1. What is refrigeration?

2. What is a cooling tower?

3. What is a compressor?

4. What is an evaporator?

5. What is a receiver?

6. What is a condenser?

7. What is the suction line on a compressor?

8. What is direct refrigeration system?

9. What is a refrigeration agent?

10. What is the definition of a refrigeration cycle?

11. What is liquid refrigeration?

12. Explain how to start and stop an ammonia compressor.

13. Explain the safety control on a chiller.

14. Explain the importance of oil in an ammonia system.

15. Explain post of duty.

16. Explain an oil separator.

17. What type of oil can be used on an ammonia compressor?

18. Explain a BTU.

19. Explain one (1) ton of cooling capacity.

20. What is the purpose of automatic expansion valves?

21. Explain what is high and low side?

22. A ton of refrigeration is the same amount of refrigeration as is produced by 2000 pounds of ice melted in a twenty-four (24) period.

True or False

23. What is 12,000 BTU's equal to in a twenty-four (24) hour period?

24. Knowledge of the City of Dearborn Boiler Code.

a. Definitions
b. License required and expiration
c. Exemptions from license requirements
d. Grades of licenses
e. Maximum capacity allowable for grades of licenses
f. Issuance of licenses. Methods and requirements.
g. Special licenses.
h. State of Michigan, Dept. of Construction Codes, Boiler Division
i. Post of Duty
j. Notice of place of employment
k. Reporting of defective boilers
l. Duties of Steam Engineers and Boiler Operators
m. Observation and inspection of boilers
n. Posting of regulations

Exam questions may be fill in the blank, true or false or short essay. Study questions listed above are sample questions only!