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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. Liquid or gas
Mechanics describe how forces affect a body
2 Stroke Engine
Fluid
Second Stroke (2 Stroke Engine)
2. Mass x acceleration
Force Equation
Result of Applying a force to a rigid body at rest
Mechanical Engineering
Statics
3. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
First Stroke (rotary)
Acceleration
Component
Newton's Second Law
4. Ignition - power stroke
Hybrid
Third Stroke (rotary)
US Customary
Hybrid Series
5. An indication of kinetic energy of mass at the molecular level
Temperature
2 Stroke Engine
System
More than one force
6. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Direction of Forces
Fluids
Aerodynamics
Forces and Vectors
7. 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
Tension
Moment Arm Equation
Moment Arm
Hydraulics
8. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
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9. The branch of science and engineering involving measurement
Statics
Rotary
Hydraulics
Metrology
10. Length x Width x Height
Volume
Length
Conversions
Result of Applying a force to a rigid body at rest
11. Applied at an angle or parallel to a surface
Shear
Newton's Second Law
Units
Equation for Mechanical Advantage regarding inclined planes
12. Weight/Time
Power Equation
First Stroke (2 Stroke Engine)
decrease
Force lets us do work on a system
13. 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
Pascal's Principle
Hybrid Series
Units for Pressure
Inclined Plane
14. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Forces and Vectors
Hybrid Parallel
Pythagorean Theorem
Pythagorean Theorem Equation
15. 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
Volume
Compression
Power
US Customary
16. Allows comparison between different measuring systems and units - Necessary to market internationally
Statics
Surroundings
Area Equation
Conversions
17. Combustion of fuel mixture ignited by spark plug
Gravity
Engineers and scientists need a common language
Second Stroke (2 Stroke Engine)
Fluids
18. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Pythagorean Theorem
decrease
System
Dynamics
19. Intake of fuel and air mixture - compression of mixture by piston
First Stroke (2 Stroke Engine)
Metrology
Area Equation
Derived Dimension
20. 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
4 Stroke Engine
Equilibrium
Pythagorean Theorem
21. (Force)(Distance)/Seconds
Fourth Stroke (rotary)
Third Stroke (Diesel Engine)
Moment Arm
Power Equation
22. When the moving fluid is a gas
Fourth Stroke (rotary)
Mechanical Advantage Equation
Aerodynamics
2 Stroke Engine
23. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Hydrostatics
Inclined Plane
Pythagorean Theorem
Metrology
24. ICE generates electricity for electric battery -Electric motor turns wheels
Hybrid Series
Hybrid Parallel
System International (SI)
US Customary
25. 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
Mechanical Engineering
Gravity
Open System
Dynamics
26. 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
Applied Brakes
Hydraulics
Inclined Plane
27. Length x Width
Mechanical Engineering
Derived Dimension
Conversions
Area Equation
28. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Metrology
Diesel Engine
Fluids
System
29. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Area of a circle equation
Forces
Applied Brakes
Mechanics
30. A combination of components
Area Equation
System
Force Equation
Volume
31. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Disc Breaks
Mechanical Advantage
Hybrid Parallel
Weight
32. The magnitude of something in a particular direction
Length
US Customary
Force Equation
Mechanical Advantage Equation
33. Mass can neither by created nor destroyed - only transformed
Steam Engine
Volume
Law of Conservation of Mass
Statics
34. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)
Machine
2 Stroke Engine
Area of a circle equation
Derived Dimension
35. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Surroundings
Acceleration
Area
Mechanics describe how forces affect a body
36. Three- dimensional property measured in units of length times length times length =length x width x height
Common Brake Characteristics
Volume
Area of a circle equation
Result of Applying a force to a rigid body at rest
37. The force simple machines use to do work on a single load or against a single force
Fluids
Component
Machine
Effort
38. When the fluid is in motion
Hydrodynamics
Volume
Applied Brakes
Inclined Plane
39. 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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40. Can be applied at a time on an object
More than one force
System International (SI)
Force lets us do work on a system
Effort
41. 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
First Stroke (Diesel Engine)
Hybrid
Units for Pressure
Forces and Vectors
42. Body in motion (car)
Mechanical Advantage Equation
Dynamics
Temperature
Base Dimensions
43. Air is drawn in
US Customary
First Stroke (Diesel Engine)
Third Stroke (rotary)
Aerodynamics
44. Static - Dynamic
Drum Brakes
First Stroke (4 Stroke Engine)
Mechanics describe how forces affect a body
Acceleration
45. External Combustion engine -Only used in factories and plants (not used in cars)
US Customary
Drum Brakes
Steam Engine
Component
46. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Couple
Velocity
Closed System
Gravity
47. Translation (slide) -Rotate -Slide and Rotate Together
Weight
Hydraulics
Volume
Result of Applying a force to a rigid body at rest
48. 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
Hydraulics
Equilibrium
Newton's Second Law
Work
49. Same pressure - work - volume - Different forces and distances
System
Acceleration
Disc Breaks
Hydraulic Cylinders
50. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
Fluid
Drum Brakes
Pascal's Principle
Area Equation