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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. Static - Dynamic
Mechanics describe how forces affect a body
Third Stroke (rotary)
If the force is applied at the center of the rotation
Static
2. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Newton's Third Law
Units for Pressure
Closed System
Units
3. What we are not studying
Mechanical Advantage Equation
Surroundings
Dynamics
Fourth Stroke (Diesel Engine)
4. The force simple machines use to do work on a single load or against a single force
Inclined Plane
Hydrostatics
Effort
Couple
5. Can be reduced by decreasing the weight or force or increasing the area i.e. airbag
Fluid
Temperature
Hybrid Parallel
Pressure
6. 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
First Stroke (Diesel Engine)
Mechanical Engineering
Pressure Equation
If the force is applied away from the center of rotation
7. A pull on an object
2 Stroke Engine
Tension
Applied Brakes
Area Equation
8. Force x Distance
Dynamics
Moment Arm Equation
more than one force
Shear
9. Mechanics is an application of math that describes how forces affect a body
Dynamics
Rotation
Mechanics
Aerodynamics
10. The magnitude of something in a particular direction
Length
Newton's First Law of Motion
Aerodynamics
Pythagorean Theorem
11. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
2 Stroke Engine
Mechanical Advantage
Equilibrium
First Stroke (4 Stroke Engine)
12. Fuel is injected and combusts due to temperature of compressed air
Second Stroke (Diesel Engine)
Third Stroke (Diesel Engine)
Law of Conservation of Mass
Rotation
13. Body at rest or is in equilibrium (wall)
Base Dimensions
Static
Hydrostatics
Forces
14. Same pressure - work - volume - Different forces and distances
System
Hydraulic Cylinders
First Stroke (4 Stroke Engine)
Diesel Engine
15. When the work done by the effort exceeds the work done by the load - the load...
Newton's Third Law
will move
Third Stroke (Diesel Engine)
Direction of Forces
16. 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)
Power
Effort
Conversions
Component
17. External Combustion engine -Only used in factories and plants (not used in cars)
Component
Steam Engine
First Stroke (4 Stroke Engine)
Area Equation
18. When the moving fluid is a gas
Engineers and scientists need a common language
Aerodynamics
Metrology
Translation
19. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Moment Arm
Hybrid
Metrology
Internal Combustion Engine Types
20. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Second Stroke (4 Stroke Engine)
Fluids
Pythagorean Theorem
decrease
21. 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
Mechanical Engineering
Disc Breaks
Mass
Statics
22. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Acceleration
Second Stroke (rotary)
Hybrid Parallel
Second Stroke (2 Stroke Engine)
23. Allows comparison between different measuring systems and units - Necessary to market internationally
Fluids
First Stroke (Diesel Engine)
Forces and Vectors
Conversions
24. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Shear
Fluid Power
4 Stroke Engine
Volume
25. The branch of science and engineering involving measurement
Surroundings
Power
Torque
Metrology
26. Rotation may occur
If the force is applied away from the center of rotation
System
Disc Breaks
Mechanics
27. ICE generates electricity for electric battery -Electric motor turns wheels
Hybrid Parallel
Hybrid Series
Result of Applying a force to a rigid body at rest
Torque
28. Compression-Tension-Shear
First Stroke (rotary)
System
Direction of Forces
Newton's Third Law
29. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Machine
Force lets us do work on a system
Fluid Power
Pythagorean Theorem
30. 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
Work
Third Stroke (4 Stroke Engine)
more than one force
Rotary
31. Mass x acceleration
Pythagorean Theorem
Force Equation
Temperature
Machine
32. If a force causes rotations -Vector- Machines can have more than one torque-Units: foot- pound and newton - meter - i.e. engines - airplanes - propeller
First Stroke (2 Stroke Engine)
Torque
Pressure Equation
4 Stroke Engine
33. When the work done by the effort just equals the work done by the load - ______ of the machine will occur
no movement
Pythagorean Theorem
Shear
Third Stroke (rotary)
34. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Acceleration
Translation
Work
Law of Conservation of Mass
35. Intake of fuel and air mixture - compression of mixture by piston
Mechanics describe how forces affect a body
Translation
Force lets us do work on a system
First Stroke (2 Stroke Engine)
36. Exhaust
Moment Arm Equation
Fourth Stroke (Diesel Engine)
Volume
Newton's Second Law
37. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Gravity
Weight
Power
Translation
38. Air is compressed - work is done on the system
2 Stroke Engine
Static
Second Stroke (Diesel Engine)
Fluids
39. 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
Mechanical Engineering
Length
no movement
Hybrid
40. Length x Width x Height
Forces
Machine
Dynamics
Volume
41. (Force)(Distance)/Seconds
Power Equation
Conversions
Volume
Pressure
42. What we are studying
Hybrid Series
System
Second Stroke (2 Stroke Engine)
Dimension
43. Intake of fuel and air mix
First Stroke (rotary)
Mechanics describe how forces affect a body
Fluids
Newton's Third Law
44. Ignition - power stroke
Mechanical Advantage
Third Stroke (rotary)
Static
Vectors
45. Psi - newtons - pascals
Equilibrium
Forces and Vectors
Second Stroke (rotary)
Units for Pressure
46. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
47. Body in motion (car)
Dynamics
First Stroke (rotary)
Shear
Units
48. Length x Width
Volume
Third Stroke (Diesel Engine)
Area Equation
Drum Brakes
49. A^2+b^2=c^2
Temperature
Pythagorean Theorem Equation
Diesel Engine
Power
50. Force without machine/Force with machine
More than one force
Result of Applying a force to a rigid body at rest
Force lets us do work on a system
Mechanical Advantage Equation