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ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam

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About this Exam

Prepare with the ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam practice quiz. This question bank includes 100 questions covering compressor, school, refrigerant, cooling, and cause. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

Sample Questions

Question 1
A school bus A/C system uses R-134a. Which refrigerant identifier and service practice applies?
R-134a is a non-flammable HFC requiring SAE J2788 recovery/recycling equipment
R-134a is a flammable HFO requiring spark-proof tools only
R-134a is the same as R-12 and uses mineral oil
R-134a requires no recovery because it is environmentally inert
Question 2
Before opening any school bus A/C refrigerant line for service, the technician must first:
Add dye to the system
Recover the refrigerant with certified recovery equipment
Run the engine at high idle for 10 minutes
Disconnect the bus batteries
Question 3
A manifold gauge set connected to a school bus A/C system reads high on the low side and low on the high side with the compressor running. The most likely cause is:
Air in the system
Overcharged system
Internal compressor problem (failed reed valves or worn pump)
Restricted orifice tube
Question 4
The correct way to determine the refrigerant charge for a school bus A/C system is to:
Charge until the low side reads exactly 30 psi
Add one full 30 lb cylinder per bus
Charge until the sight glass clears
Charge by weight per the manufacturer underhood label or service data
Question 5
A bus A/C system is being evacuated. The purpose of the vacuum (evacuation) step is to:
Remove air and boil off moisture before recharging
Test compressor clutch operation
Pressurize the system for a leak test
Add refrigerant oil to the system

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Additional Information

ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam

This practice set contains 100 questions from the matching question bank and focuses on compressor, school, refrigerant, cooling, and cause. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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Frequently Asked Questions

This quiz contains a total of 100 practice questions carefully selected to test your knowledge on this subject.
Yes, you will have exactly 0 minutes to complete the exam. A countdown timer will be visible once you start.
Yes, you can retake this practice test as many times as you need. The questions and options may be randomized on subsequent attempts to ensure comprehensive learning.

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