Michigan (MI) Hydronic Heating, Cooling
& Process Piping Exam Question with
Answers
70 degrees Fahrenheit is equivalent to _____ degrees Celsius. Use formula C=(F-
32)x5/9 (5/9=.56).
21
28 Degrees Celsius is equivalent to _____ degrees Fahrenheit. Use formula
F=(Cx9/5)+32 (9/5=1.8).
82
On a low-pressure residential steam boiler the relief device opens at?
15 Pounds
If too much primary air is used the flame will __________?
Lift off the burner
,What operates the heat anticipator in a low voltage thermostat?
24 volts a/c
A limit is located where in the electrical circuit?
Either the 24 or 120-volt circuit
What is the usual oil pressure in a high-pressure gun type oil burner?
100 PSIG
What license is required to perform a CSD-1 on a boiler that has an input rating of
1.7MBTU?
Mechanical Contractor Category 6
Section 1004.1 : a boiler with a rating of 12,500,000 btu's or less is for CSD-1,
anything larger is per NFPA-85 but both of them fall under Category 6 Unlimited
Heating Service license.
A psychometer is a _____?
A hygrometer consisting of a wet-bulb and dry-bulb thermometer, the difference
in the two readings used to determine the atmospheric humidity.
, A psychometric chart is a _____?
Chart where the various properties of air is plotted
Combustion is what type of process?
Chemical
What percentage of oxygen is in the air?
21 Percent
A hand shut off valve in a gas line is used to turn gas on and off to _____
Burner and Pilot
CGV is the abbreviation for _____
Combination gas valve
The maximum safety drop out time for a thermo-couple is?
& Process Piping Exam Question with
Answers
70 degrees Fahrenheit is equivalent to _____ degrees Celsius. Use formula C=(F-
32)x5/9 (5/9=.56).
21
28 Degrees Celsius is equivalent to _____ degrees Fahrenheit. Use formula
F=(Cx9/5)+32 (9/5=1.8).
82
On a low-pressure residential steam boiler the relief device opens at?
15 Pounds
If too much primary air is used the flame will __________?
Lift off the burner
,What operates the heat anticipator in a low voltage thermostat?
24 volts a/c
A limit is located where in the electrical circuit?
Either the 24 or 120-volt circuit
What is the usual oil pressure in a high-pressure gun type oil burner?
100 PSIG
What license is required to perform a CSD-1 on a boiler that has an input rating of
1.7MBTU?
Mechanical Contractor Category 6
Section 1004.1 : a boiler with a rating of 12,500,000 btu's or less is for CSD-1,
anything larger is per NFPA-85 but both of them fall under Category 6 Unlimited
Heating Service license.
A psychometer is a _____?
A hygrometer consisting of a wet-bulb and dry-bulb thermometer, the difference
in the two readings used to determine the atmospheric humidity.
, A psychometric chart is a _____?
Chart where the various properties of air is plotted
Combustion is what type of process?
Chemical
What percentage of oxygen is in the air?
21 Percent
A hand shut off valve in a gas line is used to turn gas on and off to _____
Burner and Pilot
CGV is the abbreviation for _____
Combination gas valve
The maximum safety drop out time for a thermo-couple is?
