Plumbing License Exam Questions with Correct Answers 100% Verified By Experts| Latest
Update Guaranteed Success
What is a hydrostatic testing? Pressure test
What causes squealing in plumbing pipes? Worn valve washer
Flared gas piping should not be made of? Ferrous metal
What is not considered grey water? Dishwasher and kitchen sink
The maximum storage capacity for rainwater catchmet system? 360 gallons
CO2 fire extinguishers are used on what class of fire? Flammable or combustible liquid & gas
and energized electrical equipment
Type "A" soil requires for every 1 foot of depth the trench must be excavated back ______ of a
foot. ¾ of a foot (9 inches)
Safety nets are needed for _______ feet above ground. 25 feet
Maximum allowed height of 3 section extension ladder? 60 feet
Safety toe shoes must be able to protect against _______ volts. 600 volts
Certification is required for cranes rated for? 3 tons
Before asbestos related work, DOSH must be notified ______hour in advance. 24 hours
, If a water closet requires flush controls, how are they operated? Automatically operated or
hand operated.
Safety nets must extend _______ feet beyond the wood surface. 8 feet
Guardrails must withstand a force of? 200 lbs.
All water service yard piping shall be at least ____ inches below the average local frost depth.
12 inches
In addition to the primary temperature controls, automatic storage type gas fired hot water
heaters and water boilers shall be provided with? Over temperature safety protection
device
Where the design and free area are not known, it shall be assumed that wood louvers will have
____ free area? 25%
Where the design and free area are not known, it shall be assumed that metal louvers and
grilles will have ___ percent free area. 75%
What is the minimum clearance in front of water heater service panels mounted in an
enclosure on the roof? 30 inches
True or False: That portion of venting system which connects an appliance to a vent is a flue.
False
Rainwater tank access openings exceeding ___ inches in diameter must be secured to prevent
tampering and unintended entry by either a lockable device or other approved method. 12
inches
Update Guaranteed Success
What is a hydrostatic testing? Pressure test
What causes squealing in plumbing pipes? Worn valve washer
Flared gas piping should not be made of? Ferrous metal
What is not considered grey water? Dishwasher and kitchen sink
The maximum storage capacity for rainwater catchmet system? 360 gallons
CO2 fire extinguishers are used on what class of fire? Flammable or combustible liquid & gas
and energized electrical equipment
Type "A" soil requires for every 1 foot of depth the trench must be excavated back ______ of a
foot. ¾ of a foot (9 inches)
Safety nets are needed for _______ feet above ground. 25 feet
Maximum allowed height of 3 section extension ladder? 60 feet
Safety toe shoes must be able to protect against _______ volts. 600 volts
Certification is required for cranes rated for? 3 tons
Before asbestos related work, DOSH must be notified ______hour in advance. 24 hours
, If a water closet requires flush controls, how are they operated? Automatically operated or
hand operated.
Safety nets must extend _______ feet beyond the wood surface. 8 feet
Guardrails must withstand a force of? 200 lbs.
All water service yard piping shall be at least ____ inches below the average local frost depth.
12 inches
In addition to the primary temperature controls, automatic storage type gas fired hot water
heaters and water boilers shall be provided with? Over temperature safety protection
device
Where the design and free area are not known, it shall be assumed that wood louvers will have
____ free area? 25%
Where the design and free area are not known, it shall be assumed that metal louvers and
grilles will have ___ percent free area. 75%
What is the minimum clearance in front of water heater service panels mounted in an
enclosure on the roof? 30 inches
True or False: That portion of venting system which connects an appliance to a vent is a flue.
False
Rainwater tank access openings exceeding ___ inches in diameter must be secured to prevent
tampering and unintended entry by either a lockable device or other approved method. 12
inches
