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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. Body in motion (car)
Steam Engine
Second Stroke (2 Stroke Engine)
Rotation
Dynamics
2. Result of a force moving an object against a resistance through some distance in a desired direction -Work transfers energy -Work is a measure of what is done and not the effort applied - Done by lifting - pushing - rotating - or sliding -W=Fd -F=Amo
Disc Breaks
Work
First Stroke (2 Stroke Engine)
Fluid
3. 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.
Compression
Hybrid Series
2 Stroke Engine
Third Stroke (Diesel Engine)
4. 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
Equation for Mechanical Advantage regarding inclined planes
Moment Arm
Volume
Mechanical Engineering
5. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Units for Pressure
Acceleration
Moment Arm
Third Stroke (4 Stroke Engine)
6. Combustion ignited by spark plug and materials are compressed
Vectors
Third Stroke (4 Stroke Engine)
Newton's First Law of Motion
First Stroke (4 Stroke Engine)
7. The branch of science and engineering involving measurement
Metrology
Acceleration
Newton's Second Law
Law of Conservation of Mass
8. What we are studying
Hybrid Series
System
Weight
Internal Combustion Engine Types
9. A combination of components
Area of a circle equation
Dynamics
System
Units for Pressure
10. 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 (
Area Equation
more than one force
System International (SI)
Derived Dimension
11. Can be reduced by decreasing the weight or force or increasing the area i.e. airbag
Pressure
Second Stroke (rotary)
Power
Second Stroke (2 Stroke Engine)
12. 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
System International (SI)
Result of Applying a force to a rigid body at rest
Conversions
13. Ignition - power stroke
2 Stroke Engine
Power Equation
Machine
Third Stroke (rotary)
14. Fuel is injected and combusts due to temperature of compressed air
Compression
Torque
Third Stroke (Diesel Engine)
Closed System
15. Applied at an angle or parallel to a surface
Acceleration
Pressure Equation
Shear
will move
16. Mechanics is an application of math that describes how forces affect a body
Open System
Pythagorean Theorem
Mechanics
Force lets us do work on a system
17. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Rotary
Component
Force Equation
Mechanical Engineering
18. Describes how applied forces bring a body into motion
Hybrid Parallel
Common Brake Characteristics
Dynamics
Hybrid Series
19. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Couple
Power
Pressure
Metrology
20. 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
System
Vectors
Shear
Length
21. What we are not studying
Power Equation
Effort
Moment Arm Equation
Surroundings
22. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Weight
Machine
Forces
4 Stroke Engine
23. Static - Dynamic
Units
Base Dimensions
Statics
Mechanics describe how forces affect a body
24. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Forces and Vectors
Component
Weight
Diesel Engine
25. (pi) x (radius)^2
Compression
System International (SI)
Area of a circle equation
Drum Brakes
26. The force simple machines use to do work on a single load or against a single force
Effort
Newton's Third Law
Power Equation
If the force is applied away from the center of rotation
27. Intake of fuel and air mixture - compression of mixture by piston
Tension
Mass
Area
First Stroke (2 Stroke Engine)
28. Compression of fuel mix
Second Stroke (rotary)
Base Dimensions
Newton's Second Law
Mechanics
29. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Third Stroke (Diesel Engine)
Velocity
Moment Arm Equation
decrease
30. Allows comparison between different measuring systems and units - Necessary to market internationally
Effort
Equilibrium
Conversions
Rotation
31. Length / Time
Velocity
Units for Pressure
Gravity
Moment Arm Equation
32. Used in cars -2 rotations of crankshaft -4 strokes (down - up - down - up) of piston - i.e. cars - trucks - planes - buses - motorcycles - submarine -1% of gas actually moves people
4 Stroke Engine
Internal Combustion Engine Types
Force lets us do work on a system
Component
33. Dimensions and units
Engineers and scientists need a common language
Forces and Vectors
Law of Conservation of Mass
Work
34. Compression-Tension-Shear
Internal Combustion Engine Types
Pythagorean Theorem Equation
Volume
Direction of Forces
35. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Tension
Steam Engine
Internal Combustion Engine Types
First Stroke (4 Stroke Engine)
36. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Drum Brakes
Work
Fluids
Fourth Stroke (4 Stroke Engine)
37. When the work done by the effort exceeds the work done by the load - the load...
Machine
will move
Internal Combustion Engine Types
First Stroke (2 Stroke Engine)
38. One that pushes on an object
Second Stroke (Diesel Engine)
Compression
Inclined Plane
Newton's Second Law
39. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Hydrodynamics
Compression
Metrology
Area
40. 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
Moment Arm Equation
Newton's Third Law
Hydraulics
Rotary
41. When the fluid is in motion
Applied Brakes
Metrology
decrease
Hydrodynamics
42. Intake of fuel and air mix
Couple
Gravity
Volume
First Stroke (rotary)
43. A^2+b^2=c^2 - used to calculate vectors
Equilibrium
Area
Pythagorean Theorem
Mechanical Advantage
44. When fluid is at rest
First Stroke (rotary)
Moment Arm
First Stroke (2 Stroke Engine)
Hydrostatics
45. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Fluid Power
Compression
Rotary
Inclined Plane
46. Exhaust
Temperature
Effort
Pressure
Fourth Stroke (Diesel Engine)
47. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human
Open System
Derived Dimension
Mass
Hybrid Parallel
48. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
Hybrid Parallel
Mechanics describe how forces affect a body
Pressure
Drum Brakes
49. External Combustion engine -Only used in factories and plants (not used in cars)
Dimension
Aerodynamics
Steam Engine
Closed System
50. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Fluid Power
Disc Breaks
US Customary
Dynamics