NCCER BOILERMAKER 3:
Quiz 1 questions and
Answers all correct and
A
verified 2024!
VI
TU
Gate valves should not be used to _____. - ANSWER throttle flow
The main advantage of using gate valves instead
of globe valves is that the gate valves ________. - ANSWER have less flow
IS
restriction
Which of the following valves is a rotary action
M
valve? - ANSWER Ball
O
Which of the following valves is easily adapted to multiport construction? - ANSWER
Plug
A
A globe valve that closes against the direction
of fluid flow is said to be _____ . - ANSWER Flow-to-open
N
One disadvantage of the globe valve is ______. - ANSWER high head loss on the
JP
downstream side
A simpler version of the globe valve is the _______. - ANSWER angle valve
Which valve's discharge conditions are so favorable
that many control valves are based on it? - ANSWER Angle
A needle valve may be used when an application
requires_____. - ANSWER fine adjustment of flow
, Safety valves are commonly installed_____ - ANSWER vertically
Relief valves are normally used in liquid services. - ANSWER True
A swing check valve requires a counterweight
if used_____ - ANSWER in a vertical flow
In a swing check valve, the amount that the disc is open is determined by the_____ -
ANSWER volume of liquid moving through the
A
valve
VI
Why are ball check valves recommended for use in lines in which the fluid pressure
changes rapidly? - ANSWER Lack of noise
TU
Which type of gear operator is used to connect
parallel shafts? - ANSWER Spur-gear operator
The teeth on each gear of a bevel-gear operator
are angled to what degree so that they
IS
will mesh with the teeth of a mating gear? - ANSWER 45 degrees
The chain used on a chain operator is brought to within what distance of the working
M
floor level? - ANSWER 3 feet
O
Before installing a large valve, ensure that what items are in place? - ANSWER
Final supports and hangers
A
When valves are stored, ensure that all open
ends _____. - ANSWER have end protectors
N
When valves are installed with the stem down, the part of the valve that will trap
JP
sediment is the_____. - ANSWER bonnet
Which type of valve, when installed, can have the pressure on either side? - ANSWER
Gate
When choosing among valves, the valve type that would have the largest amount of
pressure drop is the_____. - ANSWER globe valve
Quiz 1 questions and
Answers all correct and
A
verified 2024!
VI
TU
Gate valves should not be used to _____. - ANSWER throttle flow
The main advantage of using gate valves instead
of globe valves is that the gate valves ________. - ANSWER have less flow
IS
restriction
Which of the following valves is a rotary action
M
valve? - ANSWER Ball
O
Which of the following valves is easily adapted to multiport construction? - ANSWER
Plug
A
A globe valve that closes against the direction
of fluid flow is said to be _____ . - ANSWER Flow-to-open
N
One disadvantage of the globe valve is ______. - ANSWER high head loss on the
JP
downstream side
A simpler version of the globe valve is the _______. - ANSWER angle valve
Which valve's discharge conditions are so favorable
that many control valves are based on it? - ANSWER Angle
A needle valve may be used when an application
requires_____. - ANSWER fine adjustment of flow
, Safety valves are commonly installed_____ - ANSWER vertically
Relief valves are normally used in liquid services. - ANSWER True
A swing check valve requires a counterweight
if used_____ - ANSWER in a vertical flow
In a swing check valve, the amount that the disc is open is determined by the_____ -
ANSWER volume of liquid moving through the
A
valve
VI
Why are ball check valves recommended for use in lines in which the fluid pressure
changes rapidly? - ANSWER Lack of noise
TU
Which type of gear operator is used to connect
parallel shafts? - ANSWER Spur-gear operator
The teeth on each gear of a bevel-gear operator
are angled to what degree so that they
IS
will mesh with the teeth of a mating gear? - ANSWER 45 degrees
The chain used on a chain operator is brought to within what distance of the working
M
floor level? - ANSWER 3 feet
O
Before installing a large valve, ensure that what items are in place? - ANSWER
Final supports and hangers
A
When valves are stored, ensure that all open
ends _____. - ANSWER have end protectors
N
When valves are installed with the stem down, the part of the valve that will trap
JP
sediment is the_____. - ANSWER bonnet
Which type of valve, when installed, can have the pressure on either side? - ANSWER
Gate
When choosing among valves, the valve type that would have the largest amount of
pressure drop is the_____. - ANSWER globe valve
