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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. Compression-Tension-Shear
Steam Engine
Direction of Forces
Power
Temperature
2. When the moving fluid is a gas
Rotation
Moment Arm
Aerodynamics
Area of a circle equation
3. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Third Stroke (rotary)
Couple
System International (SI)
Equilibrium
4. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)
Third Stroke (rotary)
Derived Dimension
Drum Brakes
Hydrostatics
5. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Pythagorean Theorem
4 Stroke Engine
Equilibrium
Second Stroke (Diesel Engine)
6. Force x Distance
Acceleration
Moment Arm Equation
Mechanical Advantage Equation
First Stroke (rotary)
7. A pull on an object
will move
Newton's Third Law
Internal Combustion Engine Types
Tension
8. Work/force or vertical distance/sloping distance
Fluid
Second Stroke (2 Stroke Engine)
Equation for Mechanical Advantage regarding inclined planes
Hydraulics
9. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
4 Stroke Engine
Internal Combustion Engine Types
Machine
Mechanical Engineering
10. Length x Width x Height
Result of Applying a force to a rigid body at rest
Volume
Open System
Pythagorean Theorem
11. Body at rest or is in equilibrium (wall)
decrease
Dynamics
Forces
Static
12. Three- dimensional property measured in units of length times length times length =length x width x height
Volume
Units
Internal Combustion Engine Types
Surroundings
13. Length / Time
Velocity
2 Stroke Engine
Area of a circle equation
Pascal's Principle
14. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Equilibrium
Diesel Engine
Law of Conservation of Mass
Steam Engine
15. A^2+b^2=c^2 - used to calculate vectors
Pythagorean Theorem
Tension
Fourth Stroke (4 Stroke Engine)
Equation for Mechanical Advantage regarding inclined planes
16. Mass x acceleration
Fluid
Applied Brakes
Force Equation
decrease
17. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
no movement
US Customary
decrease
Dynamics
18. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Units
Units for Pressure
Pythagorean Theorem
Tension
19. Allows comparison between different measuring systems and units - Necessary to market internationally
Third Stroke (4 Stroke Engine)
Statics
Machine
Conversions
20. When the work done by the effort exceeds the work done by the load - the load...
Common Brake Characteristics
will move
If the force is applied at the center of the rotation
Moment Arm
21. 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
Work
US Customary
Pascal's Principle
If the force is applied away from the center of rotation
22. ...
Force lets us do work on a system
Acceleration
Rotation
Third Stroke (rotary)
23. A combination of components
System
Power Equation
Gravity
Volume
24. Psi - newtons - pascals
Pythagorean Theorem
Power Equation
Units for Pressure
Equilibrium
25. Static - Dynamic
Mechanics describe how forces affect a body
Aerodynamics
Force lets us do work on a system
Direction of Forces
26. 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
Hydrostatics
If the force is applied away from the center of rotation
Common Brake Characteristics
Volume
27. 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
28. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
29. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Newton's First Law of Motion
Internal Combustion Engine Types
Forces and Vectors
Area
30. 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
System
If the force is applied away from the center of rotation
Mass
Hydrodynamics
31. (Force)(Distance)/Seconds
Power Equation
Static
Third Stroke (rotary)
Mechanics describe how forces affect a body
32. 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
Mechanical Engineering
Mass
Component
33. Same pressure - work - volume - Different forces and distances
Closed System
Mechanics describe how forces affect a body
Area
Hydraulic Cylinders
34. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Mechanics
Disc Breaks
Hydrodynamics
Surroundings
35. Exhaust of combustion products
Fourth Stroke (rotary)
Pythagorean Theorem
Length
First Stroke (2 Stroke Engine)
36. Weight/Time
Second Stroke (rotary)
Power Equation
System
Dynamics
37. Mechanics is an application of math that describes how forces affect a body
Work
Mechanics
System
Pythagorean Theorem
38. Ignition - power stroke
Translation
Volume
Forces
Third Stroke (rotary)
39. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Aerodynamics
If the force is applied at the center of the rotation
First Stroke (4 Stroke Engine)
Machine
40. The force simple machines use to do work on a single load or against a single force
Effort
System International (SI)
Second Stroke (2 Stroke Engine)
System
41. Mass can neither by created nor destroyed - only transformed
Vectors
Law of Conservation of Mass
Diesel Engine
Gravity
42. What we are not studying
Surroundings
Hybrid
Power
Units
43. 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
Units for Pressure
Compression
Steam Engine
44. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Hydrodynamics
Gravity
Fluid
Vectors
45. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Pythagorean Theorem
Fluid Power
System
First Stroke (4 Stroke Engine)
46. Piston travels up and both plugs are closed
Forces and Vectors
Second Stroke (4 Stroke Engine)
Metrology
Dynamics
47. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
More than one force
Component
Pythagorean Theorem Equation
Power
48. 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
4 Stroke Engine
Engineers and scientists need a common language
Third Stroke (4 Stroke Engine)
More than one force
49. Rotation may occur
Pythagorean Theorem Equation
If the force is applied away from the center of rotation
Aerodynamics
Hydrodynamics
50. Compression of fuel mix
Closed System
Units for Pressure
Second Stroke (rotary)
Disc Breaks