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. A^2+b^2=c^2 - used to calculate vectors
Power Equation
Pythagorean Theorem
Conversions
Mechanical Advantage Equation
2. (Force)(Distance)/Seconds
Power Equation
Component
System
Base Dimensions
3. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Machine
Couple
Forces
Steam Engine
4. Force without machine/Force with machine
First Stroke (Diesel Engine)
If the force is applied at the center of the rotation
Mechanical Advantage Equation
Hydraulics
5. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Third Stroke (Diesel Engine)
Hybrid Parallel
Mechanical Engineering
Fourth Stroke (4 Stroke Engine)
6. Three- dimensional property measured in units of length times length times length =length x width x height
Area
Conversions
Force lets us do work on a system
Volume
7. When the work done by the effort exceeds the work done by the load - the load...
Power Equation
will move
Forces
Fluid
8. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Power Equation
Statics
Translation
Effort
9. Rotation may occur
Forces and Vectors
will move
If the force is applied away from the center of rotation
Fourth Stroke (Diesel Engine)
10. Force and mass are proportional to each other (F=ma) -If F increases - so does acceleration -Force causes acceleration - More force means more acceleration - same mass - More mass means less acceleration - same force
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
11. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Gravity
Mechanics describe how forces affect a body
Weight
Volume
12. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
If the force is applied away from the center of rotation
Component
Closed System
Result of Applying a force to a rigid body at rest
13. What we are studying
Acceleration
decrease
System
Power
14. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Internal Combustion Engine Types
Fluid
Forces
Force lets us do work on a system
15. Exhaust of combustion products
Pressure Equation
Fourth Stroke (rotary)
Shear
Second Stroke (4 Stroke Engine)
16. Exhaust
Fourth Stroke (Diesel Engine)
Units for Pressure
Effort
Surroundings
17. Work/force or vertical distance/sloping distance
Equation for Mechanical Advantage regarding inclined planes
Pressure Equation
Machine
Mechanical Advantage Equation
18. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Vectors
Direction of Forces
Equilibrium
Disc Breaks
19. Body at rest or is in equilibrium (wall)
Static
decrease
Hydraulics
Derived Dimension
20. For every action there is an equal and opposite reaction -Force -F=mg -Earth exerts a force on all of us
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
21. When the moving fluid is a gas
Mechanical Advantage Equation
Aerodynamics
Moment Arm Equation
Hydrostatics
22. Translation (slide) -Rotate -Slide and Rotate Together
Base Dimensions
Hybrid Parallel
Result of Applying a force to a rigid body at rest
Area
23. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert
If the force is applied away from the center of rotation
Area of a circle equation
Units for Pressure
Drum Brakes
24. 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)
Third Stroke (Diesel Engine)
Power
Area of a circle equation
Hybrid Series
25. 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
Effort
Rotation
Hydraulics
Mechanical Engineering
26. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Rotary
Force lets us do work on a system
Newton's Second Law
Forces and Vectors
27. 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
Units
Common Brake Characteristics
Dimension
Units for Pressure
28. When fluid is at rest
Hydrodynamics
Equation for Mechanical Advantage regarding inclined planes
Equilibrium
Hydrostatics
29. When the work done by the effort just equals the work done by the load - ______ of the machine will occur
Newton's First Law of Motion
Gravity
no movement
Statics
30. 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
Tension
Machine
Mechanics describe how forces affect a body
US Customary
31. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Second Stroke (rotary)
Equation for Mechanical Advantage regarding inclined planes
Translation
Area
32. 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 (
System International (SI)
Surroundings
Hydrodynamics
Inclined Plane
33. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Fourth Stroke (Diesel Engine)
Third Stroke (4 Stroke Engine)
Fourth Stroke (4 Stroke Engine)
Gravity
34. Describes a physical property of anything - What we are measuring
Shear
Force lets us do work on a system
Dimension
Pythagorean Theorem Equation
35. 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
Steam Engine
Machine
Power Equation
Forces
36. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human
Equilibrium
Open System
Mechanics
4 Stroke Engine
37. 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
Drum Brakes
4 Stroke Engine
Third Stroke (Diesel Engine)
Hybrid Series
38. Mass can neither by created nor destroyed - only transformed
Newton's First Law of Motion
Compression
US Customary
Law of Conservation of Mass
39. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)
Component
Derived Dimension
Mechanical Advantage Equation
Hydraulic Cylinders
40. Psi - newtons - pascals
Tension
Law of Conservation of Mass
Drum Brakes
Units for Pressure
41. Combustion of fuel mixture ignited by spark plug
Dynamics
Derived Dimension
Second Stroke (2 Stroke Engine)
Units for Pressure
42. Mechanics is an application of math that describes how forces affect a body
Mechanics
Direction of Forces
Diesel Engine
Acceleration
43. Ignition - power stroke
Gravity
Power Equation
Third Stroke (rotary)
Law of Conservation of Mass
44. 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
Fluid
Rotary
Dimension
Forces
45. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
decrease
Law of Conservation of Mass
Hybrid Series
Fluid Power
46. Length x Width x Height
Drum Brakes
Volume
Velocity
Second Stroke (rotary)
47. A combination of components
Open System
System
Hybrid Parallel
Second Stroke (rotary)
48. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
2 Stroke Engine
Drum Brakes
Gravity
Closed System
49. 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
Inclined Plane
Second Stroke (rotary)
Statics
Work
50. 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
Conversions
Surroundings
Rotation
Hybrid