Update) Questions and
Verified Answers 100% Correct {Grade A}
If a hydraulic elevator will not run down, what is the first thing you should try? -
correct answer See if it will run down by opening the manual lowering valve
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? -
correct answer In pounds per square inch
What is the name of the scientific principle that allows a hydraulic elevator to
operate? -correct answer Pascal's Law
How often must a static load test be performed? -correct answer Every year
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? -correct
answer Multiply pressure times area
How many cubic inches are there in one gallon? -correct answer 231
What is the area of a 6" plunger? -correct answer 28.27 square inches
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? -correct answer 200 psi
,815, 845, 840, NEIEP 800 Final Exam (Latest
Update) Questions and
Verified Answers 100% Correct {Grade A}
How many gallons of oil will be needed to raise a 4" plunger 25 feet? -correct answer
16.3 gallons
How is the duty of a hydraulic elevator rated? -correct answer Speed and capacity
When a hydraulic elevator is at rest at floor level, what valves are open? -correct
answer Up valve
What is another term for up slowdown? -correct answer Up transition
Why is a check valve required? -correct answer To prevent oil from flowing from the
jack to the reservoir
What determines the full speed of a hydraulic elevator? -correct answer Rate of flow
in gpm
Which describes the operation of a typical hydraulic block valve with an elevator
landed at the floor? -correct answer The down valve is closed, the check valve is
closed, and the up valve is open
What is the definition of "working pressure"? -correct answer Full load up pressure
,815, 845, 840, NEIEP 800 Final Exam (Latest
Update) Questions and
Verified Answers 100% Correct {Grade A}
What two functions are combined into a single valve? -correct answer Up start bypass
and relief valve
In order to perform a plunger stop test, which circuits would have to be jumpered
out? -correct answer The up limit switches
If the pump makes a hammering noise, what would be the first thing to check? -
correct answer Check for oil in the reservoir
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? -correct answer An underground leak
What are the three major components that make up a stairway chairlift? -correct
answer carriage, seat, and track
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? -
correct answer The rise must be less than the tread
According to code, what is the highest degree angle stairway onto which a chairlift
can be installed? -correct answer 45
, 815, 845, 840, NEIEP 800 Final Exam (Latest
Update) Questions and
Verified Answers 100% Correct {Grade A}
5. How is the right or left side of a stairway determined? -correct answer 5. Standing
at the bottom and looking up
6. Which of the following is the minimum rated load for both a one- and a two-seat
chairlift, respectively? -correct answer 6. 250lb, 400 lb
7. Which of the following would be the correct placement of brackets supporting
tracks on a stairway chairlift? -correct answer 7. first tread at bottom, first tread
below the top, above and below rail splices and center of each rail section
8. What are the most common types of drive units for stairway chairlifts? -correct
answer 8. Winding drum and rack & pinion
9. What type of switches are used as call/send switches at the top and bottom of a
stairway chairlift? -correct answer 9. Constant pressure switches
10. The edge of the footrest facing the upper landing should be no more than how
many inches, measured vertically, above the step or landing? -correct answer 10. 24
11. How are safeties applied on a rack and pinion driven inclined stairway platform
lift? -correct answer 11. A safety governor is used.