MECHANICAL LAW – MICHIGAN
ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ The basic objective of Manual D is to design a duct system that will work
with the ____ that is supplied with the HVAC equipment.
Answer: Blower
◍ The Skilled Trades Regulations Act is also known as:.
Answer: PA 407 of 2016
◍ The airflow resistance produced by the duct system (duct runs, duct fittings
and air-side components) in terms of static pressure drop, shall_____ the
external static pressure (ESP) produced by the blower package when the
blower delivers the desired CF
M. .
Answer: Match
◍ Act 407 of 2016 does not require a contractor of record in a facility that
regularly employs a qualified maintenance crew_____________.
Answer: To perform work in that facility
◍ A _______ is the pressure loss that occurs between any two points of the
duct system, whereas _______ is the pressure loss that occurs between two
points in the duct system that are separated by a specific distance..
Answer: Pressure Drop/Friction Rate
◍ Pressure drop is measured in inches of water column (iwc) and friction rates
are measured in inches of water column per _______ feet of duct..
Answer: 100
,◍ Who can hold a mechanical license?.
Answer: Only an individual person
◍ Using the formula to convert the system pressure drop value to a friction
rate value found in Section 1-6 calculates the friction rate for a forced air
furnace with a blower capacity of 1400 cfm and a pressure drop of 0.18 with
a total effective length (TEL) of 180 feet of duct..
Answer: 0.10 iwc/100
◍ (chart A-1 page 132) With the friction rate known for the above duct system
using the friction rate charts in appendix2, _____ round galvanized duct
would be required..
Answer: 16
◍ To apply for the Mechanical Exam, a person must have:.
Answer: 3 years of experience
◍ Who may obtain a mechanical permit and legally do mechanical work
without a license besides a Licensed Mechanical Contractor?.
Answer: A homeowner
◍ Public Act 230 of 1972 is also known as:.
Answer: Construction code act
◍ The following are exempt from the Mechanical Contractor Act:.
Answer: There are no exemptions
◍ The total pressure drop for a duct run equals the pressure loss for all____
sections plus the pressure loss produced by each and every ____ in the duct
run..
Answer: Straight/Fitting
◍ The Skilled Trades Regulations Act took effect _________ and was signed
by_________.
Answer: April 4, 2017..... The governor
◍ The Board of Mechanical Rules consists of the State Fire Marshall who
shall be a permanent member and___________. The members shall be
, appointed for a term of___________and must be at least____________old..
Answer: 14 additional members; 4 years; 18 years
◍ The Stille-Derossett-Hale Single State Construction Code Act is also known
as:.
Answer: PA 230 of 1972
◍ Total Effective Legnth (TEL) is obtained by ____ the straight run and the
fitting equilavent length..
Answer: Adding
◍ Effective April 4, 2017 your Mechanical License shall expire
on_________and is valid for_______ _____.
Answer: August 31; 3 years
◍ When adding a ducted return air to the system, some pressure is used to
move air through the return air duct, so less pressure is available for the
supply side of the system. The only change in the formula to convert the
system pressure drop value to a friction rate value will be the ______..
Answer: Total Effective Length (TEL)
◍ Using the information in question 5, calculate the friction rate for a forced
air furnace with a blower capacity of 1400 cfm and a pressure drop of 0.18
with a total effective length (TEL) of 280 feet of duct allowing for the
addition 100 feet of return air duct..
Answer: 0.006
◍ A business has 90 days to replace the Contractor of Record if:.
Answer: Is deceased, is no longer employed by the business, and sells the
business
◍ With the friction rate known for the above duct system, using the friction
rate chart in appendix 2, ___round galvanized duct would be required.
Answer: 18"
◍ Does the State of Michigan reciprocate with other states (allow licensed
contractors from other states to work in Michigan without a Michigan
ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ The basic objective of Manual D is to design a duct system that will work
with the ____ that is supplied with the HVAC equipment.
Answer: Blower
◍ The Skilled Trades Regulations Act is also known as:.
Answer: PA 407 of 2016
◍ The airflow resistance produced by the duct system (duct runs, duct fittings
and air-side components) in terms of static pressure drop, shall_____ the
external static pressure (ESP) produced by the blower package when the
blower delivers the desired CF
M. .
Answer: Match
◍ Act 407 of 2016 does not require a contractor of record in a facility that
regularly employs a qualified maintenance crew_____________.
Answer: To perform work in that facility
◍ A _______ is the pressure loss that occurs between any two points of the
duct system, whereas _______ is the pressure loss that occurs between two
points in the duct system that are separated by a specific distance..
Answer: Pressure Drop/Friction Rate
◍ Pressure drop is measured in inches of water column (iwc) and friction rates
are measured in inches of water column per _______ feet of duct..
Answer: 100
,◍ Who can hold a mechanical license?.
Answer: Only an individual person
◍ Using the formula to convert the system pressure drop value to a friction
rate value found in Section 1-6 calculates the friction rate for a forced air
furnace with a blower capacity of 1400 cfm and a pressure drop of 0.18 with
a total effective length (TEL) of 180 feet of duct..
Answer: 0.10 iwc/100
◍ (chart A-1 page 132) With the friction rate known for the above duct system
using the friction rate charts in appendix2, _____ round galvanized duct
would be required..
Answer: 16
◍ To apply for the Mechanical Exam, a person must have:.
Answer: 3 years of experience
◍ Who may obtain a mechanical permit and legally do mechanical work
without a license besides a Licensed Mechanical Contractor?.
Answer: A homeowner
◍ Public Act 230 of 1972 is also known as:.
Answer: Construction code act
◍ The following are exempt from the Mechanical Contractor Act:.
Answer: There are no exemptions
◍ The total pressure drop for a duct run equals the pressure loss for all____
sections plus the pressure loss produced by each and every ____ in the duct
run..
Answer: Straight/Fitting
◍ The Skilled Trades Regulations Act took effect _________ and was signed
by_________.
Answer: April 4, 2017..... The governor
◍ The Board of Mechanical Rules consists of the State Fire Marshall who
shall be a permanent member and___________. The members shall be
, appointed for a term of___________and must be at least____________old..
Answer: 14 additional members; 4 years; 18 years
◍ The Stille-Derossett-Hale Single State Construction Code Act is also known
as:.
Answer: PA 230 of 1972
◍ Total Effective Legnth (TEL) is obtained by ____ the straight run and the
fitting equilavent length..
Answer: Adding
◍ Effective April 4, 2017 your Mechanical License shall expire
on_________and is valid for_______ _____.
Answer: August 31; 3 years
◍ When adding a ducted return air to the system, some pressure is used to
move air through the return air duct, so less pressure is available for the
supply side of the system. The only change in the formula to convert the
system pressure drop value to a friction rate value will be the ______..
Answer: Total Effective Length (TEL)
◍ Using the information in question 5, calculate the friction rate for a forced
air furnace with a blower capacity of 1400 cfm and a pressure drop of 0.18
with a total effective length (TEL) of 280 feet of duct allowing for the
addition 100 feet of return air duct..
Answer: 0.006
◍ A business has 90 days to replace the Contractor of Record if:.
Answer: Is deceased, is no longer employed by the business, and sells the
business
◍ With the friction rate known for the above duct system, using the friction
rate chart in appendix 2, ___round galvanized duct would be required.
Answer: 18"
◍ Does the State of Michigan reciprocate with other states (allow licensed
contractors from other states to work in Michigan without a Michigan
