# Unit 14 Hydraulic Theory And Installation

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1. 300 psi equal:

A) 2.06 kPa
B) 20.68 kPa
C) 206.8 kPa
D) 2068 kPa
2068 kPa
2. In a hydraulic system, how is work transmitted?

A) It travels undiminished through the fluid.
B) By the molecules of oil expanding.
C) Because of the heat generated.
D) By pushing harder.
It travels undiminished through the fluid.
3. In a hydraulic system, if two equal pressures act on two different-sized pistons, which piston would be able to lift the heavier weight?

A) The smaller-diameter piston.
B) The larger-diameter piston
C) Neither of them; they could only lift the same weight.
D) Since the pressure is the same, there could not be a heavier weight lifted.
The larger-diameter piston.
4. What two factors determine the amount of load a hydraulic system can lift.

A) Size of pipe and type of connection.
B) Size of piston and size of pipe.
C) Area of piston and size of pipe.
D) Area of piston and pressure output of pump.
Area of piston and pressure output of pump.
5. The speed of the piston movement is determined by what?

A) Flow of oil through the overspeed valve.
B) Rated flow of the pump.
C) Rated pressure of the pump.
D) Altitude of the system.
Rated flow of the pump.
6. Which force determines the pressure of an elevator system?

A) Gravity
B) Temperature.
C) Viscosity.
D) Area of flow.
Gravity.
7.   Velocity of an elevator in the "down" direction is controlled by:

A) Gravity.
B) Temperature.
C) Viscosity.
D) Area of flow.
Area of flow.
8.   Fluids change viscosity because of:

A) Flow rate.
B) Displacement.
C) Temperature.
D) Air pressure.
Temperature.
9. In the SI system, what is the unit for pressure?

A) N (Newton)
B) M (Meter)
C) Kg (Kilogram)
D) kPa (Kilopascal)
kPa (Kilopascal)
10. To convert inches to millimeters, you:

A) Multiply inches by 25.4
B) Multiply millimeters by 25.4
C) Divide inches by 25.4
D) Divide millimeters by 25.4
Multiply inches by 25.4
11.   To convert pounds per square inch to kilopascals, you:

A) Multiply psi by 6.894
B) Multiply kPa by 6.894
C) Divide psi by 6.894
D) Divide kPa by 6.894
Multiply psi by 6.894
12. To convert Pascals to kilopascals, you:

A) multiply by 10
B) Multiply by 1,000
C) Divide by 10
D) Divide by 1,000
Multiply by 1,000
13. To convert foot-pounds to Nm, you:

A) Multiply Nm by 1.356
B) Multiply foot-pounds by 0.738
C) Multiply Nm by 1,000
D) Multiply foot-pounds by 1.356
Multiply foot-pounds by 1.356
14. To convert pounds to kilograms, you:

A) Multiply pounds by 2.2.
B) Multiply kilograms by 2.2.
C) Divide pounds by 2.2.
D) Divide kilograms by 2.2.
Multiply pounds by 2.2
15.   On a jobsite, when marking the location of the hole in a field, you should:

A) Use spray paint on the ground to mark the spot.
B) Use colored string from site markers to mark the spot.
C) Ask the contractor to watch the spot for you.
D) Use long, deeply planted stakes.
Use long, deeply planted stakes.
16. Well holes for hydraulic elevators can be drilled:

A) By the well driller or the elevator constructor.
B) Only by an elevator constructor.
C) Only by a well driller.
D) By the general  contractor.
By the well driller or the elevator constructor.
 Author: winkythagreat ID: 235798 Card Set: Unit 14 Hydraulic Theory And Installation Updated: 2013-09-19 15:48:46 Tags: Hydraulic theory installation Folders: Description: cet Show Answers: