Thermal & Fluid Systems PE Sample Exam

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Mechanical Engineering PE Sample Exam

Working through sample PE Exam questions is one of the most efficient methods of preparing for exam.

  • Spend time understanding the intent of the question (i.e. what is the question writer actually testing you on)
  • Find useful resources that help answer the questions in the Sample Exam (and similar questions)
  • Assemble your resources into a system that you can use on exam day

If there is anything I can do for you as you work through this Mechanical Engineering Thermal & Fluid Systems PE Sample Exam and as you prepare for the Mechanical Engineering Thermal & Fluid Systems PE Exam, please do not hesitate to ask.

MTF 01           Psychrometrics:

In psychrometrics, Humidity Ratio is defined as ________________ and sometimes called _______________:
MTF 02           Psychrometrics:

An air handling unit cooling coil has the following characteristics: 7,500 cfm, 75°F/50%RH entering air temperature, 55°F/90%RH leaving air temperature, 42°F supply chilled water temperature, 52°F return chilled water temperature. Using the Water Vapor in Air chart provided, what gpm of chilled water is required?

Water Vapor Chart
MTF 03           Refrigeration Cycles:

The coefficient of performance (COP) of refrigeration cycles is calculated by:
MTF 04           Heat Transfer:

Determine the minimum insulation thickness required for a 6” hot water pipe (160°F). The maximum temperature on the outer surface of the insulation can be 100°F. Thermal conductivity of the insulation is 0.25 BTU-in./(hr-ft2-°F). The maximum heat loss from the pipe/insulation is 150 BTUh/ft.
MTF 05           HVAC/Refrigeration Systems:

In a simple refrigerant system, what is the order of equipment starting with the outdoor unit?
MTF 06           HVAC/Refrigeration Components:

In a direct-expansion air conditioning system, what is the purpose of the refrigerant air dryer?
MTF 07           Heating/Cooling Loads:

A retail building 100’-0” wide by 200’-0” deep x 16’-0” high has the following characteristics: the 2 sides and the rear of the building have an overall U-value of 0.11 BTU/ft2-hr-°F, the front of the building is constructed entirely of storefront glass panels with an overall U-value of 0.51 BTU/ft2-hr-°F, the roof has an overall U-value of 0.08 BTU/ft2-hr-°F, 75% of the overall floor space is to be used for occupancy and lighting calculations (sales area), the occupancy loading is 66.67 sq. ft per person in the sales area, people sensible load is 250 Btuh/person, the outside air ventilation requirements are: 5 cfm per person, 12 cfm per sq.ft. (sales area), 06 cfm per sq.ft. (warehouse area), the lighting load is 3 watts per square foot, the overall miscellaneous power is 1 watt per square foot, the store is to be maintained at 75°F/50%RH, the design day is 97°F/75°F, the blow through air handling unit discharge temperature is 56°F and the fan motor heat is 1°F. The total air conditioning load in tons is most nearly? (neglect solar heat gain)
MTF 08           Thermodynamic Cycles:

In a simple thermodynamic refrigerant cycle, what state is the refrigerant in between the condenser and the thermostatic expansion valve?
MTF 09           Thermodynamic Properties:

Thermodynamic properties are divided into two types – intensive and extensive. An extensive property depends on size or extent of the system. Intensive properties exist an any point in space. Which of the following are categorized as intensive properties: I. Pressure, II. Temperature, III. Volume, IV. Density
MTF 10           Thermodynamic Compression Processes:

Thermodynamic compression where no heat is transferred in or out is called ___________ compression.

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The Mechanical Engineering Thermal & Fluid Systems PE Sample Exam is designed to help you prepare for the PE Exam by following these 3 steps:

  1. Work through the information in the Sample Exam … follow the references … dig deep.
    • following the references/links for the problems will expand your knowledge of the subject.
  2. Work as many problems as you can find and note where you have difficulties.
    • working the problems in the Sample Exam plus any additional examples you can find is an excellent test preparation method.
  3. Take the time to put together a comprehensive Test-Day Resource Library©
    • the Test-Day Resource Library© is my #1 recommendation for everyone preparing for the PE Exam.

Remember, this is a process. If you will:

  • spend time every day gathering information
  • work the example problems in the Mechanical Engineering Thermal & Fluid Systems PE Sample Exam
  • assemble the resources into an organized system

… you will be successful.

To Your Success …

Jeff Setzer, PE
Thermal & Fluid Systems PE Sample Exam

If you have any questions or comments while working through the Mechanical Engineering Thermal & Fluid Systems PE Sample Exam, please do not hesitate to contact me.

I’d also appreciate your feedback once you’ve completed the guide.


Mechanical Engineering Thermal & Fluid Systems PE Sample Exam

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