Question

truck & transport mechanic level 1 - practice exam
this practice exam contains 100 multiple - choice questions with answers provided at the end.
questions are based on level 1 apprenticeship / red seal exam topics including: safety, tools, brakes, suspension, hydraulics, engines, electrical, and shop practices.
q1. what is the correct air pressure range at which a governor should cut - out in an air brake system?
a) 80 - 90 psi
b) 100 - 120 psi
c) 125 - 135 psi
d) 60 - 80 psi
q2. which tool is best suited for measuring inside cylinder bore wear?
a) micrometer
b) vernier caliper
c) telescoping - gauge with micrometer
d) dial indicator
q3. dot - approved air brake chambers are identified by:
a) a colour code
b) the size number stamped on the chamber
c) an engraved date code only
d) chamber mounting position
q4. the primary function of the slack adjuster is to:
a) adjust pushrod stroke length
b) increase air pressure
c) reduce brake lining wear
d) permit movement out - of - necessity
q5. when testing batteries, which reading indicates a fully charged 12v lead - acid battery at rest?
a) 12.0 v
b) 12.6 v
c) 13.8 v
d) 11.9 v
q6. what is the correct air pressure range at which a governor should cut - out in an air brake system?
a) 80 - 90 psi
b) 100 - 120 psi
d) 60 - 80 psi
q7. which tool is best suited for measuring inside cylinder bore wear?
a) micrometer
b) vernier caliper
c) telescoping gauge with micrometer
d) dial indicator
q8. dot - approved air brake chambers are identified by:
a) a colour code
b) the size number stamped on the chamber
c) an engraved date code only
d) chamber mounting position
q9. the primary function of the slack adjuster is to:

Explanation:

Q1: In an air - brake system, the governor typically cuts - out in the 100 - 120 psi range.
Q2: A telescoping gauge with a micrometer is best for measuring inside cylinder bore wear as it can access the internal space and provide accurate measurements.
Q3: DOT - approved air brake chambers are identified by the size number stamped on the chamber.
Q4: The primary function of the slack adjuster is to adjust pushrod stroke length.
Q5: A fully charged 12V lead - acid battery at rest typically reads around 12.6V.
Q6: As explained in Q1, the correct range is 100 - 120 psi.
Q7: As explained in Q2, a telescoping gauge with a micrometer is the right tool.
Q8: As explained in Q3, they are identified by the size number stamped on the chamber.
Q9: As explained in Q4, its function is to adjust pushrod stroke length.

Answer:

Q1. b) 100 - 120 psi
Q2. c) Telescoping gauge with micrometer
Q3. b) The size number stamped on the chamber
Q4. a) Adjust pushrod stroke length
Q5. b) 12.6 V
Q6. b) 100 - 120 psi
Q7. c) Telescoping gauge with micrometer
Q8. b) The size number stamped on the chamber
Q9. a) Adjust pushrod stroke length