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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. 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)
Surroundings
Equation for Mechanical Advantage regarding inclined planes
Power
Derived Dimension
2. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Acceleration
Dynamics
Units
Area of a circle equation
3. Fuel is injected and combusts due to temperature of compressed air
Couple
Common Brake Characteristics
Length
Third Stroke (Diesel Engine)
4. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Acceleration
Force Equation
Force lets us do work on a system
Closed System
5. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Surroundings
Weight
decrease
Couple
6. Describes how applied forces bring a body into rest or equilibrium
Statics
Pressure Equation
Newton's First Law of Motion
Drum Brakes
7. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Fourth Stroke (4 Stroke Engine)
Mechanical Advantage
Mechanical Engineering
Tension
8. Air is compressed - work is done on the system
Second Stroke (Diesel Engine)
Area
Power Equation
Forces
9. Compression of fuel mix
Static
Second Stroke (rotary)
Fourth Stroke (rotary)
Volume
10. When the work done by the effort exceeds the work done by the load - the load...
will move
Compression
Temperature
Engineers and scientists need a common language
11. A pull on an object
Tension
will move
Applied Brakes
Dimension
12. Compression-Tension-Shear
Steam Engine
Base Dimensions
Fourth Stroke (Diesel Engine)
Direction of Forces
13. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Metrology
Area
Mechanics
Hydrostatics
14. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Temperature
Dimension
Internal Combustion Engine Types
Rotary
15. Can be applied at a time on an object
First Stroke (2 Stroke Engine)
Statics
More than one force
Engineers and scientists need a common language
16. For every action there is an equal and opposite reaction -Force -F=mg -Earth exerts a force on all of us
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17. ...
Second Stroke (rotary)
Mechanical Engineering
Force lets us do work on a system
Fluid Power
18. Translation (slide) -Rotate -Slide and Rotate Together
Rotation
Result of Applying a force to a rigid body at rest
Pascal's Principle
Moment Arm
19. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Fourth Stroke (Diesel Engine)
Pythagorean Theorem Equation
Forces and Vectors
More than one force
20. ICE generates electricity for electric battery -Electric motor turns wheels
Vectors
Hybrid Series
Hydrodynamics
First Stroke (rotary)
21. Length / Time
Torque
Moment Arm Equation
Velocity
Second Stroke (Diesel Engine)
22. Describes how applied forces bring a body into motion
Dynamics
Forces
Inclined Plane
Vectors
23. Describes a physical property of anything - What we are measuring
Translation
Hybrid
Hydraulics
Dimension
24. When the sum of all forces and the sum of all moments both equal forces - No movement
Fluid Power
Mechanical Advantage Equation
Statics
Equilibrium
25. 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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26. Force/Area
Closed System
Hybrid Series
Pressure Equation
Torque
27. Psi - newtons - pascals
Base Dimensions
Units for Pressure
Fluids
Static
28. 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
Acceleration
Mechanical Engineering
Pythagorean Theorem Equation
Derived Dimension
29. Body at rest or is in equilibrium (wall)
System
Power Equation
Disc Breaks
Static
30. (Force)(Distance)/Seconds
will move
Power Equation
Hybrid
First Stroke (2 Stroke Engine)
31. Length x Width x Height
Volume
If the force is applied away from the center of rotation
Newton's First Law of Motion
Dynamics
32. Varies by location (on earth) - distance (from earth) - and mass (of planet)
System International (SI)
Gravity
Mechanics describe how forces affect a body
Common Brake Characteristics
33. Same pressure - work - volume - Different forces and distances
If the force is applied at the center of the rotation
Pythagorean Theorem
Forces and Vectors
Hydraulic Cylinders
34. Force x Distance
Moment Arm Equation
Pressure
Dynamics
Newton's Third Law
35. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force
Drum Brakes
Base Dimensions
Inclined Plane
Fourth Stroke (Diesel Engine)
36. Combustion ignited by spark plug and materials are compressed
Aerodynamics
Third Stroke (4 Stroke Engine)
Fluid
Steam Engine
37. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Diesel Engine
Torque
Acceleration
Power
38. Allows comparison between different measuring systems and units - Necessary to market internationally
Mechanics
First Stroke (2 Stroke Engine)
Volume
Conversions
39. The magnitude of something in a particular direction
Fourth Stroke (Diesel Engine)
Second Stroke (rotary)
Newton's Second Law
Length
40. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
more than one force
Rotation
Static
Vectors
41. Mass x acceleration
Force Equation
Moment Arm
Torque
Drum Brakes
42. A combination of components
Hydraulics
Fluids
System
Applied Brakes
43. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Area
Third Stroke (Diesel Engine)
First Stroke (4 Stroke Engine)
System
44. 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
First Stroke (4 Stroke Engine)
Power Equation
Applied Brakes
45. Air is drawn in
Hybrid
Effort
Result of Applying a force to a rigid body at rest
First Stroke (Diesel Engine)
46. A device that uses energy to do work to accomplish some desired activity - They do not produce energy - but they do transmit and transform energy - Machines can transmit a force - control its motion - and change its direction - a system of components
Machine
Conversions
Closed System
First Stroke (rotary)
47. Body in motion (car)
Area Equation
Dynamics
Forces
Law of Conservation of Mass
48. Liquid or gas
Moment Arm Equation
Machine
Fluid
System
49. Mass can neither by created nor destroyed - only transformed
Rotation
Hydrostatics
Torque
Law of Conservation of Mass
50. A^2+b^2=c^2
Mass
Forces
Pythagorean Theorem Equation
Internal Combustion Engine Types
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