SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. 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
Result of Applying a force to a rigid body at rest
Second Stroke (rotary)
Hybrid Parallel
2. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Power Equation
Fluid
First Stroke (4 Stroke Engine)
Equation for Mechanical Advantage regarding inclined planes
3. Mass can neither by created nor destroyed - only transformed
More than one force
more than one force
Law of Conservation of Mass
US Customary
4. 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
Mechanical Advantage
no movement
Fluids
5. Describes how applied forces bring a body into motion
4 Stroke Engine
First Stroke (rotary)
Pressure Equation
Dynamics
6. Combustion ignited by spark plug and materials are compressed
Hydraulics
Compression
Component
Third Stroke (4 Stroke Engine)
7. Mass x acceleration
Static
Force Equation
decrease
Aerodynamics
8. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Base Dimensions
Forces and Vectors
Area Equation
Fluid Power
9. Allows comparison between different measuring systems and units - Necessary to market internationally
First Stroke (Diesel Engine)
Conversions
More than one force
2 Stroke Engine
10. A pull on an object
Fluid
Pascal's Principle
Tension
Applied Brakes
11. Fuel is injected and combusts due to temperature of compressed air
Newton's First Law of Motion
Third Stroke (Diesel Engine)
System International (SI)
Diesel Engine
12. Body in motion (car)
Temperature
Pythagorean Theorem Equation
Dynamics
Second Stroke (2 Stroke Engine)
13. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Dynamics
Rotary
Mass
Disc Breaks
14. 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
Second Stroke (Diesel Engine)
4 Stroke Engine
Power Equation
Base Dimensions
15. Same pressure - work - volume - Different forces and distances
Hydraulic Cylinders
First Stroke (rotary)
Metrology
Pythagorean Theorem
16. The force simple machines use to do work on a single load or against a single force
If the force is applied at the center of the rotation
Effort
Fluid Power
US Customary
17. When the sum of all forces and the sum of all moments both equal forces - No movement
Equilibrium
Mechanics
Pythagorean Theorem
Mechanical Advantage Equation
18. ICE generates electricity for electric battery -Electric motor turns wheels
Third Stroke (Diesel Engine)
Effort
Steam Engine
Hybrid Series
19. Pistons connected to crankshaft -1 stroke up - 1 stroke down of the piston -1 rotation of the piston -Problems: high emissions - noisy - inefficient - high vibrations - unburnt fuel - burnt oil -Benefits: small and light -Being phased out in USA - i.
2 Stroke Engine
Disc Breaks
Couple
Power Equation
20. 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
Fourth Stroke (4 Stroke Engine)
Hybrid Series
Dynamics
Work
21. Air is drawn in
Translation
Conversions
Forces
First Stroke (Diesel Engine)
22. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Gravity
more than one force
Fluids
Pressure Equation
23. Intake of fuel and air mix
Closed System
First Stroke (rotary)
Weight
Fluids
24. When the fluid is in motion
Hybrid Series
Hydrodynamics
Derived Dimension
Engineers and scientists need a common language
25. Length x Width
Power
Area Equation
Dynamics
Hydrodynamics
26. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Translation
Third Stroke (rotary)
Hybrid
more than one force
27. 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
Aerodynamics
Inclined Plane
will move
If the force is applied at the center of the rotation
28. 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
Mass
Fourth Stroke (Diesel Engine)
Pythagorean Theorem Equation
Hybrid Parallel
29. Ignition - power stroke
Direction of Forces
Fluid
Third Stroke (rotary)
Weight
30. Exhaust
Aerodynamics
Fourth Stroke (Diesel Engine)
Drum Brakes
Metrology
31. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Base Dimensions
Component
Mechanics describe how forces affect a body
Applied Brakes
32. Force x Distance
Mechanics describe how forces affect a body
Moment Arm Equation
System International (SI)
2 Stroke Engine
33. Describes how applied forces bring a body into rest or equilibrium
Mechanical Advantage
Statics
Component
US Customary
34. Work/force or vertical distance/sloping distance
Equation for Mechanical Advantage regarding inclined planes
Fourth Stroke (4 Stroke Engine)
Units for Pressure
Rotary
35. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Pythagorean Theorem
Fourth Stroke (4 Stroke Engine)
Mechanics describe how forces affect a body
Forces
36. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human
Power Equation
Hydraulic Cylinders
Open System
Velocity
37. Three- dimensional property measured in units of length times length times length =length x width x height
Volume
Dynamics
Pascal's Principle
Power Equation
38. Dimensions and units
Power
Engineers and scientists need a common language
Mass
First Stroke (4 Stroke Engine)
39. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Law of Conservation of Mass
4 Stroke Engine
Third Stroke (rotary)
Hybrid Parallel
40. Exhaust of combustion products
US Customary
Hybrid Series
Disc Breaks
Fourth Stroke (rotary)
41. A^2+b^2=c^2
Fourth Stroke (Diesel Engine)
Power
Pythagorean Theorem Equation
Weight
42. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Rotation
Length
Hybrid
Closed System
43. Describes a physical property of anything - What we are measuring
Derived Dimension
Dimension
First Stroke (4 Stroke Engine)
Third Stroke (Diesel Engine)
44. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Internal Combustion Engine Types
Pascal's Principle
Drum Brakes
First Stroke (Diesel Engine)
45. Force without machine/Force with machine
Pascal's Principle
Temperature
Mechanical Advantage Equation
Steam Engine
46. 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
Mechanical Advantage Equation
Hydraulics
Hydrodynamics
Hybrid Series
47. When the work done by the effort exceeds the work done by the load - the load...
will move
System International (SI)
If the force is applied at the center of the rotation
Equilibrium
48. Applied at an angle or parallel to a surface
Units for Pressure
Force Equation
Velocity
Shear
49. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Dynamics
Couple
Steam Engine
US Customary
50. Liquid or gas
Translation
Power
Fluid
Power Equation