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Test your basic knowledge |
Mechanical Systems
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Within a machine are groups of parts that perform specific functions - such as braking or steering
potential energy
subsystems
Lever
parallel gears
2. A measure of the amount of force applied to a given area
Hydraulic systems
pressure
lubricants
fulcrum
3. The relationship between the speed of rotations of a smaller gear and a larger gear - can be calculated by dividing the number of driver gear teeth by the number of follower gear teeth.
speed ratio
pressure
The Industrial Revolution
load
4. The ratio of the output to the input of any system - a comparison of the useful work provided by a machine or a system with - the work supplied to the machine or system
efficiency
wheel and axle
mass production
inclined plane
5. Used to control the flow of a fluid. It is a moveable part that controls the flow by opening or closing
pascal
valve
effort force
speed advantage
6. A large gear driving a smaller gear decreases torque and increases speed in the driven gear
lubricants
mechanical advantage
speed
multiplying gears
7. A fixed point
work
gravitational potential energy
formula for efficiency
fulcrum
8. The rate of motion that an object changes position
speed
lubricants
mass production
kinetic energy
9. F/A
formula for pressure
valve
pulley
friction
10. Stored energy
transmission
friction
potential energy
pulley
11. Do the work easier
formula for pressure in hydraulics
pascal
output piston
effort advantage
12. Reason that machines are never 100% efficient
mechanical advantage
winch
friction
gears
13. Work done by machine / work done to make the machine operate x100
formula for efficiency
Work input
steam turbine
speed
14. Mass of the object lifted by the lever
pinion
pascal
fulcrum
load
15. Is done when a force acts on an object to make that object move - a transfer of energy
lubricants
driving gear
work
steam engine
16. Heated water to make steam and then used to move a piston in a circular motion
driving gear
gears
steam engine
steam turbine
17. A group of parts that work together to perform a function
load
circulatory system
system
efficiency
18. Energy is transferred from one place to another - and no energy is changed or converted.
effort arm
transmission
friction
multiplying gears
19. Bigger gear
gears
mechanical advantage
pulley
driving gear
20. Energy of motion
mass production
bones
kinetic energy
mechanical advantage
21. Are used to overcome the frictional force of the machine
pressure
lubricants
transmission
input piston
22. Do not seal the gas (usually air)
formula for pressure
Pneumatic systems
cost of MA
gears
23. A small gear driving a larger gear increases torque and reduces speed in the driven gear
parallel gears
reducing gears
pressure
formula for efficiency
24. Is the work done by the machine
work output
multiplying gears
gears
pressure
25. Science of designing machines to suit people
mechanical advantage
ergonomics
transmission
The Industrial Revolution
26. A combination of two wheels of different diameters that turn together - a lever that rotates in a circle around a center point or fulcrum.
block and tackle
respiratory system
pulley
wheel and axle
27. Hydraulic system in your body
work
circulatory system
kinetic energy
load
28. A rigid bar or plank that can rotate around a fixed point
input piston
internal combustion engine
Lever
formula for work
29. The comparison of the force produced by a machine to the force applied to the machine. (the size of the load vs the size of the force needed to move the load)
parallel gears
efficiency
gears
mechanical advantage
30. 1st class - 2nd class - 3rd class
complex machines
valve
Pneumatic systems
3 classes of levers
31. Used to apply force to the fluid - which creates pressure in the fluid
internal combustion engine
speed advantage
input piston
wheel and axle
32. A pair of wheels that have teeth that interlink. When they rotate together - one gear wheel transfers turning motion and force to the other.
potential energy
gears
effort advantage
work
33. Consists of a wire - rope - or cable moving on a grooved wheel. One or more combinations of wheels and ropes can be fixed in place or moveable - help you lift larger loads.
pulley
gravitational potential energy
transmission
work output
34. Do the work faster
cost of MA
wheel and axle
speed advantage
internal combustion engine
35. The production of large quantities of a standardized article (often using assembly line techniques)
pulley
respiratory system
load
mass production
36. Unit of measurement for pressure
pascal
multiplying gears
system
formula for pressure
37. Work unit
formula for MA
joule
inclined plane
mechanical advantage
38. The combustion occurs inside the engine. The pistons goes through 4 steps: Intake stroke (taking in the fuel) - compression stroke (compressing the fuel- air mixture) - power stroke (the fuel- air mixture is ignited) - exhaust stroke (waste products
internal combustion engine
kinetic energy
respiratory system
friction
39. Pressure applied to an enclosed fluid is transmitted undiminished in all directions throughout the fluid and perpendicular to the walls of the container.
40. Is the work needed to use - or operate the machine
Work input
Pneumatic systems
Hydraulic systems
valve
41. Pneumatic system in your body
transmission
formula for efficiency
inclined plane
respiratory system
42. Use the force of a liquid in a confined space - apply two essential characteristic of fluids - their incompressibility and their ability to transmit pressure
formula for work
driving gear
efficiency
Hydraulic systems
43. Load Force (FL)/Effort Force (FE)
input piston
formula for MA
winch
effort advantage
44. The fluid transfers the pressure from the input piston to the ____________
multiplying gears
load
speed ratio
output piston
45. To increase the force on the output piston - the input piston must move through a greater distance
formula for pressure
pinion
cost of MA
wheel and axle
46. Consists of a small cylinder that has a crank or handle. The axle of the winch acts like the fulcrum - the handle is the effort arm
speed ratio
effort arm
ergonomics
winch
47. Transferred to kinetic energy in machines in a dam to generate electrical energy
gravitational potential energy
fulcrum
lubricants
cost of MA
48. Act like levers
bones
kinetic energy
transmission
joule
49. (driven gear) smaller gear
gears
friction
pinion
ergonomics
50. A very complex combination of pulleys - including fixed and movable is called
3 classes of levers
block and tackle
formula for pressure in hydraulics
Pascal's Law