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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. Distance between the fulcrum and the load
block and tackle
subsystems
load arm
formula for pressure
2. 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.
subsystems
multiplying gears
speed ratio
work output
3. Heated water to make steam and then used to move a piston in a circular motion
steam turbine
Pneumatic systems
kinetic energy
pinion
4. Required a large shift in population from rural areas to the cities.
effort force
Hydraulic systems
The Industrial Revolution
internal combustion engine
5. Energy of motion
kinetic energy
mass production
friction
wheel and axle
6. A group of parts that work together to perform a function
system
multiplying gears
parallel gears
gears
7. Science of designing machines to suit people
ergonomics
driving gear
formula for MA
efficiency
8. A measure of the amount of force applied to a given area
formula for pressure
pressure
winch
internal combustion engine
9. Bigger gear
multiplying gears
efficiency
driving gear
transmission
10. Do not seal the gas (usually air)
gears
Pneumatic systems
efficiency
respiratory system
11. When the driving and the driven gears are the same size
Pascal's Law
parallel gears
circulatory system
reducing gears
12. (driven gear) smaller gear
pinion
pulley
pascal
block and tackle
13. Transferred to kinetic energy in machines in a dam to generate electrical energy
steam turbine
gravitational potential energy
inclined plane
effort advantage
14. Work done by machine / work done to make the machine operate x100
formula for efficiency
ergonomics
formula for pressure
internal combustion engine
15. Several simple machines all working together in a system
Work input
formula for pressure
complex machines
efficiency
16. A large gear driving a smaller gear decreases torque and increases speed in the driven gear
pressure
multiplying gears
formula for pressure
speed
17. A pair of wheels that have teeth that interlink. When they rotate together - one gear wheel transfers turning motion and force to the other.
gears
reducing gears
complex machines
valve
18. Distance between the fulcrum and the effort force
formula for work
friction
effort arm
potential energy
19. Pressure applied to an enclosed fluid is transmitted undiminished in all directions throughout the fluid and perpendicular to the walls of the container.
20. Do the work easier
Pneumatic systems
effort advantage
speed
bones
21. Hydraulic system in your body
circulatory system
effort force
formula for efficiency
joule
22. Or ramp - makes it easier to move a load higher than it is - but - it has to be moved over a much longer distance.
gravitational potential energy
work output
inclined plane
effort force
23. Use the force of a liquid in a confined space - apply two essential characteristic of fluids - their incompressibility and their ability to transmit pressure
speed
valve
Hydraulic systems
pulley
24. Is the work needed to use - or operate the machine
work output
3 classes of levers
Work input
valve
25. Act like levers
ergonomics
bones
Lever
valve
26. Is the work done by the machine
work
work output
Pneumatic systems
gravitational potential energy
27. Force of the small piston/area of the small piston = Force of the large piston/Area of the large piston
formula for pressure in hydraulics
speed advantage
system
Pascal's Law
28. Work unit
joule
load arm
respiratory system
bones
29. Unit of measurement for pressure
pascal
formula for work
efficiency
potential energy
30. A small gear driving a larger gear increases torque and reduces speed in the driven gear
reducing gears
formula for pressure
mechanical advantage
load
31. Pneumatic system in your body
steam engine
cost of MA
respiratory system
formula for efficiency
32. Heated water to make steam and then used to move a piston. When the piston moved - it caused an attached rod (which was connected to a crankshaft) to move as well - making the engine work.
Pneumatic systems
internal combustion engine
steam engine
formula for MA
33. To increase the force on the output piston - the input piston must move through a greater distance
cost of MA
formula for efficiency
steam turbine
gears
34. 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
kinetic energy
winch
effort force
formula for pressure
35. 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
ergonomics
driving gear
input piston
36. A combination of two wheels of different diameters that turn together - a lever that rotates in a circle around a center point or fulcrum.
Pascal's Law
wheel and axle
effort arm
subsystems
37. Are used to overcome the frictional force of the machine
formula for pressure
kinetic energy
lubricants
Hydraulic systems
38. Within a machine are groups of parts that perform specific functions - such as braking or steering
Pneumatic systems
valve
subsystems
The Industrial Revolution
39. Reason that machines are never 100% efficient
internal combustion engine
fulcrum
block and tackle
friction
40. The rate of motion that an object changes position
mechanical advantage
speed
joule
transmission
41. Force exerted on the lever to make it move
formula for work
formula for MA
effort force
friction
42. 1st class - 2nd class - 3rd class
Work input
mass production
The Industrial Revolution
3 classes of levers
43. Stored energy
formula for pressure in hydraulics
parallel gears
speed advantage
potential energy
44. F x d
effort arm
internal combustion engine
formula for work
The Industrial Revolution
45. Load Force (FL)/Effort Force (FE)
transmission
formula for MA
gears
load
46. Mass of the object lifted by the lever
pinion
joule
potential energy
load
47. Energy is transferred from one place to another - and no energy is changed or converted.
pinion
transmission
Pneumatic systems
gears
48. Used to apply force to the fluid - which creates pressure in the fluid
steam engine
input piston
pulley
gravitational potential energy
49. The production of large quantities of a standardized article (often using assembly line techniques)
pascal
load arm
circulatory system
mass production
50. F/A
Work input
joule
formula for pressure
formula for pressure in hydraulics