ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Where a refrigeration or air conditioning system is installed,

  • the form or certificate shall be authorized by the Department of Public Safety
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers
  • A field inspection shall be made before it is put into service

2: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • institutional occupancy
  • commercial occupancy
  • illegal occupancy
  • public assembly occupancy

3: Class A refrigerants are considered

  • non-flammable
  • toxic
  • non-toxic
  • flammable

4: Liquid level gauges must be provided with what?

  • Automatic shut-offs
  • A relief valve
  • A low level mark
  • A red line

5: A positive displacement compressor is

  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
  • is a reciprocating type compressor with 2 or more pistons
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber

6: A pressure relief should be located at least _______ from windows and doors.

  • 25'
  • 15'
  • 30'
  • 20'

7: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

8: How much refrigerant can be stored in a mechanical room outside of the system?

  • 330
  • 200
  • 150
  • 100

9: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 22 lbs
  • 13.9 lbs
  • 6.6 lbs
  • 44 lbs

10: Doors communicating with outside from a mechanical room must be?

  • Self-closing, wooden, fire door
  • Self-closing, aligned, fire door
  • Self-closing, approved, fire door
  • Steel, approved, weather-stripped

11: What would be the classification of a prison?

  • Large mercantile
  • Industrial
  • Place of assembly
  • Institutional

12: A relief valve discharge capacity is rated in

  • temperature minus pounds of air per second divided by release rate squared
  • PSIG
  • Pounds of air per minute.
  • PSIA

13: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UL and UM
  • UM or UL
  • UV or UR
  • UL and UR

14: What refrigerant doesn't have to be classifted?

  • R-718
  • R-717
  • R-134a
  • R-711

15: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

16: High pressure controls should be set no higher than

  • 25% of set point
  • 80% of set point
  • 10% of set point
  • 90% of set point

17: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

18: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 50
  • 25
  • 66
  • 22

19: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • Place sign, check for leaks, and insulate suction line
  • Nothing must be done
  • you can never change refrigerants
  • Make sure its compatible, notify owner, and notify AHJ.

20: How many groups of refrigerants are there?

  • 5
  • 7
  • 1
  • 3

21: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the low side
  • the aggregate of the high side and low side
  • the high side
  • 2.5 times the design pressure

22: How are refrigerant blends classified?

  • Blends don't have to be classified
  • Based on best case Fractionation
  • Based on worst case fractionation
  • Based on the oil used

23: How many gallons of water per pound of ammonia do you need?

  • 5
  • 1
  • 15
  • 20

24: Stop valves shall not be permitted between the system and the

  • bleed valve
  • relief valve
  • condenser
  • service valve

25: What is an example of institutional occupancy?

  • Hospital
  • Shopping mall
  • Football stadium
  • Dorms