International Mechanical Code Exam Questions With
Verified Answers
Where located adjacent to walkways, the horizontal termination of
mechanical draft systems shall not be less than ____feet above the level of the
walkway. - accurate answers-7
Section 804.3.4
Any location considered to be a fire hazard for flammable vapors, dust,
combustible fibers or other highly combustible substances. - accurate
answers-Hazardous Location
Section 202
An assembly of connected ducts, plenums, fittings, registers, grilles, and hoods
through which air is conducted from the space or spaces and exhausted to the
outside atmosphere. - accurate answers-Exhaust System
Section 202
Duct System
Section 202 - accurate answers-A continuous passageway for the transmission
of air that in addition to ducts, includes duct fittings, dampers, plenums, fans,
and accessory air-handling equipment and appliances.
Damper
Section 202 - accurate answers-A manually or automatically controlled device
to regulate draft or the rate of flow of air or combustion gases.
Fire Damper
Section 202 - accurate answers-A listed device installed in ducts and air
transfer openings designed to close automatically upon detection of heat and
to restrict the passage of flame.
Condensate
Section 202 Definitions - accurate answers-The liquid that condenses from a
gas (including flue gas) caused by a reduction in temperature.
Commercial kitchen hoods by definition - accurate answers-6:
,Machinery rooms are not required for listed equipment and appliances
containing not more than _____pounds or refrigerant, regardless of the
refrigerant's safety classification. - accurate answers-6.6 where installed in
accordance with the listing and the manufacturer's instructions. Section
1104.2
Exhaust from mechanical ventilation systems serving machinery rooms shall
be discharged not less than ____ feet from a property line or openings into
buildings. - accurate answers-20 The discharge of air shall be to the outdoors
in accordance with Chapter 5. Section 1105.6.1
Refrigerant piping installed in concrete floors shall be encased in ______
_____________ - accurate answers-Pipe Ducts. The piping shall be isolated and
supported to prevent damaging vibration , stress, and corrosion. Section
1107.2.1
Refrigerant piping systems containing ______ pounds or more of a refrigerant,
other than systems utilizing nonpositive displacement compressors, shall
have stop valves on each inlet of each liquid receiver. - accurate answers-100
in additon to those required by Section 1107.8
Section 1107.8.1
A certificate of test shall be provided for all refrigeration systems containing
______ pounds or more of refrigerant. - accurate answers-55
Section 1108.4
Steam boilers shall be equipped with bottom ______ valves. - accurate answers-
blowoff
Section 1008.1
Locations of refrigerating systems are described by ____ classifications that
consider the ability of people to respond to potential exposure to refrigerants.
- accurate answers-Occupancy. There are seven types.
Section 1103.2
Existing refrigerant access ports located outdoors require tamper-resistant
caps or other protection whenever ________ is ________. - accurate answers-
Refrigerant is added.
Section 1102.3 or recovered
, Refrigerants, including refrigerant blends, with different designations in
ASHRAE 34 shall ______ be mixed in a system. - accurate answers-Not
Exception: Addition of a second refrigerant is allowed where permitted by the
equipment or appliance manufacturer to improve oil return at low
temperatures.
Section 1102.2.1 Mixing
Refrigerant circuit access ports located ______ shall be fitted with locking-type
tamper resistant caps. - accurate answers-Outdoors
Or shall be otherwise secured to prevent unauthorized access.
Section 1101.10
Open-type expansion tanks shall be located not less than _____feet above the
highest heating element. - accurate answers-4
Section 1009.3
The minimum size of a closed-type expansion tank shall be based on the _____
of the hot-water-heating system. - accurate answers-Capacity
Review Equation 10-1
Section 1009.2
The power supply to the electrical control system for the boiler shall be from a
two-wire branch circuit that has a _______conductor, or from an isolation
tranformer with a two-wire secondary. - accurate answers-Grounded
Section 1006.8
All pressure vessels shall be protected with a _______ relief valve or _________-
limiting device. - accurate answers-Pressure & Pressure
As required by the manufacturer's installation instructions for the pressure
vessel.
Section 1006.3
Steam boilers shall be protected with a _______ valve. - accurate answers-Safety
Section 1006.1
Boilers shall be mounted on floors of ________ construction. - accurate answers-
Noncombustible
Unless listed for mounting on combustible flooring.
Verified Answers
Where located adjacent to walkways, the horizontal termination of
mechanical draft systems shall not be less than ____feet above the level of the
walkway. - accurate answers-7
Section 804.3.4
Any location considered to be a fire hazard for flammable vapors, dust,
combustible fibers or other highly combustible substances. - accurate
answers-Hazardous Location
Section 202
An assembly of connected ducts, plenums, fittings, registers, grilles, and hoods
through which air is conducted from the space or spaces and exhausted to the
outside atmosphere. - accurate answers-Exhaust System
Section 202
Duct System
Section 202 - accurate answers-A continuous passageway for the transmission
of air that in addition to ducts, includes duct fittings, dampers, plenums, fans,
and accessory air-handling equipment and appliances.
Damper
Section 202 - accurate answers-A manually or automatically controlled device
to regulate draft or the rate of flow of air or combustion gases.
Fire Damper
Section 202 - accurate answers-A listed device installed in ducts and air
transfer openings designed to close automatically upon detection of heat and
to restrict the passage of flame.
Condensate
Section 202 Definitions - accurate answers-The liquid that condenses from a
gas (including flue gas) caused by a reduction in temperature.
Commercial kitchen hoods by definition - accurate answers-6:
,Machinery rooms are not required for listed equipment and appliances
containing not more than _____pounds or refrigerant, regardless of the
refrigerant's safety classification. - accurate answers-6.6 where installed in
accordance with the listing and the manufacturer's instructions. Section
1104.2
Exhaust from mechanical ventilation systems serving machinery rooms shall
be discharged not less than ____ feet from a property line or openings into
buildings. - accurate answers-20 The discharge of air shall be to the outdoors
in accordance with Chapter 5. Section 1105.6.1
Refrigerant piping installed in concrete floors shall be encased in ______
_____________ - accurate answers-Pipe Ducts. The piping shall be isolated and
supported to prevent damaging vibration , stress, and corrosion. Section
1107.2.1
Refrigerant piping systems containing ______ pounds or more of a refrigerant,
other than systems utilizing nonpositive displacement compressors, shall
have stop valves on each inlet of each liquid receiver. - accurate answers-100
in additon to those required by Section 1107.8
Section 1107.8.1
A certificate of test shall be provided for all refrigeration systems containing
______ pounds or more of refrigerant. - accurate answers-55
Section 1108.4
Steam boilers shall be equipped with bottom ______ valves. - accurate answers-
blowoff
Section 1008.1
Locations of refrigerating systems are described by ____ classifications that
consider the ability of people to respond to potential exposure to refrigerants.
- accurate answers-Occupancy. There are seven types.
Section 1103.2
Existing refrigerant access ports located outdoors require tamper-resistant
caps or other protection whenever ________ is ________. - accurate answers-
Refrigerant is added.
Section 1102.3 or recovered
, Refrigerants, including refrigerant blends, with different designations in
ASHRAE 34 shall ______ be mixed in a system. - accurate answers-Not
Exception: Addition of a second refrigerant is allowed where permitted by the
equipment or appliance manufacturer to improve oil return at low
temperatures.
Section 1102.2.1 Mixing
Refrigerant circuit access ports located ______ shall be fitted with locking-type
tamper resistant caps. - accurate answers-Outdoors
Or shall be otherwise secured to prevent unauthorized access.
Section 1101.10
Open-type expansion tanks shall be located not less than _____feet above the
highest heating element. - accurate answers-4
Section 1009.3
The minimum size of a closed-type expansion tank shall be based on the _____
of the hot-water-heating system. - accurate answers-Capacity
Review Equation 10-1
Section 1009.2
The power supply to the electrical control system for the boiler shall be from a
two-wire branch circuit that has a _______conductor, or from an isolation
tranformer with a two-wire secondary. - accurate answers-Grounded
Section 1006.8
All pressure vessels shall be protected with a _______ relief valve or _________-
limiting device. - accurate answers-Pressure & Pressure
As required by the manufacturer's installation instructions for the pressure
vessel.
Section 1006.3
Steam boilers shall be protected with a _______ valve. - accurate answers-Safety
Section 1006.1
Boilers shall be mounted on floors of ________ construction. - accurate answers-
Noncombustible
Unless listed for mounting on combustible flooring.
