NEIEP 800 EXAM:AN A+ GUIDE WITH LATEST KEY
QUESTIONS AND ANSWERS
If a hydraulic elevator will not run down, what is the first thing you should check?
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?
In pounds per square inch PSI
What is the name of the scientific principle that allows a hydraulic elevator to operate?
Pascal's Law
How often must a static load test be performed?
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?
Multiply pressure times area PxA=F
How many cubic inches are there in one gallon?
231
What is the area of a 6" plunger?
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?
200 psi F/A=PSI
How many gallons of oil will be needed to raise a 4" plunger 25 feet?
16.3 gallons AxV/231 (12.56x300" / 231)
How is the duty of a hydraulic elevator rated?
Speed and capacity
When a hydraulic elevator is at rest at floor level, what valves are open?
Up valve
What is another term for up slowdown?
QUESTIONS AND ANSWERS
If a hydraulic elevator will not run down, what is the first thing you should check?
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?
In pounds per square inch PSI
What is the name of the scientific principle that allows a hydraulic elevator to operate?
Pascal's Law
How often must a static load test be performed?
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?
Multiply pressure times area PxA=F
How many cubic inches are there in one gallon?
231
What is the area of a 6" plunger?
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?
200 psi F/A=PSI
How many gallons of oil will be needed to raise a 4" plunger 25 feet?
16.3 gallons AxV/231 (12.56x300" / 231)
How is the duty of a hydraulic elevator rated?
Speed and capacity
When a hydraulic elevator is at rest at floor level, what valves are open?
Up valve
What is another term for up slowdown?
