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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. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Third Stroke (4 Stroke Engine)
Fluids
Couple
Forces and Vectors
2. Intake of fuel and air mixture - compression of mixture by piston
Hydraulic Cylinders
Area Equation
Units
First Stroke (2 Stroke Engine)
3. Allows comparison between different measuring systems and units - Necessary to market internationally
First Stroke (Diesel Engine)
Conversions
First Stroke (4 Stroke Engine)
First Stroke (2 Stroke Engine)
4. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Units
Hybrid
Diesel Engine
Engineers and scientists need a common language
5. 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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6. Liquid or gas
Fluid
Dimension
Dynamics
Fourth Stroke (Diesel Engine)
7. Describes how applied forces bring a body into rest or equilibrium
Derived Dimension
Second Stroke (rotary)
Statics
Mass
8. Exhaust of combustion products
Mechanical Engineering
Rotation
Pythagorean Theorem
Fourth Stroke (rotary)
9. Body in motion (car)
Fourth Stroke (4 Stroke Engine)
Area of a circle equation
Dynamics
Pythagorean Theorem
10. 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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11. 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 (
Shear
decrease
Result of Applying a force to a rigid body at rest
System International (SI)
12. Air is drawn in
Conversions
Common Brake Characteristics
First Stroke (Diesel Engine)
Forces
13. Length / Time
Velocity
Static
System International (SI)
Statics
14. A combination of components
Acceleration
Hydrostatics
Newton's First Law of Motion
System
15. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human
Dimension
Tension
more than one force
Open System
16. If a force causes rotations -Vector- Machines can have more than one torque-Units: foot- pound and newton - meter - i.e. engines - airplanes - propeller
Fluid Power
Hydraulics
Mechanical Advantage Equation
Torque
17. 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
Base Dimensions
Work
Area of a circle equation
Pressure Equation
18. Fuel is injected and combusts due to temperature of compressed air
Fluid Power
Pressure
Third Stroke (Diesel Engine)
Surroundings
19. Often a free body has _______ acting on it
Drum Brakes
Internal Combustion Engine Types
more than one force
Forces and Vectors
20. Length x Width x Height
Dynamics
Volume
Temperature
Aerodynamics
21. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Fourth Stroke (4 Stroke Engine)
will move
Units for Pressure
Power
22. The branch of science and engineering involving measurement
Acceleration
Engineers and scientists need a common language
Common Brake Characteristics
Metrology
23. When the fluid is in motion
If the force is applied at the center of the rotation
Hydrodynamics
Second Stroke (Diesel Engine)
Couple
24. The magnitude of something in a particular direction
Diesel Engine
Length
Mechanical Advantage Equation
no movement
25. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
Dynamics
Inclined Plane
Rotation
Dimension
26. Rotation will not occur - but translation might occur
Mechanics describe how forces affect a body
Static
If the force is applied at the center of the rotation
Power Equation
27. When the moving fluid is a gas
Component
Hydraulic Cylinders
Shear
Aerodynamics
28. Can be applied at a time on an object
Dimension
Mechanical Advantage Equation
Mass
More than one force
29. Combustion ignited by spark plug and materials are compressed
Third Stroke (Diesel Engine)
Derived Dimension
Hydrodynamics
Third Stroke (4 Stroke Engine)
30. Describes how applied forces bring a body into motion
Second Stroke (2 Stroke Engine)
Dynamics
Mechanical Advantage Equation
Disc Breaks
31. Applied at an angle or parallel to a surface
Shear
System
Volume
Drum Brakes
32. Work/force or vertical distance/sloping distance
Newton's Third Law
4 Stroke Engine
Mass
Equation for Mechanical Advantage regarding inclined planes
33. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Closed System
Equilibrium
Fluids
Units
34. A^2+b^2=c^2 - used to calculate vectors
Moment Arm
If the force is applied away from the center of rotation
Pythagorean Theorem
Law of Conservation of Mass
35. Intake of fuel and air mix
Rotation
First Stroke (rotary)
Power Equation
Component
36. Static - Dynamic
Area of a circle equation
Mechanics describe how forces affect a body
Result of Applying a force to a rigid body at rest
Dynamics
37. 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
Closed System
If the force is applied at the center of the rotation
Second Stroke (rotary)
38. Compression-Tension-Shear
Newton's Third Law
Mechanics
Mechanical Advantage Equation
Direction of Forces
39. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force
Derived Dimension
Newton's Second Law
Pythagorean Theorem Equation
Base Dimensions
40. A flat - sloping surface -The only simple machine that does not move -The force is applied to the ramp - since this is the direction the load weight is moved -Sloping side is longer than vertical side -Less force is required to accomplish the same am
Area
Rotary
Gravity
Inclined Plane
41. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Temperature
If the force is applied away from the center of rotation
Equation for Mechanical Advantage regarding inclined planes
Moment Arm
42. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
more than one force
Drum Brakes
First Stroke (2 Stroke Engine)
Law of Conservation of Mass
43. (pi) x (radius)^2
Pressure
Work
Area of a circle equation
Mechanics describe how forces affect a body
44. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Effort
Aerodynamics
Mass
Pythagorean Theorem
45. Psi - newtons - pascals
Volume
Units for Pressure
Static
will move
46. What we are not studying
Torque
Surroundings
Metrology
Third Stroke (rotary)
47. An indication of kinetic energy of mass at the molecular level
Newton's Second Law
Fluid Power
Temperature
no movement
48. 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
Power Equation
System International (SI)
Mass
Moment Arm Equation
49. 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
Second Stroke (Diesel Engine)
Hybrid
Work
Fluids
50. 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
Hydraulics
Law of Conservation of Mass
Drum Brakes
Units