ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The color code of a tank of ammonia is

  • light green
  • white
  • silver
  • lavender

2: Machinery rooms must be vented to ______?

  • neutralizing tank
  • basement
  • outdoors
  • unoccupied spaces

3: How many different groups of refrigerants are there?

  • 11
  • 7
  • 15
  • 3

4: No open flames are allowed in the machinery room unless?

  • Only when combustion air is provided from outside of the machinery room
  • Never can be allowed
  • Approved by the installing contractor
  • Approved by the authorized person

5: What type of copper is not permitted on refrigeration systems?

  • Type M
  • Type L
  • Type N
  • Type K

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

  • relief valve
  • bleed valve
  • service valve
  • condenser

7: What refrigerant were phased out in 2004?

  • R-12
  • R-134a
  • R-22
  • R-11

8: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually
  • shall have a pressure limiting device and a pressure relief valve installed
  • does not require a pressure-limiting device

9: A positive displacement compressor is

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

10: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • it shall be approved by the owner for proper operation.
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall not be operated below prescribed pressures

11: What type of pressure relief device is used on a CO2 system?

  • Gate valve
  • Rupture disk
  • Glove valve
  • Fusible plug

12: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

13: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

14: Where must a refrigeration contractor's license number be displayed?

  • Truck, office, every job, and on all equipment
  • Uniforms, checks, and invoices.
  • Trucks, license plates, and uniforms
  • Trucks, invoices, and advertising

15: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

16: Most CFC's are

  • flammable
  • inert but toxic
  • toxic
  • inert

17: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.

18: The Department that certifies the transportation of refrigerant is the

  • EPA
  • EPO
  • RSES
  • DOT

19: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • design pressure
  • critical pressure
  • high pressure
  • low pressure

20: How many flammability classifications are refrigerants in?

  • 3
  • 7
  • 2
  • 5

21: Liquid level gauges must be provided with what?

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

22: What section of ASHRAE-15 governs pressure vessels?

  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 6 ASHRAE-34 ASME VIII unfired
  • OSHA

23: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

24: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

25: How are refrigerant blends classified?

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