NEIEP 800 Final Review Exam Questions and
Correct Answers
What is the minimum height of barricade in place around an open wellway?
42 inches
What is the maximum angle of inclination for moving walks?
12 degrees
What is the major advantage of a hydraulic elevator?
Requires less building structural support
If all other elements in a hydro elevator remain the same, what would be the effect of
increasing the size of the oil line?
Rate of flow is reduced
What tool is used to check a jack hole for plumb?
Spider bob
What is the operating pressure of a hydro elevator with a gross weight of 2500lbs and a
plunger area of 20 square in?
125psi (2500/20)
An oil reservoir is 22in long and 24in wide, how many gallons of oil will it take to fill it
to a depth of 18in?
42gal
(22x24x18 = 9504) (9504/231= 41.14)
, Why is it important to follow a welding procedure using a sequence of short welds on
opposite sides of the cylinder?
To prevent warping of cylinder
If all other elements of a hydro elevator remain the same, what would be the effect of
increasing the diameter of the plunger?
System pressure would be reduced
If the jack unit is installed in the well hole long before the elevator will be completed,
how do you prevent rusting of the plunger?
Fill with oil
Which of the following valves is not operated electrically?
Pressure relief valve
What device prevents the plunger from leaving the jack assembly?
The stop ring
What is the advantage of wye-delta starting?
Starting current is lowered
What device cushions pulsations in the oil caused by the pump?
Silencer
How can you lower a hydro elevator without electrical power?
With manual lowering valve
What is the assembly called that supports the platform of a hydro elevator?
Correct Answers
What is the minimum height of barricade in place around an open wellway?
42 inches
What is the maximum angle of inclination for moving walks?
12 degrees
What is the major advantage of a hydraulic elevator?
Requires less building structural support
If all other elements in a hydro elevator remain the same, what would be the effect of
increasing the size of the oil line?
Rate of flow is reduced
What tool is used to check a jack hole for plumb?
Spider bob
What is the operating pressure of a hydro elevator with a gross weight of 2500lbs and a
plunger area of 20 square in?
125psi (2500/20)
An oil reservoir is 22in long and 24in wide, how many gallons of oil will it take to fill it
to a depth of 18in?
42gal
(22x24x18 = 9504) (9504/231= 41.14)
, Why is it important to follow a welding procedure using a sequence of short welds on
opposite sides of the cylinder?
To prevent warping of cylinder
If all other elements of a hydro elevator remain the same, what would be the effect of
increasing the diameter of the plunger?
System pressure would be reduced
If the jack unit is installed in the well hole long before the elevator will be completed,
how do you prevent rusting of the plunger?
Fill with oil
Which of the following valves is not operated electrically?
Pressure relief valve
What device prevents the plunger from leaving the jack assembly?
The stop ring
What is the advantage of wye-delta starting?
Starting current is lowered
What device cushions pulsations in the oil caused by the pump?
Silencer
How can you lower a hydro elevator without electrical power?
With manual lowering valve
What is the assembly called that supports the platform of a hydro elevator?
