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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. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)
4 Stroke Engine
Shear
Derived Dimension
Closed System
2. Length x Width
Second Stroke (2 Stroke Engine)
Mechanics
Tension
Area Equation
3. Ignition - power stroke
Third Stroke (rotary)
Vectors
Steam Engine
Pressure
4. Translation (slide) -Rotate -Slide and Rotate Together
Dynamics
Result of Applying a force to a rigid body at rest
Hybrid Series
First Stroke (Diesel Engine)
5. Length x Width x Height
Pressure
Volume
Mechanical Engineering
Hybrid Parallel
6. (Force)(Distance)/Seconds
Couple
First Stroke (rotary)
Pressure
Power Equation
7. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Area
Fourth Stroke (rotary)
Hydraulic Cylinders
Moment Arm
8. 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
Equation for Mechanical Advantage regarding inclined planes
Open System
Vectors
Acceleration
9. 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
System
Mechanical Engineering
System
Result of Applying a force to a rigid body at rest
10. Mechanics is an application of math that describes how forces affect a body
Rotation
Vectors
Fluids
Mechanics
11. Three- dimensional property measured in units of length times length times length =length x width x height
Mechanical Advantage Equation
Temperature
Volume
Pressure
12. Force without machine/Force with machine
Mechanical Advantage Equation
Common Brake Characteristics
Fluid
Closed System
13. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Acceleration
Steam Engine
US Customary
Pythagorean Theorem
14. Body in motion (car)
Steam Engine
Engineers and scientists need a common language
Dynamics
Volume
15. ICE generates electricity for electric battery -Electric motor turns wheels
more than one force
Hybrid Series
Mechanics
Work
16. Force x Distance
Effort
Moment Arm Equation
Mechanics describe how forces affect a body
Mass
17. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Mechanics
Second Stroke (Diesel Engine)
Fluid Power
Static
18. 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
Units for Pressure
Applied Brakes
Machine
Static
19. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Gravity
Hydrostatics
Force lets us do work on a system
Metrology
20. Body at rest or is in equilibrium (wall)
Rotary
Hydraulic Cylinders
Mechanical Engineering
Static
21. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Forces and Vectors
System International (SI)
decrease
Vectors
22. The magnitude of something in a particular direction
Length
decrease
Pressure
Compression
23. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Rotation
Diesel Engine
System
Hydrodynamics
24. 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
Translation
Hydraulics
2 Stroke Engine
Weight
25. Combustion of fuel mixture ignited by spark plug
System International (SI)
Third Stroke (rotary)
Hydrodynamics
Second Stroke (2 Stroke Engine)
26. Piston travels up and both plugs are closed
decrease
Second Stroke (4 Stroke Engine)
Tension
Second Stroke (rotary)
27. 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
Power Equation
4 Stroke Engine
Power Equation
Area of a circle equation
28. Exhaust
System International (SI)
Vectors
Gravity
Fourth Stroke (Diesel Engine)
29. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Mechanics
Component
Force Equation
First Stroke (rotary)
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
Steam Engine
System International (SI)
Torque
Work
31. (pi) x (radius)^2
Second Stroke (rotary)
Common Brake Characteristics
Area of a circle equation
Statics
32. The force simple machines use to do work on a single load or against a single force
Applied Brakes
Component
Power Equation
Effort
33. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
First Stroke (rotary)
Weight
Couple
Translation
34. Air is drawn in
First Stroke (Diesel Engine)
Second Stroke (2 Stroke Engine)
Metrology
Fluid
35. More compact (size of beer keg) - No valves -Benefits: fewer parts - lower engine weight Problems: seal - lower inertia forces -1 rotar=3 to 4 pistons
Rotary
Length
Equation for Mechanical Advantage regarding inclined planes
Units
36. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Hydrodynamics
Gravity
Newton's Second Law
Hybrid Series
37. When the fluid is in motion
Hydrodynamics
Fluid
Gravity
Dimension
38. Same pressure - work - volume - Different forces and distances
Hydrodynamics
Force lets us do work on a system
Compression
Hydraulic Cylinders
39. Dimensions and units
Hybrid
Closed System
Moment Arm
Engineers and scientists need a common language
40. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Internal Combustion Engine Types
Conversions
Pythagorean Theorem Equation
Moment Arm Equation
41. When fluid is at rest
Hydrostatics
Acceleration
Power
Fluid Power
42. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Newton's Third Law
Second Stroke (rotary)
Hybrid Parallel
Third Stroke (Diesel Engine)
43. 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
Surroundings
Inclined Plane
Metrology
Compression
44. What we are not studying
First Stroke (4 Stroke Engine)
Length
Surroundings
Shear
45. A^2+b^2=c^2 - used to calculate vectors
Hydrostatics
Force lets us do work on a system
Pythagorean Theorem
Gravity
46. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
First Stroke (4 Stroke Engine)
Area
If the force is applied away from the center of rotation
Fourth Stroke (Diesel Engine)
47. 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
Hydraulics
Fluids
System International (SI)
48. 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
Hydraulic Cylinders
Applied Brakes
Mechanics
decrease
49. Mass x acceleration
Mechanics describe how forces affect a body
Force Equation
Power
Statics
50. Compression-Tension-Shear
Direction of Forces
First Stroke (Diesel Engine)
Compression
Mass