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C-38 Refrigeration Practice Questions - California CSLB C-38 Refrigeration Examination Exam

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About this Exam

Prepare with the C-38 Refrigeration Practice Questions - California CSLB C-38 Refrigeration Examination Exam practice quiz. This question bank includes 100 questions covering degrees, pressure, suction, line, and liquid. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

Sample Questions

Question 1
A walk-in cooler load calculation requires calculating sensible heat gain from outdoor ventilation air. If 200 CFM of outdoor air at 95 degrees F dry-bulb enters a walk-in cooler maintained at 35 degrees F, what is the sensible heat load in BTU/hr?
12,960 BTU/hr sensible heat load.
15,480 BTU/hr sensible heat load.
10,800 BTU/hr sensible heat load.
18,200 BTU/hr sensible heat load.
Question 2
A commercial freezer wall has an overall heat transfer coefficient (U-factor) of 0.035 BTU/hr-sq ft-degree F and a surface area of 400 sq ft. If the ambient design temperature is 90 degrees F and the freezer interior is -10 degrees F, what is the wall heat transmission load?
1,120 BTU/hr total wall transmission heat load.
1,400 BTU/hr total wall transmission heat load.
1,680 BTU/hr total wall transmission heat load.
2,100 BTU/hr total wall transmission heat load.
Question 3
A refrigeration contractor must estimate the product load to cool 2,000 lbs of fresh beef from 65 degrees F down to 35 degrees F over a 24-hour pull-down period. Given the specific heat above freezing is 0.75 BTU/lb-degree F, what is the required hourly product cooling load?
1,250 BTU/hr required hourly cooling load.
1,500 BTU/hr required hourly cooling load.
1,875 BTU/hr required hourly cooling load.
2,250 BTU/hr required hourly cooling load.
Question 4
When estimating compressor operating conditions for an R-404A low-temperature system, suction pressure is 15.3 psig and discharge pressure is 235.3 psig. What is the absolute compression ratio of the system?
15.38:1 absolute compressor pressure ratio.
12.50:1 absolute compressor pressure ratio.
10.25:1 absolute compressor pressure ratio.
8.33:1 absolute compressor pressure ratio.
Question 5
According to standard commercial refrigeration piping guidelines, what minimum suction line refrigerant velocity must be maintained in vertical risers during minimum system load capacity to ensure proper oil return to the compressor?
1,500 feet per minute minimum line velocity.
2,500 feet per minute minimum line velocity.
3,500 feet per minute minimum line velocity.
4,500 feet per minute minimum line velocity.

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Additional Information

C-38 Refrigeration Practice Questions - California CSLB C-38 Refrigeration Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on degrees, pressure, suction, line, and liquid. 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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