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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. Body in motion (car)
Torque
Dimension
Metrology
Dynamics
2. 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
Weight
Moment Arm Equation
Hydraulics
Hybrid Series
3. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Mechanical Engineering
Diesel Engine
Gravity
Fourth Stroke (4 Stroke Engine)
4. 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
will move
Hybrid
Pythagorean Theorem Equation
Newton's Second Law
5. Length / Time
Metrology
Velocity
Dynamics
Equation for Mechanical Advantage regarding inclined planes
6. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Fluids
First Stroke (4 Stroke Engine)
Mechanical Engineering
Third Stroke (rotary)
7. Same pressure - work - volume - Different forces and distances
Hydraulic Cylinders
Hydrostatics
Static
More than one force
8. 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
Mass
Closed System
Vectors
Work
9. Compression-Tension-Shear
Rotary
Power
Direction of Forces
Mass
10. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Hybrid Parallel
Second Stroke (4 Stroke Engine)
Component
Moment Arm
11. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force
System
Base Dimensions
Surroundings
If the force is applied at the center of the rotation
12. Work/force or vertical distance/sloping distance
Equation for Mechanical Advantage regarding inclined planes
Fluid
Hybrid
decrease
13. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Translation
Static
Pressure Equation
Closed System
14. Liquid or gas
Fluid
Result of Applying a force to a rigid body at rest
Fourth Stroke (Diesel Engine)
Tension
15. Psi - newtons - pascals
Gravity
Units for Pressure
Dimension
Hydrodynamics
16. 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
Volume
Units for Pressure
Machine
Power
17. Intake of fuel and air mixture - compression of mixture by piston
First Stroke (2 Stroke Engine)
Force Equation
Third Stroke (Diesel Engine)
Conversions
18. The force simple machines use to do work on a single load or against a single force
Mechanical Engineering
Effort
Mechanics describe how forces affect a body
Second Stroke (4 Stroke Engine)
19. 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)
Hydrostatics
Mechanics
Fluid Power
Power
20. 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
Power
Translation
Common Brake Characteristics
Volume
21. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Length
Forces
Force lets us do work on a system
Area of a circle equation
22. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Acceleration
Translation
Fluid Power
Second Stroke (2 Stroke Engine)
23. What we are studying
Drum Brakes
Equation for Mechanical Advantage regarding inclined planes
Shear
System
24. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Newton's Second Law
decrease
If the force is applied at the center of the rotation
Conversions
25. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Gravity
Couple
First Stroke (4 Stroke Engine)
Mechanical Advantage Equation
26. Allows comparison between different measuring systems and units - Necessary to market internationally
Conversions
Temperature
Forces
Shear
27. Describes a physical property of anything - What we are measuring
Dimension
First Stroke (2 Stroke Engine)
Translation
Aerodynamics
28. 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
Fourth Stroke (rotary)
Pressure
Weight
Mechanical Advantage
29. 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
4 Stroke Engine
Applied Brakes
Inclined Plane
Couple
30. Piston travels up and both plugs are closed
Temperature
Newton's First Law of Motion
Disc Breaks
Second Stroke (4 Stroke Engine)
31. Mass x acceleration
Mass
Third Stroke (rotary)
Velocity
Force Equation
32. Fuel is injected and combusts due to temperature of compressed air
Drum Brakes
Weight
Machine
Third Stroke (Diesel Engine)
33. Can be applied at a time on an object
Hydraulic Cylinders
Fluids
More than one force
Rotation
34. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
Diesel Engine
Mechanics
Rotation
System International (SI)
35. What we are not studying
Power Equation
Surroundings
Hydrostatics
more than one force
36. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
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37. 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
More than one force
Mechanical Engineering
Area of a circle equation
Hybrid Parallel
38. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Diesel Engine
Engineers and scientists need a common language
Fourth Stroke (rotary)
Statics
39. Varies by location (on earth) - distance (from earth) - and mass (of planet)
System
Gravity
Drum Brakes
More than one force
40. Rotation will not occur - but translation might occur
If the force is applied at the center of the rotation
Acceleration
Power Equation
Dynamics
41. Static - Dynamic
Fourth Stroke (Diesel Engine)
Mechanics describe how forces affect a body
Engineers and scientists need a common language
Pythagorean Theorem Equation
42. Describes how applied forces bring a body into motion
more than one force
Conversions
Dynamics
Static
43. Often a free body has _______ acting on it
Forces
more than one force
First Stroke (Diesel Engine)
Diesel Engine
44. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Power
Fourth Stroke (Diesel Engine)
Gravity
Disc Breaks
45. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Pythagorean Theorem
Mass
First Stroke (rotary)
Closed System
46. Force x Distance
Result of Applying a force to a rigid body at rest
Area
Moment Arm Equation
Mechanics
47. Body at rest or is in equilibrium (wall)
Disc Breaks
Fluid Power
Mechanical Advantage Equation
Static
48. A^2+b^2=c^2
Closed System
Fourth Stroke (Diesel Engine)
System International (SI)
Pythagorean Theorem Equation
49. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Open System
Fourth Stroke (rotary)
Diesel Engine
Weight
50. 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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