ABT FINAL TEST 2025 QUESTIONS WITH CORRECT ANSWERS!!

ABT FINAL TEST 2025 QUESTIONS
WITH CORRECT ANSWERS!!




1 of 32

Term


Technician A says "In case of a trailer break away, where the supply
line is open to atmosphere, the Bendix SR-5 Trailer Spring Brake
Valve will automatically apply the trail spring brake". Technician B
says "The Bendix SR-5 Trailer Spring Brake Valve will prevent
simultaneous application of the service and park brakes". Who is
correct?



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, Technician A True



Technician B Both


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2 of 32

Term



For the Bendix Standard AD-9 Air Dryer to work most efficiently it
must remain in the purge cycle for a minimum of:
a. 30 seconds
b. 60 seconds
c. 120 seconds



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e. All of the above b. 50 psi




a. 30 seconds d. All of the above


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3 of 32

Term



True or False: A tractor protection valve like the Bendix TP-3DC
Valve protects the tractor's air system and applies the trailer brakes

, in case of a trailer break away.



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a. 30 seconds True




False d. All of the above


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4 of 32

Term



With the tractor system fully charged and the Bendix PP-7 Trailer
Supply Valve button pushed in: Gauge A reads 30 psi. Gauge B will
read:
a. 120 psi
b. 0 psi
c. 30 psi



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b. 50 psi c. 30 psi




a. 120 psi Technician A


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