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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. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Hydrostatics
Forces
First Stroke (Diesel Engine)
System
2. Compression of fuel mix
Gravity
Hybrid
Second Stroke (rotary)
Newton's First Law of Motion
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.
Disc Breaks
2 Stroke Engine
Conversions
Moment Arm Equation
4. ICE generates electricity for electric battery -Electric motor turns wheels
System International (SI)
Hybrid Series
Machine
First Stroke (4 Stroke Engine)
5. Length x Width x Height
Compression
Effort
Closed System
Volume
6. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Internal Combustion Engine Types
First Stroke (4 Stroke Engine)
Newton's Third Law
Dynamics
7. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Power Equation
Static
Area of a circle equation
Fluid Power
8. The branch of science and engineering involving measurement
Metrology
Translation
Steam Engine
Moment Arm
9. Compression-Tension-Shear
Direction of Forces
Force lets us do work on a system
Common Brake Characteristics
Volume
10. When the work done by the effort just equals the work done by the load - ______ of the machine will occur
Mechanics
If the force is applied at the center of the rotation
no movement
Gravity
11. Ignition - power stroke
System
Mechanics describe how forces affect a body
Third Stroke (rotary)
Volume
12. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)
Pressure
Third Stroke (rotary)
Acceleration
Derived Dimension
13. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Fluids
Equilibrium
Third Stroke (4 Stroke Engine)
Statics
14. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Second Stroke (2 Stroke Engine)
Third Stroke (Diesel Engine)
Pythagorean Theorem
2 Stroke Engine
15. 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)
First Stroke (rotary)
Fourth Stroke (4 Stroke Engine)
Drum Brakes
Power
16. Weight/Time
Shear
Power Equation
Statics
Inclined Plane
17. 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
Hybrid
Applied Brakes
4 Stroke Engine
Surroundings
18. Friction changes KE to heat energy- Heat is transferred to air- Front brakes work harder than rear- Some brakes use asbestos- Newer cars have dual braking systems - Don't drive through water or your brakes won't work well (ride breaks to dry them out
Drum Brakes
Gravity
Common Brake Characteristics
System International (SI)
19. Mass x acceleration
Dynamics
Force Equation
Units for Pressure
Dimension
20. Static - Dynamic
Mechanics describe how forces affect a body
Gravity
Mechanical Advantage
Power
21. Psi - newtons - pascals
Units for Pressure
Velocity
more than one force
Hybrid
22. Describes how applied forces bring a body into motion
Fourth Stroke (Diesel Engine)
Dynamics
Area Equation
Common Brake Characteristics
23. Can be applied at a time on an object
2 Stroke Engine
More than one force
Temperature
Steam Engine
24. Translation (slide) -Rotate -Slide and Rotate Together
Result of Applying a force to a rigid body at rest
Steam Engine
will move
First Stroke (rotary)
25. Applied at an angle or parallel to a surface
Shear
System
Hybrid Series
If the force is applied away from the center of rotation
26. 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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27. A^2+b^2=c^2
Pythagorean Theorem Equation
Mechanical Advantage
Torque
Hydrostatics
28. Fuel is injected and combusts due to temperature of compressed air
will move
Hybrid Series
Third Stroke (Diesel Engine)
Pressure Equation
29. Exhaust
Tension
Gravity
Result of Applying a force to a rigid body at rest
Fourth Stroke (Diesel Engine)
30. Length x Width
First Stroke (4 Stroke Engine)
Base Dimensions
Pythagorean Theorem
Area Equation
31. Combustion of fuel mixture ignited by spark plug
Temperature
Direction of Forces
Second Stroke (2 Stroke Engine)
Newton's First Law of Motion
32. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force
Hydrodynamics
Effort
Mechanics describe how forces affect a body
Base Dimensions
33. 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
Machine
If the force is applied at the center of the rotation
Work
Second Stroke (Diesel Engine)
34. Force without machine/Force with machine
System International (SI)
Mechanical Advantage Equation
Second Stroke (2 Stroke Engine)
Aerodynamics
35. Describes how applied forces bring a body into rest or equilibrium
More than one force
Statics
Machine
Internal Combustion Engine Types
36. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Area
2 Stroke Engine
Area Equation
Result of Applying a force to a rigid body at rest
37. Rotation will not occur - but translation might occur
Pressure
Engineers and scientists need a common language
Translation
If the force is applied at the center of the rotation
38. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
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39. (Force)(Distance)/Seconds
Power Equation
Third Stroke (Diesel Engine)
System
decrease
40. Air is compressed - work is done on the system
Volume
Mechanical Advantage Equation
Weight
Second Stroke (Diesel Engine)
41. 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
Inclined Plane
Direction of Forces
Hydraulic Cylinders
42. An indication of kinetic energy of mass at the molecular level
Inclined Plane
Metrology
Temperature
Derived Dimension
43. Movement along a line (reciprocal or linear motion) -Units: feet and meters
More than one force
Translation
If the force is applied away from the center of rotation
US Customary
44. Combustion ignited by spark plug and materials are compressed
Power Equation
Third Stroke (4 Stroke Engine)
Pythagorean Theorem
First Stroke (Diesel Engine)
45. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Result of Applying a force to a rigid body at rest
First Stroke (Diesel Engine)
Gravity
Power Equation
46. 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
Second Stroke (4 Stroke Engine)
Surroundings
System
47. The force simple machines use to do work on a single load or against a single force
Effort
Equilibrium
Aerodynamics
Internal Combustion Engine Types
48. Mass can neither by created nor destroyed - only transformed
Law of Conservation of Mass
Work
Fluids
Engineers and scientists need a common language
49. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Tension
Gravity
Hydrostatics
Third Stroke (4 Stroke Engine)
50. 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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