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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. If a force causes rotations -Vector- Machines can have more than one torque-Units: foot- pound and newton - meter - i.e. engines - airplanes - propeller
Torque
Newton's Second Law
If the force is applied away from the center of rotation
Fluids
2. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Fluids
Diesel Engine
Dynamics
Pythagorean Theorem
3. Exhaust of combustion products
Gravity
Fourth Stroke (rotary)
Dimension
Pythagorean Theorem
4. (pi) x (radius)^2
Hydraulics
Work
Hybrid Series
Area of a circle equation
5. 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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6. Air is compressed - work is done on the system
will move
Second Stroke (Diesel Engine)
Dimension
Fourth Stroke (4 Stroke Engine)
7. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force
Shear
Conversions
Base Dimensions
Mass
8. When the work done by the effort exceeds the work done by the load - the load...
System International (SI)
2 Stroke Engine
First Stroke (rotary)
will move
9. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Mass
Pythagorean Theorem
Forces
Translation
10. External Combustion engine -Only used in factories and plants (not used in cars)
Length
Moment Arm Equation
Hydraulics
Steam Engine
11. 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
Static
Closed System
Applied Brakes
Second Stroke (4 Stroke Engine)
12. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Mechanical Advantage Equation
Effort
Pythagorean Theorem
Power Equation
13. Body at rest or is in equilibrium (wall)
Static
Engineers and scientists need a common language
First Stroke (4 Stroke Engine)
Newton's Second Law
14. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Mechanical Engineering
4 Stroke Engine
Component
Work
15. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Open System
Pressure
Component
Hybrid Parallel
16. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Gravity
Static
Equilibrium
Newton's First Law of Motion
17. Describes how applied forces bring a body into motion
Base Dimensions
Area Equation
Hybrid Parallel
Dynamics
18. Rotation will not occur - but translation might occur
Statics
Mechanical Advantage
Hydrodynamics
If the force is applied at the center of the rotation
19. Length x Width x Height
Mechanics
Newton's Second Law
Hydrostatics
Volume
20. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Hybrid Parallel
Gravity
Units
First Stroke (2 Stroke Engine)
21. The branch of science and engineering involving measurement
Metrology
Effort
Area of a circle equation
Hydraulic Cylinders
22. 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
Hybrid Parallel
Mass
Closed System
Base Dimensions
23. A^2+b^2=c^2
Moment Arm Equation
Third Stroke (Diesel Engine)
Hybrid
Pythagorean Theorem Equation
24. Combustion ignited by spark plug and materials are compressed
Area
Third Stroke (4 Stroke Engine)
Force lets us do work on a system
no movement
25. Psi - newtons - pascals
Tension
Units for Pressure
Area of a circle equation
Hybrid
26. An indication of kinetic energy of mass at the molecular level
Temperature
Pressure Equation
Machine
Component
27. Dimensions and units
Second Stroke (4 Stroke Engine)
Engineers and scientists need a common language
Newton's First Law of Motion
Hydraulics
28. When the fluid is in motion
Shear
If the force is applied at the center of the rotation
Hydrodynamics
4 Stroke Engine
29. 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
Hybrid
Pythagorean Theorem
Pythagorean Theorem
Common Brake Characteristics
30. Ignition - power stroke
Tension
US Customary
Third Stroke (rotary)
Gravity
31. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Diesel Engine
Area
Force Equation
Pythagorean Theorem 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
Result of Applying a force to a rigid body at rest
4 Stroke Engine
Inclined Plane
Rotation
33. 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
Vectors
decrease
Hybrid Parallel
Machine
34. Length x Width
Area Equation
Units for Pressure
Steam Engine
Second Stroke (Diesel Engine)
35. Mass x acceleration
Couple
Hydrostatics
Fourth Stroke (4 Stroke Engine)
Force Equation
36. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Volume
Velocity
Forces
Diesel Engine
37. 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 (
Mechanics describe how forces affect a body
Gravity
System International (SI)
Forces
38. Force x Distance
Moment Arm Equation
Area of a circle equation
Third Stroke (4 Stroke Engine)
Pascal's Principle
39. Body in motion (car)
Torque
Fluids
Dynamics
Third Stroke (rotary)
40. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
Drum Brakes
Fourth Stroke (Diesel Engine)
Third Stroke (rotary)
Result of Applying a force to a rigid body at rest
41. Fuel is injected and combusts due to temperature of compressed air
Third Stroke (Diesel Engine)
Hydrostatics
Tension
Mechanical Advantage Equation
42. Weight/Time
Machine
Second Stroke (Diesel Engine)
Equilibrium
Power Equation
43. Static - Dynamic
Mechanics describe how forces affect a body
no movement
4 Stroke Engine
First Stroke (4 Stroke Engine)
44. 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
Fluid Power
Hybrid
Power
Gravity
45. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Temperature
Couple
Disc Breaks
Second Stroke (2 Stroke Engine)
46. Force without machine/Force with machine
System
Work
Mechanical Advantage Equation
Vectors
47. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Fluids
Newton's Third Law
Couple
Internal Combustion Engine Types
48. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Pressure
decrease
Statics
Dynamics
49. Compression of fuel mix
Area of a circle equation
Second Stroke (rotary)
First Stroke (4 Stroke Engine)
Power Equation
50. Length / Time
Vectors
Velocity
Newton's Second Law
First Stroke (Diesel Engine)