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Test your basic knowledge |
Mechanical Engineering
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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. Combustion of fuel mixture ignited by spark plug
Couple
Velocity
Second Stroke (2 Stroke Engine)
Hybrid
2. When the work done by the effort exceeds the work done by the load - the load...
Forces
Internal Combustion Engine Types
Derived Dimension
will move
3. A combination of components
Pythagorean Theorem
Moment Arm Equation
Tension
System
4. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Statics
Weight
Moment Arm
Power
5. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Hybrid
Law of Conservation of Mass
Weight
Area Equation
6. Describes how applied forces bring a body into rest or equilibrium
Hydraulic Cylinders
Work
Third Stroke (rotary)
Statics
7. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Power
Pascal's Principle
Gravity
Acceleration
8. Applied at an angle or parallel to a surface
Pressure Equation
Fourth Stroke (rotary)
Dynamics
Shear
9. Pistons connected to crankshaft -1 stroke up - 1 stroke down of the piston -1 rotation of the piston -Problems: high emissions - noisy - inefficient - high vibrations - unburnt fuel - burnt oil -Benefits: small and light -Being phased out in USA - i.
2 Stroke Engine
Base Dimensions
Drum Brakes
Law of Conservation of Mass
10. Translation (slide) -Rotate -Slide and Rotate Together
Rotation
Area
Third Stroke (4 Stroke Engine)
Result of Applying a force to a rigid body at rest
11. Fuel is injected and combusts due to temperature of compressed air
Newton's Second Law
Third Stroke (Diesel Engine)
Aerodynamics
Force lets us do work on a system
12. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Surroundings
Gravity
Units for Pressure
US Customary
13. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Area of a circle equation
Dynamics
Pascal's Principle
Closed System
14. Body in motion (car)
Couple
2 Stroke Engine
Dynamics
Volume
15. 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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16. Exhaust
Dynamics
Newton's Second Law
Internal Combustion Engine Types
Fourth Stroke (Diesel Engine)
17. Work/force or vertical distance/sloping distance
Pythagorean Theorem Equation
Power Equation
Equation for Mechanical Advantage regarding inclined planes
Surroundings
18. Air is compressed - work is done on the system
Mechanics describe how forces affect a body
Second Stroke (Diesel Engine)
Fluid
Pythagorean Theorem
19. ICE generates electricity for electric battery -Electric motor turns wheels
Second Stroke (4 Stroke Engine)
Hybrid Series
Hybrid
Surroundings
20. Psi - newtons - pascals
Mechanics
Units for Pressure
Common Brake Characteristics
Diesel Engine
21. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
Area of a circle equation
Rotary
Mechanics describe how forces affect a body
Rotation
22. 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
Conversions
Common Brake Characteristics
Hydraulics
Moment Arm
23. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Hydraulic Cylinders
First Stroke (rotary)
Base Dimensions
Gravity
24. Force without machine/Force with machine
Mechanical Advantage Equation
Torque
Newton's Second Law
Mass
25. Combustion ignited by spark plug and materials are compressed
no movement
Third Stroke (4 Stroke Engine)
Surroundings
Tension
26. Same pressure - work - volume - Different forces and distances
Second Stroke (2 Stroke Engine)
Hydraulic Cylinders
Acceleration
Fluids
27. 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
Hydraulic Cylinders
Tension
Translation
28. Compression of fuel mix
Fourth Stroke (4 Stroke Engine)
Applied Brakes
Hybrid Series
Second Stroke (rotary)
29. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Second Stroke (2 Stroke Engine)
Inclined Plane
Area Equation
Area
30. Exhaust of combustion products
Fourth Stroke (rotary)
Fourth Stroke (4 Stroke Engine)
Translation
First Stroke (4 Stroke Engine)
31. More compact (size of beer keg) - No valves -Benefits: fewer parts - lower engine weight Problems: seal - lower inertia forces -1 rotar=3 to 4 pistons
Rotary
More than one force
Temperature
Hybrid
32. When fluid is at rest
First Stroke (2 Stroke Engine)
Dynamics
Hydrostatics
Gravity
33. When the moving fluid is a gas
Aerodynamics
Third Stroke (4 Stroke Engine)
Length
Second Stroke (rotary)
34. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Common Brake Characteristics
Dynamics
Compression
Pythagorean Theorem
35. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Moment Arm
Force lets us do work on a system
Pythagorean Theorem Equation
Couple
36. 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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37. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Units
Base Dimensions
Power Equation
Moment Arm Equation
38. Piston travels up and both plugs are closed
Newton's Third Law
Second Stroke (4 Stroke Engine)
Component
Machine
39. Rotation will not occur - but translation might occur
Mechanical Advantage
If the force is applied at the center of the rotation
Mechanical Engineering
Fluid Power
40. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force
Engineers and scientists need a common language
Hydraulic Cylinders
Base Dimensions
Dynamics
41. An indication of kinetic energy of mass at the molecular level
Pythagorean Theorem
Temperature
More than one force
Derived Dimension
42. Length x Width x Height
Diesel Engine
Third Stroke (Diesel Engine)
Volume
Surroundings
43. Force/Area
4 Stroke Engine
Moment Arm Equation
Gravity
Pressure Equation
44. Combine two or more power sources - locomotives - buses (diesel- electric) -Submarines (Nuclear- electric) -Components:gas engine - fuel tank - electric motor - generator - batteries - transmission -2 motors: Internal Combustion Engine and Electric E
Hybrid
US Customary
Inclined Plane
Pythagorean Theorem Equation
45. 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
Second Stroke (rotary)
Mechanical Engineering
Work
Rotation
46. The magnitude of something in a particular direction
System
Static
Length
Engineers and scientists need a common language
47. When the fluid is in motion
Dimension
Static
Hydrodynamics
Base Dimensions
48. Mass x acceleration
Fluids
Work
Force Equation
Newton's First Law of Motion
49. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Fourth Stroke (4 Stroke Engine)
Gravity
Hybrid Parallel
Area Equation
50. Intake of fuel and air mixture - compression of mixture by piston
Shear
First Stroke (2 Stroke Engine)
Weight
2 Stroke Engine
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