AST Level 1 Learning Path
In an oxyacetylene welding torch the acetylene hose is colored _____.
A. red
B. blue
C. green
D. yellow - CORRECT ANSWER-A. red
The standard flame is said to be a(n) ____.
A. torch flame
B. neutral flame
C. oxidizing flame
D. carburizing flame - CORRECT ANSWER-B. neutral flame
____ is a method of welding in which a nonferrous metal with a lower melting point
(temperature) than that of the base metal is melted without melting the base metal.
A. Pressure welding
B. Vertical welding
C. Undercutting
D. Brazing - CORRECT ANSWER-D. Brazing
What tool can be used to make measurements within 0.0001 of an inch?
A. micrometer
B. vernier caliper
C. dial caliper
D. machinist's rule - CORRECT ANSWER-A. micrometer
Check the calibration of precision measuring tools:
A. annually.
B. with each use.
C. only after a great deal of use.
D. never. - CORRECT ANSWER-B. with each use.
The brushes are used to transfer electrical power between __________.
A. The solenoid and the field coils
B. The commutator and the segments
C. Field coils and the armature
D. The armature and the solenoid - CORRECT ANSWER-C. Field coils and the
armature
Technician A uses a soft-face hammer to tap a bearing into its bore. Technician B
uses a ball-peen hammer and brass drift. Who is correct? - CORRECT ANSWER-both
A class C type fire extinguisher can be used on what type of fires?
A. rubber
B. electrical wiring
C. gasoline
D. all answers are correct - CORRECT ANSWER-B. electrical wiring
,The material safety data sheets (MSDS or SDS) for most transmission fluids indicate
that there are what safety hazards when working with new fluid?
A. Possible skin cancer
B. Possible exposure to HIV
C. Possible swelling of spots exposed to the fluid
D. Possible skin reaction - CORRECT ANSWER-D. Possible skin reaction
Carbon monoxide is an odourless but deadly gas. (T/F) - CORRECT ANSWER-true
A(n) ____ is a hand valve that isolates the tank pressure from shop line pressure.
A. air tank shutoff valve
B. automatic unloader
C. compressor drain valve
D. pressure switch - CORRECT ANSWER-air tank shutoff valve
When installing a ball bearing that is a press fit [tight] onto the main shaft, pressure
should be applied to the _____ race.
A. inner
B. outer
C. both "inner" and "outer"
D. neither "inner" nor "outer" - CORRECT ANSWER-A. inner
The ____ grinder is MOST-Likely to be used with mounted points and carbide burrs for
a variety of applications, such as weld cleaning, deburring, blending, and smoothing.
A. cut off grinder
B. small wheel grinder
C. angle grinder
D. die grinder - CORRECT ANSWER-D. die grinder
____ affects the base metal penetration depth, the speed at which the wire is melted,
arc stability, and the amount of weld spatter.
A. Plug weld
B. Flat welding
C. Plasma arc cutting
D. Welding current - CORRECT ANSWER-D. Welding current
____ is used to provide anticorrosion protection to weld zones.
A. Weld-through primer
B. Self-etching primer
C. Sealant
D. Undercoat - CORRECT ANSWER-A. Weld-through primer
A ____ on the back of a weld is an indication of good weld penetration.
A. plug weld
B. burn mark
C. stitch weld
D. weld face - CORRECT ANSWER-B. burn mark
____ is an electric arc welding process that uses a tubular wire with flux inside.
A. Pressure welding
B. Vertical welding
C. Flux-cored arc welding
D. Plasma arc cutting - CORRECT ANSWER-C. Flux-cored arc welding
When lubrication of a fastener is recommended prior to installation, ______.
,A. add the lubricant to the bolt hole
B. apply the lubricant to the bolt threads
C. both "add the lubricant to the bolt hole" and "apply the lubricant to the bolt threads"
D. neither "add the lubricant to the bolt hole" nor "apply the lubricant to the bolt
threads" - CORRECT ANSWER-B.
apply the lubricant to the bolt threads
Torque-to-yield bolts have the same yield point as all other bolts. - CORRECT
ANSWER-false
To remove a broken stud, you could use a:
A. screw extractor.
B. tap drill.
C. Helicoil.
D. Tap-Loc insert. - CORRECT ANSWER-A. screw extractor.
Brake fluid and chlorinated solvents [Brakekleen] can be drained into the shop's waste
oil container. - CORRECT ANSWER-false
When would a torque angle gauge be used?
A. after tightening to check for correct torque
B. after tightening to a specified torque
C. when using brass fasteners
D. only when installing aluminum components - CORRECT ANSWER-B. after
tightening to a specified torque
All brake fluids are hygroscopic; that is, they readily absorb water. - CORRECT
ANSWER-true
Which statement best describes fuel lines and fittings?
A. Threaded fittings may also require an O-ring.
B. Aluminum or copper may be used to replace steel tubing.
C. Nylon is never used for fuel line construction.
D. Special tools are needed to service all types of fuel line quick connections. -
CORRECT ANSWER-A. Threaded fittings may also require an O-ring.
What tool is NOT used for fabricating new brake lines.
A. SAE flaring tool
B. ISO flaring tool
C. tubing cutter/reamer
D. tubing hone - CORRECT ANSWER-D.
tubing hone
Technician A checks V-belt tension by pressing his thumb firmly on the longest straight
span of the belt and measuring the amount of deflection. Technician B uses a belt
tension gauge. Who is correct? - CORRECT ANSWER-both
What can cause a belt to overcure?
A. leaking oil
B. scale
C. excessive cold
D. excessive heat - CORRECT ANSWER-D.
excessive heat
, When troubleshooting OBD-II systems, why is it important to check service history and
service publications?
A. to ensure the proper adapter is used for the vehicle
B. to check for a TSB or other service alert with the necessary repair information
C. to confirm diagnostic group
D. to compare input sensor and actuator data - CORRECT ANSWER-B.
to check for a TSB or other service alert with the necessary repair information
What information is often needed when ordering parts for an automatic
transmission/transaxle?
A.
Number of bolts used on the pan
B.
The diameter of the torque converter
C.
VIN/Tag number
D.
The length of the extension housing - CORRECT ANSWER-C.
VIN/Tag number
Which CV joint test should be performed to determine whether the CV joint boot needs
to be serviced?
A.
squeeze test
B.
chassis test
C.
balance test
D.
spin test - CORRECT ANSWER-A.
squeeze test
Which type of joint is NOT a constant velocity type joint?
A.
U-joint
B.
Rzeppa joint
C.
tripod joint
D.
double Cardan - CORRECT ANSWER-A.
U-joint
Technician A says the outer CV joints of FWD axle shafts are nine times more likely to
need replacement than the inner joints. Technician B says a worn cage or race can
cause a clicking sound during a turn. Who is correct? - CORRECT ANSWER-both
A flux, or magnetic field, is present around permanent magnets and current-carrying
wires. - CORRECT ANSWER-true
Wire A has a diameter of 0.032 inches. Wire B has a diameter of 0.102 inches and an
AWG rating of 10. Which of these is MOST likely to be the AWG rating of Wire A?
A. 14 ga.
B. 12 ga.
C. 5 ga.
In an oxyacetylene welding torch the acetylene hose is colored _____.
A. red
B. blue
C. green
D. yellow - CORRECT ANSWER-A. red
The standard flame is said to be a(n) ____.
A. torch flame
B. neutral flame
C. oxidizing flame
D. carburizing flame - CORRECT ANSWER-B. neutral flame
____ is a method of welding in which a nonferrous metal with a lower melting point
(temperature) than that of the base metal is melted without melting the base metal.
A. Pressure welding
B. Vertical welding
C. Undercutting
D. Brazing - CORRECT ANSWER-D. Brazing
What tool can be used to make measurements within 0.0001 of an inch?
A. micrometer
B. vernier caliper
C. dial caliper
D. machinist's rule - CORRECT ANSWER-A. micrometer
Check the calibration of precision measuring tools:
A. annually.
B. with each use.
C. only after a great deal of use.
D. never. - CORRECT ANSWER-B. with each use.
The brushes are used to transfer electrical power between __________.
A. The solenoid and the field coils
B. The commutator and the segments
C. Field coils and the armature
D. The armature and the solenoid - CORRECT ANSWER-C. Field coils and the
armature
Technician A uses a soft-face hammer to tap a bearing into its bore. Technician B
uses a ball-peen hammer and brass drift. Who is correct? - CORRECT ANSWER-both
A class C type fire extinguisher can be used on what type of fires?
A. rubber
B. electrical wiring
C. gasoline
D. all answers are correct - CORRECT ANSWER-B. electrical wiring
,The material safety data sheets (MSDS or SDS) for most transmission fluids indicate
that there are what safety hazards when working with new fluid?
A. Possible skin cancer
B. Possible exposure to HIV
C. Possible swelling of spots exposed to the fluid
D. Possible skin reaction - CORRECT ANSWER-D. Possible skin reaction
Carbon monoxide is an odourless but deadly gas. (T/F) - CORRECT ANSWER-true
A(n) ____ is a hand valve that isolates the tank pressure from shop line pressure.
A. air tank shutoff valve
B. automatic unloader
C. compressor drain valve
D. pressure switch - CORRECT ANSWER-air tank shutoff valve
When installing a ball bearing that is a press fit [tight] onto the main shaft, pressure
should be applied to the _____ race.
A. inner
B. outer
C. both "inner" and "outer"
D. neither "inner" nor "outer" - CORRECT ANSWER-A. inner
The ____ grinder is MOST-Likely to be used with mounted points and carbide burrs for
a variety of applications, such as weld cleaning, deburring, blending, and smoothing.
A. cut off grinder
B. small wheel grinder
C. angle grinder
D. die grinder - CORRECT ANSWER-D. die grinder
____ affects the base metal penetration depth, the speed at which the wire is melted,
arc stability, and the amount of weld spatter.
A. Plug weld
B. Flat welding
C. Plasma arc cutting
D. Welding current - CORRECT ANSWER-D. Welding current
____ is used to provide anticorrosion protection to weld zones.
A. Weld-through primer
B. Self-etching primer
C. Sealant
D. Undercoat - CORRECT ANSWER-A. Weld-through primer
A ____ on the back of a weld is an indication of good weld penetration.
A. plug weld
B. burn mark
C. stitch weld
D. weld face - CORRECT ANSWER-B. burn mark
____ is an electric arc welding process that uses a tubular wire with flux inside.
A. Pressure welding
B. Vertical welding
C. Flux-cored arc welding
D. Plasma arc cutting - CORRECT ANSWER-C. Flux-cored arc welding
When lubrication of a fastener is recommended prior to installation, ______.
,A. add the lubricant to the bolt hole
B. apply the lubricant to the bolt threads
C. both "add the lubricant to the bolt hole" and "apply the lubricant to the bolt threads"
D. neither "add the lubricant to the bolt hole" nor "apply the lubricant to the bolt
threads" - CORRECT ANSWER-B.
apply the lubricant to the bolt threads
Torque-to-yield bolts have the same yield point as all other bolts. - CORRECT
ANSWER-false
To remove a broken stud, you could use a:
A. screw extractor.
B. tap drill.
C. Helicoil.
D. Tap-Loc insert. - CORRECT ANSWER-A. screw extractor.
Brake fluid and chlorinated solvents [Brakekleen] can be drained into the shop's waste
oil container. - CORRECT ANSWER-false
When would a torque angle gauge be used?
A. after tightening to check for correct torque
B. after tightening to a specified torque
C. when using brass fasteners
D. only when installing aluminum components - CORRECT ANSWER-B. after
tightening to a specified torque
All brake fluids are hygroscopic; that is, they readily absorb water. - CORRECT
ANSWER-true
Which statement best describes fuel lines and fittings?
A. Threaded fittings may also require an O-ring.
B. Aluminum or copper may be used to replace steel tubing.
C. Nylon is never used for fuel line construction.
D. Special tools are needed to service all types of fuel line quick connections. -
CORRECT ANSWER-A. Threaded fittings may also require an O-ring.
What tool is NOT used for fabricating new brake lines.
A. SAE flaring tool
B. ISO flaring tool
C. tubing cutter/reamer
D. tubing hone - CORRECT ANSWER-D.
tubing hone
Technician A checks V-belt tension by pressing his thumb firmly on the longest straight
span of the belt and measuring the amount of deflection. Technician B uses a belt
tension gauge. Who is correct? - CORRECT ANSWER-both
What can cause a belt to overcure?
A. leaking oil
B. scale
C. excessive cold
D. excessive heat - CORRECT ANSWER-D.
excessive heat
, When troubleshooting OBD-II systems, why is it important to check service history and
service publications?
A. to ensure the proper adapter is used for the vehicle
B. to check for a TSB or other service alert with the necessary repair information
C. to confirm diagnostic group
D. to compare input sensor and actuator data - CORRECT ANSWER-B.
to check for a TSB or other service alert with the necessary repair information
What information is often needed when ordering parts for an automatic
transmission/transaxle?
A.
Number of bolts used on the pan
B.
The diameter of the torque converter
C.
VIN/Tag number
D.
The length of the extension housing - CORRECT ANSWER-C.
VIN/Tag number
Which CV joint test should be performed to determine whether the CV joint boot needs
to be serviced?
A.
squeeze test
B.
chassis test
C.
balance test
D.
spin test - CORRECT ANSWER-A.
squeeze test
Which type of joint is NOT a constant velocity type joint?
A.
U-joint
B.
Rzeppa joint
C.
tripod joint
D.
double Cardan - CORRECT ANSWER-A.
U-joint
Technician A says the outer CV joints of FWD axle shafts are nine times more likely to
need replacement than the inner joints. Technician B says a worn cage or race can
cause a clicking sound during a turn. Who is correct? - CORRECT ANSWER-both
A flux, or magnetic field, is present around permanent magnets and current-carrying
wires. - CORRECT ANSWER-true
Wire A has a diameter of 0.032 inches. Wire B has a diameter of 0.102 inches and an
AWG rating of 10. Which of these is MOST likely to be the AWG rating of Wire A?
A. 14 ga.
B. 12 ga.
C. 5 ga.
