CT Red seal prep #4 Flashcards
(103 cards)
What is the name for the entire recirculation of a swimming pool’s water?
a) Rate of circulation.
b) Rate of turnover.
c) Rate of exchange.
d) Rate of transfer.
b) Rate of turnover.
What must a toilet seat in a public restroom be?
a) round type
b) plastic non-permeable type
c) elongated open front type
d) cover-less type
c) elongated open front type
What is necessary for the installation of a deep well jet pump?
a) Relief valve is required with centrifugal jet pumps.
b) Foot valve is required on the jet suction line.
c) Modulating valve is required on the pump suction line.
d) Check valve is required on the pump discharge.
b) Foot valve is required on the jet suction line.
How many 2 1/2 in. When installing a 1000 gpm fire pump, should hose valves be mounted on the test header?
a) 5
b) 1
c) 4
d) 8
c) 4
When installing a 1000 gpm fire pump, four 2 1/2 inch hose valves should be
mounted on the test header. This configuration is typically used to test the
capacity of the pump.
A 1 1/2 in. A circuit vent serves a branch that has eleven linked WCs. A vent is positioned downstream of the most downstream toilet. Where may an extra
circuit vent be attached to the branch if required?
a) Between the second and third most upstream WC’s.
b) An additional circuit vent is not required.
c) Between the two most downstream WC’s.
d) Between the fifth and sixth most upstream WC’s.
b) An additional circuit vent is not required.
What is the minimum size of a toilet’s drain?
a) 3
b) 2
c) 4
d) 2 ½
a) 3
on what is the water pipe sizing technique based?
a) loss of pressure or friction through a water meter
b) loss or gain in static pressure
c) A system of pressure losses or requirements
d)
c) A system of pressure losses or requirements
What colour is the M type?
a) Blue
b) Red
c) Yellow
d) Black
b) Red
What are globe valves, gate valves, and plug valves examples of?
a) manual valves
b) hydraulic valves
c) solenoid valves
d) pneumatic valves
a) manual valves
How would you extend the flush duration on a flushometer?
a) remove vacuum breaker
b) turn regulating screw counter clockwise
c) throttle the stop valve
d) turn regulating screw clockwise
b) turn regulating screw counter clockwise
How many cubic metres of water are in the tank if a non-pressurized holding tank’s pressure gauge shows 24.3kpa?
a) 4.35m deep
b) 3.58m deep
c) 1.95m deep
d) 2.48m deep
c) 1.95m deep
he depth of water in a non-pressurized holding tank can be calculated based
on the pressure gauge reading. The given pressure gauge reading corresponds
to a depth of approximately 1.95 meters.
Using an offset relief vent inside a building’s DWV system results in a 6-inch
diameter at the base of the stack and a 3-inch diameter for the stack vent. Which of the following best describes the dimension of the offset relief vent?
a) 3in
b) 2in
c) 1 ½ in
d) 1in
a) 3in
he dimension of the offset relief vent should be the same as the stack vent
diameter, which is 3 inches in this scenario.
What is the smallest capacity for a water service?
a) ¾
b) 1
c) ½
d) 2
a) ¾
The water with a pH of 5.50 would be considered?
a) very alkaline
b) mildly alkaline
c) very acidic
d) mildly acidic
c) very acidic
Which installation approach for a wall-mounted toilet maintains a watertight seal on the waste connection?
a) Horn wax seal is positioned and compressed by adjustable nipple.
b) Adjustable nipple is set for compression of gasket.
c) Chair carrier is positioned close to the finished wall.
d) Back up nuts and washers are set 1/16” past wall.
a) Horn wax seal is positioned and compressed by adjustable nipple.
50/50 solder joints are?
a) permitted on NH systems
b) permitted on systems containing less than 6lbs of Group 1 refrigerants
c) not permitted on any systems
d) are permitted on any system
c) not permitted on any systems
Which of the following should be the fire protection system if a potable water supply supports a dry sprinkler fire protection system?
a) should be isolated from the potable water system by a listed alarm check
valve
b) should be isolated from the potable water system by a resilient seated check
valve
c) should be isolated from the potable water system by a backflow preventer
d) not required to be isolated from the potable water system
c) should be isolated from the potable water system by a backflow preventer
How is a piece of field-cut glass pipe assembled with a piece of factorybeaded glass pipe?
a) Remove roughness from outside of the field cut and use manufacturer’s coupling designed for this application.
b) Remove roughness from the outside of field cut and use a rubber coupling
with stainless steel clamps.
c) Heat and bevel the field cut end of the pipe and use a rubber coupling with
stainless steel clamps.
d) Heat and bead the field cut end of the pipe and use manufacturer’s
coupling designed for this application
a) Remove roughness from outside of the field cut and use manufacturer’s coupling designed for this application.
What is the size of the yoke vent when it is linked to a 2-inch branch and a
3-inch vent stack?
a) 3in
b) 2in
c) 1 ½ in
d) 1in
b) 2in
he size of the yoke vent when linked to a 2-inch branch and a 3-inch vent stack
should be 2 inches. This size is appropriate for venting the fixtures served by the
2-inch branch.
On which fixture floor support would a large cast iron service sink be
mounted?
a) P-trap standard.
b) Lavatory chair carrier.
c) Cast iron floor flange.
d) Pressed steel wall bracket.
d) Pressed steel wall bracket.
SPACER
SPACER
Each end of a 100-meter-long, 4” cast iron storm drainage system is equipped with a hanger. How many hangers are necessary if the maximum spacing between supports is observed?
a) 37
b) 35
c) 36
d) 33
b) 35
For a 100-meter-long, 4” cast iron storm drainage system with hangers spaced at
maximum intervals, 35 hangers are necessary to support the pipe, including
hangers at both ends.
The estimated occupancy load of a retail centre was 5,400 people. Which of the following is the maximum number of urinals that may be substituted for water closets in men’s public restrooms?
a) 14 urinals
b) 10 urinals
c) 7 urinals
d) 6 urinals
c) 7 urinals
For a retail center with an estimated occupancy load of 5,400 people, the
maximum number of urinals that may be substituted for water closets in men’s
public restrooms is typically 7 urinals.
On the downstream side of a high pressure steam safety valve that vents to the roof, what device is installed?
a) Safety valve de-accumulator.
b) Double block and bleed.
c) Drip pan elbow.
d) Exhaust head.
c) Drip pan elbow.