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4rth Year Diesel Apprentice Classes > Final Test Study > Flashcards

Final Test Study Flashcards

1
Q

During the disengagement process, the clutch release levers move the clutch release bearing.
True
False

A

False

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2
Q

An engine drive uses the spring controlled centrifugal clutch so as to allow for engine idling.
True
False

A

True

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3
Q

Flywheel, clutch housing and transmission housing face runout checks are conducted to ensure components will be parallel to one another during operation.
True
False

A

True

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4
Q

Which device allows a driveline to change in length during operation?
a. full round yoke
b. universal joint
c. half round yoke
d. slip joint

A

d. slip joint

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5
Q

Universal joint working angles are not affected by driveline speed.
True
False

A

False

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6
Q

A basic driveline configuration has one shaft. More complex driveline configurations use:
a. a single shaft
b. belts and pulleys
c. multiple shafts
d. chains and sprockets

A

c. multiple shafts

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7
Q

The gear pitch line is used to divide the following gear tooth areas:
a. heel and toe
b. drive and coast
c. face and flank
d. fillet and profile

A

c. face and flank

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8
Q

When installed between a drive and driven gear, an idler gear affects speed and torque changes between the two gears.
True
False

A

False. Changes rotating direction.

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9
Q

Which of the following gear ratios would be a reduction gear ratio?
a) 0.10:1
b) 1.00:1
c) 10.00:1
d) 1.00:2

A

c. 10.00:1

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10
Q

Multiple countershaft transmissions use several housings. These housings are kept in alignment through the use of:
a) shouldered bolts.
b) precise doweling.
c) tapered plugs.
d) floating cap screws.

A

b) precise doweling.

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11
Q

The formula for determining gear ratio is the number of teeth on the driven gear divided by the number of teeth on the drive gear.
True
False

A

True

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12
Q

The input shaft and gear:
a) deliver torque to the mainshaft gears.
b) are supported on bushings.
c) are driven by the clutch discs.
d) utilize a lip seal for sealing.

A

c) are driven by the clutch discs.

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13
Q

The three speed auxiliary section provides:
a) 15 gear speeds.
b) 18 gear speeds.
c) 13 gear speeds.
d) 12 gear speeds.

A

d) 12 gear speeds.

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14
Q

Why are lithium ion batteries desirable for electric hybrid applications?
a) high discharge rates and low storage capacity.
b) high discharge rates and high storage capacity.
c) Low discharge rates and high storage capacity.
d) low discharge rates and low storage capacity.

A

c) Low discharge rates and high storage capacity.

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15
Q

The purpose of the range, splitter and deep reduction cylinders is to:
a) transmit the gearshift lever actions to shift the auxiliary section sliding clutches.
b) use the air signal to shift the main section sliding clutches.
c) use the air signal to shift the auxiliary section sliding gears.
d) use the air signal to shift the auxiliary section sliding clutches.

A

d) use the air signal to shift the auxiliary section sliding clutches.

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16
Q

The air filter/regulator generally regulates air to ________________ pressure.
a) 18 psi to 26 psi.
b) 58 psi to 63 psi.
c) 97 psi to 103 psi.
d) 120 psi to 130 psi.

A

b) 58 psi to 63 psi.

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17
Q

The range cylinder is a double acting cylinder that uses a spring to hold it in the low position and air to shift it into the high position.
True
False

A

False

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18
Q

The transmission shift controller contains:
a) electronic control unit and dash display.
b) electronic control unit and operator shift console.
c) operator shift console and dash display.
d) main section electric shifter and range/splitter assemblies.

A

b) electronic control unit and operator shift console.

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19
Q

Leaking output shaft seals, worn output shaft bearings and broken synchronizer pins are often an indication of a problem with the:
a) engine and transmission mounts.
b) clutch systems.
c) driveline.
d) shift mechanism.

A

c) driveline

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20
Q

Premature input shaft bearing failure or slip out in direct gear is often an indication of a problem with the:
a) engine and transmission mounts.
b) clutch systems.
c) driveline.
d) shift mechanism.

A

a) engine and transmission mounts.

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21
Q

A visual inspection process is an integral part of the transmission disassembly procedure.
True
False

A

True

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22
Q

When establishing the buffer zone around a diesel electric hybrid, what is the recommended distance the cones be placed from each corner of the vehicle?
a) 0.5m
b) 1.0m
c) 1.5m
d) 2.0m

A

b) 1.0m

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23
Q

Regulated air is applied to keep the range in low and the splitter in low.
True
False

A

True

24
Q

What medium of stored energy is contained within an accumulator?
a) gaseous
b) fluid
c) fluid and gas
d) plasma

A

c) fluid and gas

25
Q

The indicator light for the power takeoff system is activated by an engagement switch located in the shift valve.
True
False

A

False

26
Q

What device does a full time transfer case use to prevent driveline windup?
a) planetary gear set.
b) typical differential assembly
c) limited slip clutch pack
d) windup clutch

A

a) planetary gear set.

27
Q

On the air actuated power takeoff system, what is the air routed through before going to the air valve?
a) pressure protection valve
b) pressure regulator valve
c) flow control valve
d) the shift cylinder

A

a) pressure protection valve

28
Q

PTO backlash must be measured between:
a) the PTO input gear and the PTO output gear.
b) the PTO input gear and the idler.
c) the PTO input gear and the transmission drive gear.
d) the transmission drive gear and the transmission input gear.

A

c) the PTO input gear and the transmission drive grear.

29
Q

The gross combination weight rating refers to the:
a) amount of weight each axle can carry.
b) combined gross axle weight ratings for a vehicle.
c) total combined gross axle weight ratings for a vehicle and it’s trailers.
d) amount a vehicle weighs empty.

A

c) total combined gross axle weight ratings for a vehicle and it’s trailers.

30
Q

The input shaft drives the helical drive gear through a set of splines.
True
False

A

False

31
Q

Which components are attached to the drive axle housing?
a) suspension components.
b) wheels tires and hubs.
c) carrier housing
d) all of the above

A

d) all of the above

32
Q

The temperature at which the truck should be shut down and the cause of the excessive heat established and repaired is:
a) 160F
b) 220F
c) 250F
d) 275F

A

c) 250F

33
Q

When checking pinion bearing preload using a cord and a spring scale, record the reading required to start the assembly rolling.
True
False

A

False, force required to keep it rolling.

34
Q

On a carrier assembly, if a thrust screw is used, mark the spot with the most ________________ the thrust screw side of the bevel gear.
a) back face runout toward.
b) back face runout away.
c) radial towards.
d) radial away from.

A

a) back face runout toward.

35
Q
  1. What type of controls regulate the flow of air conditioning refrigerant or heater coolant without driver input?
    a) active
    b) passive
    c) supplemental
    d) mandatory
A

b) passive

36
Q
  1. The maximum allowable filling limit for any refrigerant container is:
    a) 65% of its internal volume
    b) 75% of its internal volume
    c) 80% of its internal volume
    d) 90% of its internal volume
A

c) 80% of its internal volume

37
Q
  1. From what electrical terminal does the low beam headlight circuit receive electrical power?
    a) ignition switched terminal.
    b) constant power terminal
    c) safety power terminal.
    d) high power terminal
A

b) constant power terminal

38
Q
  1. What component prevents all warning lights from illuminating when one warning light is illuminated?
    a) fusible link
    b) buzzer
    c) relays
    d) isolating diodes
A

d) isolating diodes

39
Q
  1. A hall effect sensor sends an amperage signal to the ammeter by:
    a) measuring the current along the shunt.
    b) using an integrated circuit amplifier.
    c) reversing the current flow
    d) grounding the signal from the alternator.
A

b) using an integrated circuit amplifier.

40
Q
  1. High wear of brass bushings would be indicated in an oil analysis as high ppm of:
    a) copper and zinc
    b) copper and tin
    c) brass and copper
    d) tin and silver
A

a) copper and zinc

41
Q
  1. A metal fracture surface that indicates several beach marks and a final fracture area is best described as:
    a) a ductile fracture.
    b) a fatigue fracture.
    c) a brittle fracture.
    d) a beach fracture
A

b) a fatigue fracture

42
Q
  1. Prior to inspection, metal specimens taken from a failure must be thoroughly cleaned, preferably with a power wire wheel.
    True
    False
A

False

43
Q

35.The three major components of a power steering system are the:
a) pump, connecting lines and reservoir
b) steering gear, connecting lines and reservoir
c) relief valve, connecting lines and pump.
d) reservoir, pump and steering gear.

A

d) reservoir, pump and steering gear.

44
Q
  1. In a rack and pinion steering system, the movement of the wheels is controlled through the upper steering arm.
    True
    False
A

False

45
Q
  1. After installing new king pin bushings you must ream the new bushings out.
    True
    False
A

False

46
Q
  1. Which of the following alignment measurements or angles are adjustable?
    a) toe and caster
    b) toe out on turns
    c) kingpin inclination
    d) camber and kingpin inclination
A

a) toe and caster

47
Q

42) A cross tube that has been bent due to a collision with an obstacle in off road conditions will affect which alignment measurements or angles?
a) caster
b) camber
c) toe out on turns
d) toe

A

d) toe

48
Q
  1. When viewed from the front of the vehicle, both front tires appear to have positive camber. The tires are tilted:
    a) in at the top.
    b) out at the top
    c) forward.
    d) rearward
A

b) out at the top

49
Q
  1. The order in which the ECU instructs the modulator valve to control air pressure is:
    a) hold, reapply and exhaust.
    b) reapply, exhaust and hold.
    c) exhaust, hold and reapply.
    d) exhaust, reapply and hold.
A

c) exhaust, hold and reapply.

50
Q
  1. The function of an ABS modulator valve assembly include:
    a) transmitting signals to the ECU
    b) receiving signals from the ECU
    c) transmitting signals to the wheel speed sensors.
    d) receiving signals from the wheel speed sensors.
A

b) receiving signals from the ECU

51
Q
  1. R-134A refrigerant, when held at a gauge pressure of 1.9 psi, turns into a vapor at at temperature of:
    a) -30F
    b) -10F
    c) 30F
    d) 70F
A

b) -10F

52
Q
  1. When the air conditiong system contains a fixed expansion tube and an accumulator, the thermostatic switch may be replaced with a:
    a) ambient temperature switch.
    b) high pressure switch.
    c) clutch cycling switch.
    d) Binary switch
A

c) clutch cycling switch

53
Q
  1. The Binary switch acts like a:
    a) low pressure switch
    b) high pressure switch
    c) ambient temperature switch
    d) all of the above
A

d) all of the above

54
Q
  1. The maximum allowable filling limit for any refrigerant container is:
    a) 65%
    b) 75%
    c) 80%
    d) 90%
A

c) 80%

55
Q
  1. What percentage of ozone is concentrated in the stratosphere?
    a) 40%
    b) 70%
    c) 90%
    d) 100%
A

c) 90%

56
Q
  1. R134a refrigerant has an ODP of:
    a) 0
    b) 2
    c) 4
    d) 8
A

a) 0

4rth Year Diesel Apprentice Classes (26 decks)

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