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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. 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
Power Equation
Force lets us do work on a system
Steam Engine
Hydraulics
2. Translation (slide) -Rotate -Slide and Rotate Together
Hydraulic Cylinders
Result of Applying a force to a rigid body at rest
Steam Engine
Inclined Plane
3. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Mass
Third Stroke (rotary)
Area of a circle equation
Pythagorean Theorem
4. Varies by location (on earth) - distance (from earth) - and mass (of planet)
System
Gravity
Static
Moment Arm
5. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Power Equation
Forces and Vectors
Velocity
Fluid Power
6. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Hybrid Parallel
Law of Conservation of Mass
Internal Combustion Engine Types
First Stroke (Diesel Engine)
7. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Hydraulics
Fourth Stroke (rotary)
Pascal's Principle
Disc Breaks
8. Rotation may occur
Third Stroke (rotary)
Newton's First Law of Motion
If the force is applied away from the center of rotation
Work
9. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Closed System
First Stroke (4 Stroke Engine)
Tension
Mechanical Advantage
10. ICE generates electricity for electric battery -Electric motor turns wheels
Hybrid Series
Second Stroke (2 Stroke Engine)
Statics
Pythagorean Theorem
11. Liquid or gas
Pascal's Principle
Mass
Second Stroke (Diesel Engine)
Fluid
12. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
13. When the moving fluid is a gas
Tension
Aerodynamics
Moment Arm
System
14. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
Rotation
System
Dynamics
4 Stroke Engine
15. Body in motion (car)
Base Dimensions
First Stroke (rotary)
Dynamics
Internal Combustion Engine Types
16. Compression of fuel mix
Mechanical Engineering
First Stroke (2 Stroke Engine)
Second Stroke (rotary)
Work
17. A combination of components
Mass
System
Static
Rotation
18. The force simple machines use to do work on a single load or against a single force
Effort
Mechanical Advantage Equation
Fourth Stroke (Diesel Engine)
Fluid Power
19. What we are studying
Volume
First Stroke (2 Stroke Engine)
System
Conversions
20. Piston travels up and both plugs are closed
Second Stroke (4 Stroke Engine)
Couple
First Stroke (4 Stroke Engine)
Mechanical Advantage
21. Mass x acceleration
Force Equation
Tension
Pressure Equation
Common Brake Characteristics
22. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
2 Stroke Engine
Velocity
Pascal's Principle
Moment Arm
23. For every action there is an equal and opposite reaction -Force -F=mg -Earth exerts a force on all of us
24. External Combustion engine -Only used in factories and plants (not used in cars)
Steam Engine
Equation for Mechanical Advantage regarding inclined planes
more than one force
System International (SI)
25. 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 (
Base Dimensions
System International (SI)
System
Hydrodynamics
26. Mass can neither by created nor destroyed - only transformed
Law of Conservation of Mass
Mechanical Advantage Equation
Fourth Stroke (4 Stroke Engine)
Shear
27. (Force)(Distance)/Seconds
Acceleration
Pascal's Principle
Shear
Power Equation
28. Combustion ignited by spark plug and materials are compressed
Third Stroke (4 Stroke Engine)
Pressure
Moment Arm
Hybrid
29. Work/force or vertical distance/sloping distance
Equation for Mechanical Advantage regarding inclined planes
System
Couple
Pythagorean Theorem Equation
30. A quantity that has both magnitude and direction when placed within a coordinate system -Forces and Velocity i.e. driving 50 miles to the northeast
Common Brake Characteristics
Length
Statics
Vectors
31. Static - Dynamic
Mechanics describe how forces affect a body
Rotary
decrease
System
32. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
Machine
Forces and Vectors
Drum Brakes
Forces
33. Compression-Tension-Shear
More than one force
Mechanical Advantage
Translation
Direction of Forces
34. One that pushes on an object
4 Stroke Engine
Units for Pressure
Compression
If the force is applied away from the center of rotation
35. 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
Vectors
Area
Internal Combustion Engine Types
36. Describes how applied forces bring a body into motion
Base Dimensions
Surroundings
Dynamics
Torque
37. (pi) x (radius)^2
Area of a circle equation
First Stroke (rotary)
Vectors
Moment Arm
38. Can be applied at a time on an object
More than one force
Direction of Forces
Third Stroke (Diesel Engine)
Mass
39. Air is compressed - work is done on the system
Applied Brakes
Machine
Newton's Third Law
Second Stroke (Diesel Engine)
40. 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
Fourth Stroke (Diesel Engine)
Volume
Gravity
41. Combustion of fuel mixture ignited by spark plug
Fluid Power
Couple
Newton's Second Law
Second Stroke (2 Stroke Engine)
42. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human
Velocity
Open System
Applied Brakes
Torque
43. 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.
Vectors
2 Stroke Engine
Work
Torque
44. Length x Width
Area Equation
Newton's First Law of Motion
Velocity
Derived Dimension
45. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Fourth Stroke (Diesel Engine)
Component
Mechanics
Fourth Stroke (4 Stroke Engine)
46. Length x Width x Height
Fluids
Volume
Hydrostatics
Mass
47. When the sum of all forces and the sum of all moments both equal forces - No movement
Pythagorean Theorem
Closed System
Equilibrium
Moment Arm
48. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Internal Combustion Engine Types
First Stroke (rotary)
Hydraulic Cylinders
Law of Conservation of Mass
49. Exhaust
Fourth Stroke (Diesel Engine)
Area
decrease
Work
50. Body at rest or is in equilibrium (wall)
Compression
Fluids
no movement
Static