray lube before resurfacing aluminum heads. Technician B says belt sanders are the best method for resurfacing aluminum heads. Who is right?

12

Technician A says that a stuck open thermostat can cause poor heater operation. Technician B says low coolant level can cause poor heater operation. Which technician is correct?

13

What is the purpose of an engine analyzer?

14

What was the highest average speed during any 30-minute time period?

15

Where dose glue overflow?

16

Where is the fuel-pressure regulator located on a vacuum-biased port fuel-injection system?

17

When the torsion bar twists, it changes the position of what?

18

Asbestosis is a disease caused by inhaling ____________________.

19

Clutch fluid level is checked at the ________

20

List the names of the largest auto manufacturers.

21

Valves can be checked for proper operation by using what test(s)?

22

Discuss and compare the advantages and disadvantages of electric and pneumatic tools.

23

What category of oil will work for all automotive gasoline engines currently in use?

24

An undeployed air bag is being replaced because the trim cover is cut. Technician A says it can be recovered. Technician B says it must be deployed before it is scrapped. Who is right?

25

An AC system is being checked for proper cooling.

26

If a gear with 20 teeth is driving a gear with 60 teeth, the gear ratio is ________.

27

ASE-Style Multiple Choice While having a discussion, Technician A says that the term rustout refers to corrosion that has had time to penetrate completely through the steel panel. Technician B says that rustout is an early stage of corrosion that has not penetrated the steel panel. Who is correct?

28

Static electricity can build up on the technician's body. Before handling electronic components discharge the static charge by _______

29

While having a discussion, Technician A says that when charging system voltage is low and accessories are loading the system, the regulator increases the AC generator current output. Technician B says that if system voltage is normal and there is a heavy accessory load, the AC generator will run the accessories with little drain on the battery. Who is correct?

30

What questions should a buyer ask the seller?

31

Two technicians are discussing bench bleeding a master cylinder. Technician A says that the front (nose end) of the master cylinder should be bled first. Technician B says that rear (brake pedal end) should be bled first. Which technician is correct?

32

A stuck open thermostat can cause ________

33

What component pulses the fuel injector on most vehicles?

34

Technician A says that a minor overhaul includes performing a valve job. Technician B says that a minor overhaul includes replacing the pistons. Which technician is correct?

35

Why shouldn't a service technician depress a brake pedal all the way down when bleeding brakes?

36

Technician A says that current is created in the stator windings of an alternator. Technician B says that the voltage regulator controls the current flow through the rotor. Who is right?

37

Technician A says the gears in a planetary gearset are in constant mesh. Technician B says a planetary gearset has a ring gear and pinion gears. Which technician is correct?

38

What part should be removed to test cylinder compression on a diesel engine?

39

Current is defined as the flow of electrons and is measured in:

40

While discussing power recirculating ball steering gear diagnosis:

41

Technician A says that when welding steel, a welder needs to have respiratory protection. Technician B says that safety data sheets have the local fire marshal’s phone number on them. Who is correct?

42

The minimum thickness of a brake rotor is 29.31 millimeters. What is this to the nearest thousandth of an inch?

43

To divide decimals, make the divisor a whole number by moving the decimal point all the way to the ____________________.

44

Excessive chassis oscillations may result in loss of steering control.

45

It was clear after the meeting at Mother Bethel Church lead by James Forten in the early 1800s that __________

46

Setting a type B DTC will also trigger a freeze frame

47

The voltage regulator controls the current through the ________

48

How can you identify high-voltage circuits in an electric drive vehicle?

49

A MAP sensor is being tested. Technician A says that many MAP sensors also act as a barometric pressure sensor when the ignition switch is first turned on. Technician B says on many MAP sensors the signal voltage should increase when the vacuum at the sensor decreases. Which technician is correct?

50

Technician A says that the Honda Multimatic CVT does not use a torque converter. Technician B says that the Multimatic CVT provides better high-speed passing performance than a manual transmission or conventional automatic transmission. Which technician is correct?

51

Recharging the battery pack in a BEV normally takes several ____.

52

To use a transistor as a simple solid-state relay, what conditions must occur?

53

Most conventional (mineral) oil is made from what API group?

54

Describe the booster diaphragm in vacuum booster construction.

55

After a TP sensor has been tested using the MIN/MAX function on a DMM, a reading of zero volts is displayed. Which of these does this reading indicate?

56

A torque converter should be checked by a technician for all of the following EXCEPT ________.

57

All batteries should be in a secure bracket that is bolted to the vehicle to prevent physical damage to the battery

58

Use the following engine dimensions to calculate the compression ratio

59

How much fuel should be supplied to the engine every 30 seconds?

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Trades & Technology - Automotive; Pre Quiz 9

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