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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. 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
Area Equation
Applied Brakes
First Stroke (2 Stroke Engine)
Hybrid Series
2. 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 (
Pythagorean Theorem Equation
Length
2 Stroke Engine
System International (SI)
3. When the work done by the effort just equals the work done by the load - ______ of the machine will occur
Fourth Stroke (4 Stroke Engine)
Pythagorean Theorem Equation
Torque
no movement
4. Liquid or gas
Fluid
System
no movement
US Customary
5. The force simple machines use to do work on a single load or against a single force
Effort
Couple
Compression
Conversions
6. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Hydraulic Cylinders
Moment Arm
First Stroke (Diesel Engine)
Area
7. Piston travels up and both plugs are closed
First Stroke (rotary)
Compression
Second Stroke (4 Stroke Engine)
Surroundings
8. Rotation will not occur - but translation might occur
Vectors
Dynamics
Effort
If the force is applied at the center of the rotation
9. Can be reduced by decreasing the weight or force or increasing the area i.e. airbag
Pressure
Mechanical Engineering
no movement
Law of Conservation of Mass
10. When the sum of all forces and the sum of all moments both equal forces - No movement
Length
Equilibrium
System International (SI)
Fluids
11. 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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12. Body at rest or is in equilibrium (wall)
Static
Fluids
Rotary
Gravity
13. Mechanics is an application of math that describes how forces affect a body
Units for Pressure
Mechanics
Hybrid
Second Stroke (Diesel Engine)
14. Same pressure - work - volume - Different forces and distances
Rotary
US Customary
Mechanical Engineering
Hydraulic Cylinders
15. An indication of kinetic energy of mass at the molecular level
Moment Arm
Temperature
Open System
Dimension
16. Combustion of fuel mixture ignited by spark plug
Fluid Power
Second Stroke (2 Stroke Engine)
Velocity
First Stroke (Diesel Engine)
17. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Disc Breaks
Force lets us do work on a system
Compression
Power Equation
18. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Length
Mechanical Engineering
Couple
Rotary
19. Force without machine/Force with machine
Pythagorean Theorem
Fluid Power
Mechanical Advantage Equation
Newton's First Law of Motion
20. 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
Fourth Stroke (rotary)
Mechanical Engineering
Metrology
Area
21. Can be applied at a time on an object
Hybrid
Newton's First Law of Motion
Law of Conservation of Mass
More than one force
22. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Power
Pascal's Principle
Gravity
Units
23. A pull on an object
Units for Pressure
Tension
Shear
Newton's First Law of Motion
24. 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
Couple
Third Stroke (rotary)
Mass
First Stroke (2 Stroke Engine)
25. Dimensions and units
Hydraulic Cylinders
More than one force
Power Equation
Engineers and scientists need a common language
26. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Force Equation
System
decrease
Length
27. If a force causes rotations -Vector- Machines can have more than one torque-Units: foot- pound and newton - meter - i.e. engines - airplanes - propeller
US Customary
Units
Torque
Area
28. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
Drum Brakes
If the force is applied away from the center of rotation
Pressure Equation
Vectors
29. If the force needed to operate the machine (input force) is less than the force being opposed or the load being moved (output force) -The ratio of the output force divided by the input force -If the number is greater than one - there is a mechanical
Engineers and scientists need a common language
System International (SI)
Mechanical Advantage
Conversions
30. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Pythagorean Theorem
Mechanics describe how forces affect a body
Work
More than one force
31. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)
decrease
Derived Dimension
Vectors
Shear
32. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Pascal's Principle
Couple
Fourth Stroke (4 Stroke Engine)
no movement
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
Hydrostatics
Fluid Power
Vectors
Forces and Vectors
34. Intake of fuel and air mixture - compression of mixture by piston
First Stroke (2 Stroke Engine)
Inclined Plane
More than one force
Hydraulic Cylinders
35. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Gravity
Third Stroke (rotary)
Fluids
Pressure
36. Length / Time
If the force is applied at the center of the rotation
Second Stroke (Diesel Engine)
Velocity
more than one force
37. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Fourth Stroke (Diesel Engine)
Pressure Equation
Weight
Direction of Forces
38. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
System
Gravity
Weight
Pythagorean Theorem
39. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Translation
Diesel Engine
Internal Combustion Engine Types
Weight
40. Air is compressed - work is done on the system
Second Stroke (Diesel Engine)
Diesel Engine
Pythagorean Theorem
Internal Combustion Engine Types
41. 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
First Stroke (Diesel Engine)
Torque
Machine
First Stroke (4 Stroke Engine)
42. Compression of fuel mix
Dimension
US Customary
Pascal's Principle
Second Stroke (rotary)
43. (Force)(Distance)/Seconds
Newton's Second Law
Power Equation
will move
Effort
44. Allows comparison between different measuring systems and units - Necessary to market internationally
Fluid Power
Fourth Stroke (4 Stroke Engine)
Conversions
First Stroke (rotary)
45. A^2+b^2=c^2
Pythagorean Theorem
Gravity
System
Pythagorean Theorem Equation
46. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Hybrid Parallel
Statics
Rotary
Forces and Vectors
47. A combination of components
Pythagorean Theorem Equation
Area of a circle equation
System
Mechanical Advantage
48. 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
Forces and Vectors
First Stroke (rotary)
Units
49. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Fourth Stroke (Diesel Engine)
Volume
2 Stroke Engine
Closed System
50. Applied at an angle or parallel to a surface
Acceleration
Rotary
Shear
System
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