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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. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
If the force is applied away from the center of rotation
Drum Brakes
Fourth Stroke (4 Stroke Engine)
Hydraulic Cylinders
2. Exhaust
Second Stroke (4 Stroke Engine)
Steam Engine
Hydraulics
Fourth Stroke (Diesel Engine)
3. 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
Area
Common Brake Characteristics
Fourth Stroke (4 Stroke Engine)
Vectors
4. 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.
2 Stroke Engine
Mechanical Engineering
Acceleration
Pythagorean Theorem
5. Force/Area
Pressure Equation
Dynamics
Open System
Gravity
6. Describes how applied forces bring a body into motion
no movement
Dynamics
Hybrid Parallel
Velocity
7. Describes how applied forces bring a body into rest or equilibrium
Power Equation
Area Equation
Surroundings
Statics
8. Mechanics is an application of math that describes how forces affect a body
Volume
Mechanics
Steam Engine
Open System
9. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Area
Second Stroke (2 Stroke Engine)
Power Equation
Mechanical Advantage
10. Can be applied at a time on an object
Mechanical Engineering
Fourth Stroke (rotary)
More than one force
Dimension
11. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Aerodynamics
Area
Gravity
Fluid Power
12. A^2+b^2=c^2
Base Dimensions
Pythagorean Theorem
Forces
Pythagorean Theorem Equation
13. Weight/Time
Second Stroke (Diesel Engine)
Power Equation
First Stroke (Diesel Engine)
Rotation
14. What we are not studying
Surroundings
Forces and Vectors
Shear
will move
15. Compression of fuel mix
Rotary
Area of a circle equation
Second Stroke (rotary)
Volume
16. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Dynamics
Acceleration
Hydraulic Cylinders
Diesel Engine
17. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Result of Applying a force to a rigid body at rest
Internal Combustion Engine Types
Area Equation
Base Dimensions
18. Length / Time
Translation
Velocity
Result of Applying a force to a rigid body at rest
Pressure
19. Length x Width
Translation
Area Equation
If the force is applied away from the center of rotation
Fluids
20. ...
Second Stroke (rotary)
Force lets us do work on a system
will move
Hybrid Series
21. Intake of fuel and air mix
Fluids
First Stroke (rotary)
Weight
Second Stroke (4 Stroke Engine)
22. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
US Customary
Units for Pressure
Compression
Component
23. 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
Shear
Length
Forces and Vectors
Applied Brakes
24. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Pythagorean Theorem
Forces and Vectors
Area Equation
Aerodynamics
25. A combination of components
Third Stroke (Diesel Engine)
Tension
System
Disc Breaks
26. 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
Force lets us do work on a system
Mass
Law of Conservation of Mass
Power Equation
27. 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
Mechanical Advantage
Volume
Translation
28. Length x Width x Height
Pressure Equation
Work
Volume
Common Brake Characteristics
29. 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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30. Combustion ignited by spark plug and materials are compressed
Closed System
First Stroke (4 Stroke Engine)
Third Stroke (rotary)
Third Stroke (4 Stroke Engine)
31. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Base Dimensions
Gravity
Power
Translation
32. The magnitude of something in a particular direction
Forces
Length
Temperature
Volume
33. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
Compression
Rotation
Torque
Third Stroke (4 Stroke Engine)
34. 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
Equilibrium
Fluids
Fourth Stroke (rotary)
35. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Second Stroke (Diesel Engine)
Static
Forces
Fluids
36. Static - Dynamic
Tension
Mechanics describe how forces affect a body
Inclined Plane
Pythagorean Theorem Equation
37. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Aerodynamics
Second Stroke (rotary)
Pythagorean Theorem
Hydrostatics
38. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Fourth Stroke (Diesel Engine)
Compression
Torque
Units
39. Three- dimensional property measured in units of length times length times length =length x width x height
Volume
Rotation
Fourth Stroke (Diesel Engine)
First Stroke (4 Stroke Engine)
40. Allows comparison between different measuring systems and units - Necessary to market internationally
Dynamics
Conversions
2 Stroke Engine
Vectors
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
Result of Applying a force to a rigid body at rest
Second Stroke (rotary)
Hydraulics
42. Rotation may occur
Couple
Moment Arm
If the force is applied away from the center of rotation
Translation
43. Applied at an angle or parallel to a surface
Shear
Pascal's Principle
Force Equation
Acceleration
44. Often a free body has _______ acting on it
more than one force
Gravity
Diesel Engine
Hybrid Parallel
45. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
System International (SI)
Mechanical Advantage Equation
Equation for Mechanical Advantage regarding inclined planes
decrease
46. An indication of kinetic energy of mass at the molecular level
Force lets us do work on a system
Temperature
Third Stroke (Diesel Engine)
First Stroke (Diesel Engine)
47. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Closed System
First Stroke (2 Stroke Engine)
Equation for Mechanical Advantage regarding inclined planes
Rotation
48. When fluid is at rest
Hydrostatics
Second Stroke (Diesel Engine)
Derived Dimension
Mechanical Advantage Equation
49. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Translation
Couple
Fluid Power
Mechanics describe how forces affect a body
50. 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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