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AST 1 FINAL QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
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AST 1 FINAL QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
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AST 1 FINAL QUESTIONS AND ANSWERS WITHCOMPLETE SOLUTIONS
About how much of the turning torque applied to a head bolt is lost to friction? -
ANSWER 80%
Service information states that SAE 30 engine oil should be used on the threads of
the head bolts before installation and torqueing.
Technician A says that SAE 5W-30 will work.
Technician B says that SAE 10W-30 will work.
Which technician is correct? - ANSWER Neither Technician A nor B
Technician A says that the torque applied to the head bolts is the same as the
clamping force on the gasket.
Technician B says that the clamping force is the force actually applied to the
surfaces of the gasket.
Which technician is correct? - ANSWER Technician B only
A coating usually used to keep an engine from rusting during assembly is called
_________. - ANSWER Fogging oil
Head gasket installation is being discussed.
Technician A says that the surface finish of the cylinder head or block deck are
very important for proper sealing to occur.
Technician B says that if "front" is marked on a head gasket, the mark should be
installed near the accessory drive belt end of the engine.
,Which technician is correct? - ANSWER Both Technicians A and B
Technician A says that studs should be installed finger tight.
Technician B says that studs must be installed using a thread locker such as
Loctite®.
Which technician is correct? - ANSWER Both Technicians A and B
What can be used to check that heads are at the correct angle for the intake
manifold on a V-type engine? - ANSWER An angle gauge
What is true about checking bearing clearance using Plastigage? - ANSWER All
of the above
An engine dynamometer measures_______. - ANSWER Torque
If the torque and horsepower reading are graphed where do the curves cross
(equal each other)? - ANSWER At 5,252 RPM
What do you call the service technician's protective head cover? - ANSWER
Bump Cap
All safety glasses should meet the standards set by ______. - ANSWER ANSI
When washing hands, the water should be at what temperature? - ANSWER
110 degrees
, Hearing protection should be worn anytime the noise level exceeds _______. -
ANSWER 90 dB
Two technicians are discussing the safe use of a wrench. Technician A says that a
wrench should be pulled toward you. Technician B says that a wrench should be
pushed away from you. Which technician is correct? - ANSWER Technician A
Exhaust hoses should be used because one of the exhaust gases is deadly in high
concentration. This gas is ___________. - ANSWER Carbon Monoxide
The process of combustion occurring without an open flame is called ________. -
ANSWER Spontaneous combustion
When using a fire extinguisher, what word can be used to remember what to do? -
ANSWER PASS
Which type of fire extinguisher can create a corrosive compound when
discharged? - ANSWER Dry Chemical
Which item is usually not included in a first aid kit? - ANSWER Fire blanket
Hazardous materials include all of the following except: - ANSWER Water
To determine if a predictor substance being used is hazardous, consult: -
ANSWER MSDS
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