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Test your basic knowledge |
Mechanical Engineering
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. (Force)(Distance)/Seconds
Length
Fourth Stroke (rotary)
Power Equation
Machine
2. Translation (slide) -Rotate -Slide and Rotate Together
Result of Applying a force to a rigid body at rest
Area of a circle equation
Pressure
Diesel Engine
3. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Internal Combustion Engine Types
Fluid Power
Hydraulics
Units
4. If the force needed to operate the machine (input force) is less than the force being opposed or the load being moved (output force) -The ratio of the output force divided by the input force -If the number is greater than one - there is a mechanical
Hybrid Parallel
Mechanics
Third Stroke (4 Stroke Engine)
Mechanical Advantage
5. A pull on an object
Tension
Force Equation
Fourth Stroke (4 Stroke Engine)
Volume
6. Every object continues in motion in a straight line unless acted upon by some force -Every object at rest continues at rest unless acted upon by a force -So forces cause a change in an object's state of motion
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7. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Mechanical Advantage Equation
Hybrid Series
Hybrid Parallel
Units
8. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Rotary
more than one force
Acceleration
Moment Arm
9. An application of Pascal's Principle (trading distance and force while doing the same amount of work) -Gives a mechanical advantage -The muscles of machines - used to produce very large forces - use a fluid under pressure (gas is low pressure and liq
Hydraulics
Second Stroke (4 Stroke Engine)
Rotation
Force Equation
10. Describes a physical property of anything - What we are measuring
Dimension
Internal Combustion Engine Types
Mechanics
Velocity
11. (pi) x (radius)^2
Newton's Third Law
Base Dimensions
Area of a circle equation
more than one force
12. Intake of fuel and air mix
First Stroke (rotary)
Direction of Forces
Conversions
Moment Arm Equation
13. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Fourth Stroke (rotary)
Area
Direction of Forces
Common Brake Characteristics
14. When fluid is at rest
Hydrostatics
more than one force
Machine
Fluid
15. One that pushes on an object
decrease
First Stroke (2 Stroke Engine)
Conversions
Compression
16. Air is drawn in
System International (SI)
First Stroke (Diesel Engine)
Power
Aerodynamics
17. Body at rest or is in equilibrium (wall)
Length
Fluid
Static
Law of Conservation of Mass
18. Length x Width x Height
Pythagorean Theorem
Third Stroke (Diesel Engine)
Volume
Hybrid Parallel
19. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Hydrodynamics
Component
Torque
Newton's Third Law
20. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force
no movement
Second Stroke (2 Stroke Engine)
Base Dimensions
Component
21. Combustion of fuel mixture ignited by spark plug
System
Units
Volume
Second Stroke (2 Stroke Engine)
22. The standard system of units that uses base 10 and used in the rest of the world. US does not use - but Great Britain does - Base Units: mass - kilograms (kg) - length- meters (m) - and time-Seconds (S) - Force is a derived unit measured in newtons (
System International (SI)
Pressure
Weight
Volume
23. Mass can neither by created nor destroyed - only transformed
Steam Engine
Aerodynamics
First Stroke (Diesel Engine)
Law of Conservation of Mass
24. Force and mass are proportional to each other (F=ma) -If F increases - so does acceleration -Force causes acceleration - More force means more acceleration - same mass - More mass means less acceleration - same force
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25. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Equation for Mechanical Advantage regarding inclined planes
Pythagorean Theorem
Statics
Gravity
26. Psi - newtons - pascals
Fluid Power
Forces
Moment Arm
Units for Pressure
27. Brake pedal and linkage - Master Cylinder - Wheel cylinders (4) - Hydraulic lines - Hydraulic fluid - Mechanical advantage is provided by the foot pedal to the booster (level) - A greater force is applied on the wheel cylinders than on the brake peda
Moment Arm
Component
Applied Brakes
4 Stroke Engine
28. Compression-Tension-Shear
Third Stroke (Diesel Engine)
Second Stroke (2 Stroke Engine)
Direction of Forces
Applied Brakes
29. Length x Width
Open System
Area Equation
Tension
Second Stroke (rotary)
30. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Diesel Engine
more than one force
Fourth Stroke (4 Stroke Engine)
Base Dimensions
31. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Third Stroke (Diesel Engine)
Forces
Third Stroke (rotary)
will move
32. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Dynamics
Forces and Vectors
Gravity
Mechanical Engineering
33. Describes how applied forces bring a body into rest or equilibrium
Translation
Statics
Power
Engineers and scientists need a common language
34. A system adopted from an old British system of units in the 13th century -Engineering system -Units: length- foot (ft) - time- second (s) - force-(lbs) - Mass is a derived unit called a slug -Political/Economic choice -Awkward
US Customary
Compression
Mechanical Advantage
Fluid
35. Force without machine/Force with machine
Fluid
Forces
Second Stroke (Diesel Engine)
Mechanical Advantage Equation
36. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Machine
Fluid
Second Stroke (Diesel Engine)
Weight
37. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Power Equation
Dimension
Pythagorean Theorem
Second Stroke (4 Stroke Engine)
38. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Drum Brakes
Fourth Stroke (4 Stroke Engine)
Vectors
First Stroke (Diesel Engine)
39. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Gravity
Open System
Work
Acceleration
40. Force x Distance
Hybrid Parallel
Moment Arm Equation
Derived Dimension
Third Stroke (4 Stroke Engine)
41. Piston travels up and both plugs are closed
Hybrid Series
Moment Arm Equation
Rotary
Second Stroke (4 Stroke Engine)
42. Tells us how fast work is done - varies with time (more power is needed to do work in less time - and less power is needed to do work in more time) =Fd/s -Units: USA: ft- lb/s SI: watts (J/S)
Power
Pressure Equation
Tension
Diesel Engine
43. A combination of components
Pressure
Couple
Pythagorean Theorem
System
44. Allows comparison between different measuring systems and units - Necessary to market internationally
Drum Brakes
Area of a circle equation
First Stroke (rotary)
Conversions
45. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
If the force is applied at the center of the rotation
Fourth Stroke (Diesel Engine)
Tension
Couple
46. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Direction of Forces
Equilibrium
Closed System
Fluids
47. Often a free body has _______ acting on it
Machine
Mechanics
more than one force
4 Stroke Engine
48. The designing of machines that contribute to society and our quality of life - Mechanical engineers apply the principles of mathematics - chemistry - and physics to solve real- world problems
Derived Dimension
Fourth Stroke (rotary)
Base Dimensions
Mechanical Engineering
49. The amount of atoms and molecules in something - Matter is energy that has become solid -An object gains mass when it gains more energy and vice a versa -Units: SI- kgs and USA: Slugs - lbs
Mass
Shear
Result of Applying a force to a rigid body at rest
Hydrodynamics
50. Work/force or vertical distance/sloping distance
Hydrodynamics
Work
Equation for Mechanical Advantage regarding inclined planes
Fourth Stroke (rotary)