815, 845, 840, NEIEP 800 final Exam
Questions And Answers
See if it will run down by opening the manual lowering valve -
correct answer ✅If a hydraulic elevator will not run down, what is
the first thing you should try?
In pounds per square inch -
correct answer ✅When calculating hydraulic system pressure, the
force is expressed in pounds and the area of the plunger is
measured in square inches. How is the pressure expressed?
Pascal's Law -
correct answer ✅What is the name of the scientific principle that
allows a hydraulic elevator to operate?
Every year -
correct answer ✅How often must a static load test be performed?
Multiply pressure times area -
correct answer ✅If a gauge is used to measure system pressure
with the elevator at rest and the size of the plunger is known, how
can the total weight of the elevator be calculated?
,815, 845, 840, NEIEP 800 final Exam
Questions And Answers
231 -
correct answer ✅How many cubic inches are there in one gallon?
28.27 square inches -
correct answer ✅What is the area of a 6" plunger?
200 psi -
correct answer ✅A weight (force) of 5,000 lbs. is placed on a
hydraulic plunger having an area of 25 square inches. What is the
system pressure?
16.3 gallons -
correct answer ✅How many gallons of oil will be needed to raise a
4" plunger 25 feet?
Speed and capacity -
correct answer ✅How is the duty of a hydraulic elevator rated?
Up valve -
correct answer ✅When a hydraulic elevator is at rest at floor level,
what valves are open?
,815, 845, 840, NEIEP 800 final Exam
Questions And Answers
Up transition -
correct answer ✅What is another term for up slowdown?
To prevent oil from flowing from the jack to the reservoir -
correct answer ✅Why is a check valve required?
Rate of flow in gpm -
correct answer ✅What determines the full speed of a hydraulic
elevator?
The down valve is closed, the check valve is closed, and the up
valve is open -
correct answer ✅Which describes the operation of a typical
hydraulic block valve with an elevator landed at the floor?
Full load up pressure -
correct answer ✅What is the definition of "working pressure"?
Up start bypass and relief valve -
correct answer ✅What two functions are combined into a single
valve?
, 815, 845, 840, NEIEP 800 final Exam
Questions And Answers
The up limit switches -
correct answer ✅In order to perform a plunger stop test, which
circuits would have to be jumpered out?
Check for oil in the reservoir -
correct answer ✅If the pump makes a hammering noise, what
would be the first thing to check?
An underground leak -
correct answer ✅You pull the main line disconnect switch and
close the line shutoff; the car slowly drifts downward. You don't
observe any oil leaking anywhere. What does this indicate?
carriage, seat, and track -
correct answer ✅What are the three major components that make
up a stairway chairlift?
The rise must be less than the tread -
correct answer ✅In order for a stairway to be less than the
maximum allowable angle for a stairway chairlift installation, what
must the relationship between the rise and the tread be?
Questions And Answers
See if it will run down by opening the manual lowering valve -
correct answer ✅If a hydraulic elevator will not run down, what is
the first thing you should try?
In pounds per square inch -
correct answer ✅When calculating hydraulic system pressure, the
force is expressed in pounds and the area of the plunger is
measured in square inches. How is the pressure expressed?
Pascal's Law -
correct answer ✅What is the name of the scientific principle that
allows a hydraulic elevator to operate?
Every year -
correct answer ✅How often must a static load test be performed?
Multiply pressure times area -
correct answer ✅If a gauge is used to measure system pressure
with the elevator at rest and the size of the plunger is known, how
can the total weight of the elevator be calculated?
,815, 845, 840, NEIEP 800 final Exam
Questions And Answers
231 -
correct answer ✅How many cubic inches are there in one gallon?
28.27 square inches -
correct answer ✅What is the area of a 6" plunger?
200 psi -
correct answer ✅A weight (force) of 5,000 lbs. is placed on a
hydraulic plunger having an area of 25 square inches. What is the
system pressure?
16.3 gallons -
correct answer ✅How many gallons of oil will be needed to raise a
4" plunger 25 feet?
Speed and capacity -
correct answer ✅How is the duty of a hydraulic elevator rated?
Up valve -
correct answer ✅When a hydraulic elevator is at rest at floor level,
what valves are open?
,815, 845, 840, NEIEP 800 final Exam
Questions And Answers
Up transition -
correct answer ✅What is another term for up slowdown?
To prevent oil from flowing from the jack to the reservoir -
correct answer ✅Why is a check valve required?
Rate of flow in gpm -
correct answer ✅What determines the full speed of a hydraulic
elevator?
The down valve is closed, the check valve is closed, and the up
valve is open -
correct answer ✅Which describes the operation of a typical
hydraulic block valve with an elevator landed at the floor?
Full load up pressure -
correct answer ✅What is the definition of "working pressure"?
Up start bypass and relief valve -
correct answer ✅What two functions are combined into a single
valve?
, 815, 845, 840, NEIEP 800 final Exam
Questions And Answers
The up limit switches -
correct answer ✅In order to perform a plunger stop test, which
circuits would have to be jumpered out?
Check for oil in the reservoir -
correct answer ✅If the pump makes a hammering noise, what
would be the first thing to check?
An underground leak -
correct answer ✅You pull the main line disconnect switch and
close the line shutoff; the car slowly drifts downward. You don't
observe any oil leaking anywhere. What does this indicate?
carriage, seat, and track -
correct answer ✅What are the three major components that make
up a stairway chairlift?
The rise must be less than the tread -
correct answer ✅In order for a stairway to be less than the
maximum allowable angle for a stairway chairlift installation, what
must the relationship between the rise and the tread be?
