1|Page
NYC NYCHA MAINTENANCE WORKER EXAMINATION
COMPLETE VERIFIED QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR JUST
RELEASED
What type of valve is used to reduce water hammer? -
Answer-Blow-off valve or pressure relief valve
What type of bacteria is always looked for in a water test?
- Answer-Coliform
Anytime that potable and non-potable water systems are
connected it is called what? - Answer-Cross-Connection
The main line is full water and under pressure is called
what? - Answer-Wet tap or hot tap.
When spreading asphalt what is used for larger areas? -
Answer-Asphalt spreaders. 8 foot. Wide tractor type
vehicles.
When spreading asphalt what is used for smaller areas? -
Answer-A shovel and a lute can be used.
,2|Page
A lute will have a long handle how long? - Answer-5 to 6
feet long.
What is a lute? - Answer-Similar to a rake that is used for
leveling the asphalt over the repair area before it is
compacted
The rake end is how long? - Answer-3 feet wide with a flat,
smooth blade on the edge and very small teeth or it can
be flat on the opposite edge.
How much does water weigh? - Answer-8.34 Lbs per
gallon
The force of water is measured using ? - Answer-PSI
Pounds per square inch
For every foot in elevation the waters force is increased by
how much? - Answer-2.3 Lbs per square inch
How much asphalt should be above the desire finished
level? - Answer-3/4 of an inch
, 3|Page
What is concrete used for? - Answer-Gutter and storm
drains, as well as collars around water valves, manholes
and drive approaches.
Drive approaches are usually a part of what? - Answer-A
streets gutter system and due to vehicular traffic across
them, they are made stronger than the adjacent gutter.
What happens when a water valve is shut off suddenly? -
Answer-The force of the water greatly increases at that
location; at the valve.
What is water hammer? - Answer-The increase pressure
then rebounds back through the pipe.
How do you avoid water hammer? - Answer-To shut the
valve slowly, so the water momentum is reduced before it
comes to a stop
Drive approaches are made using concrete that is how
thick? - Answer-6 inches
NYC NYCHA MAINTENANCE WORKER EXAMINATION
COMPLETE VERIFIED QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR JUST
RELEASED
What type of valve is used to reduce water hammer? -
Answer-Blow-off valve or pressure relief valve
What type of bacteria is always looked for in a water test?
- Answer-Coliform
Anytime that potable and non-potable water systems are
connected it is called what? - Answer-Cross-Connection
The main line is full water and under pressure is called
what? - Answer-Wet tap or hot tap.
When spreading asphalt what is used for larger areas? -
Answer-Asphalt spreaders. 8 foot. Wide tractor type
vehicles.
When spreading asphalt what is used for smaller areas? -
Answer-A shovel and a lute can be used.
,2|Page
A lute will have a long handle how long? - Answer-5 to 6
feet long.
What is a lute? - Answer-Similar to a rake that is used for
leveling the asphalt over the repair area before it is
compacted
The rake end is how long? - Answer-3 feet wide with a flat,
smooth blade on the edge and very small teeth or it can
be flat on the opposite edge.
How much does water weigh? - Answer-8.34 Lbs per
gallon
The force of water is measured using ? - Answer-PSI
Pounds per square inch
For every foot in elevation the waters force is increased by
how much? - Answer-2.3 Lbs per square inch
How much asphalt should be above the desire finished
level? - Answer-3/4 of an inch
, 3|Page
What is concrete used for? - Answer-Gutter and storm
drains, as well as collars around water valves, manholes
and drive approaches.
Drive approaches are usually a part of what? - Answer-A
streets gutter system and due to vehicular traffic across
them, they are made stronger than the adjacent gutter.
What happens when a water valve is shut off suddenly? -
Answer-The force of the water greatly increases at that
location; at the valve.
What is water hammer? - Answer-The increase pressure
then rebounds back through the pipe.
How do you avoid water hammer? - Answer-To shut the
valve slowly, so the water momentum is reduced before it
comes to a stop
Drive approaches are made using concrete that is how
thick? - Answer-6 inches
