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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. Describes a physical property of anything - What we are measuring
Derived Dimension
Power Equation
Newton's First Law of Motion
Dimension
2. The magnitude of something in a particular direction
Units
Work
Disc Breaks
Length
3. 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
Base Dimensions
Applied Brakes
Mechanics describe how forces affect a body
Mass
4. 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
Power Equation
Acceleration
US Customary
Common Brake Characteristics
5. What we are studying
Area of a circle equation
System
Dynamics
Torque
6. Air is compressed - work is done on the system
Gravity
Second Stroke (Diesel Engine)
Moment Arm
US Customary
7. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
Newton's First Law of Motion
Conversions
Drum Brakes
Effort
8. Mass x acceleration
Force lets us do work on a system
Area Equation
Pythagorean Theorem Equation
Force Equation
9. An indication of kinetic energy of mass at the molecular level
Dynamics
Internal Combustion Engine Types
Temperature
Area Equation
10. Liquid or gas
Fluid
Weight
Statics
Volume
11. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Result of Applying a force to a rigid body at rest
Hybrid
Gravity
First Stroke (4 Stroke Engine)
12. One that pushes on an object
more than one force
Units
Compression
Third Stroke (rotary)
13. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Inclined Plane
will move
Forces
Pythagorean Theorem
14. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Closed System
Forces
Common Brake Characteristics
Third Stroke (Diesel Engine)
15. Rotation will not occur - but translation might occur
First Stroke (rotary)
If the force is applied at the center of the rotation
Compression
Hybrid
16. Force x Distance
Disc Breaks
Vectors
Gravity
Moment Arm Equation
17. Translation (slide) -Rotate -Slide and Rotate Together
Result of Applying a force to a rigid body at rest
Second Stroke (4 Stroke Engine)
Work
Tension
18. Describes how applied forces bring a body into rest or equilibrium
Units
Power Equation
Statics
Third Stroke (rotary)
19. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Newton's Second Law
Dynamics
Forces and Vectors
Acceleration
20. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
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21. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Hybrid
Moment Arm Equation
Fluids
Applied Brakes
22. Exhaust
Metrology
Fourth Stroke (Diesel Engine)
Open System
Rotation
23. Ignition - power stroke
Dimension
Drum Brakes
Machine
Third Stroke (rotary)
24. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
First Stroke (4 Stroke Engine)
Vectors
Machine
Diesel Engine
25. Dimensions and units
Third Stroke (Diesel Engine)
Temperature
Engineers and scientists need a common language
Newton's Second Law
26. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Fluid Power
Velocity
Hybrid Parallel
Pascal's Principle
27. Three- dimensional property measured in units of length times length times length =length x width x height
Volume
Moment Arm Equation
Torque
Drum Brakes
28. A^2+b^2=c^2
Pythagorean Theorem Equation
Result of Applying a force to a rigid body at rest
Fourth Stroke (rotary)
Hydraulics
29. Applied at an angle or parallel to a surface
Mechanics describe how forces affect a body
Shear
Forces and Vectors
System
30. When the work done by the effort just equals the work done by the load - ______ of the machine will occur
Power Equation
no movement
Static
Hybrid Series
31. 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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32. The branch of science and engineering involving measurement
Hydraulics
Metrology
Open System
Velocity
33. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Volume
Length
Conversions
Units
34. Force without machine/Force with machine
Volume
4 Stroke Engine
Mechanical Advantage Equation
Pythagorean Theorem Equation
35. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Gravity
Equilibrium
Area
Internal Combustion Engine Types
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. A pull on an object
Tension
First Stroke (4 Stroke Engine)
Gravity
Fourth Stroke (4 Stroke Engine)
38. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Mechanics describe how forces affect a body
Surroundings
Component
Hydrostatics
39. 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
Moment Arm Equation
Vectors
Hybrid Series
Rotary
40. 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
Applied Brakes
Volume
Steam Engine
Static
41. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Torque
Volume
Disc Breaks
Hybrid Parallel
42. Rotation may occur
If the force is applied away from the center of rotation
Pressure
Translation
Hybrid Parallel
43. 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
First Stroke (4 Stroke Engine)
Tension
Applied Brakes
44. Length x Width x Height
Base Dimensions
System International (SI)
Second Stroke (2 Stroke Engine)
Volume
45. 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
Fluid Power
System
decrease
Mechanical Advantage
46. Static - Dynamic
Second Stroke (Diesel Engine)
Mechanics describe how forces affect a body
Volume
Newton's Third Law
47. 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
Area Equation
Pythagorean Theorem Equation
System International (SI)
48. Describes how applied forces bring a body into motion
More than one force
Conversions
Dynamics
Machine
49. Often a free body has _______ acting on it
Second Stroke (rotary)
more than one force
Pythagorean Theorem Equation
System
50. 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
Mechanical Engineering
Fourth Stroke (Diesel Engine)
Length
Dynamics