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. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Diesel Engine
Law of Conservation of Mass
Engineers and scientists need a common language
If the force is applied away from the center of rotation
2. When fluid is at rest
Third Stroke (4 Stroke Engine)
Mechanical Advantage Equation
Hydrostatics
Newton's Second Law
3. If a force causes rotations -Vector- Machines can have more than one torque-Units: foot- pound and newton - meter - i.e. engines - airplanes - propeller
Temperature
Torque
Hydrostatics
First Stroke (Diesel Engine)
4. (pi) x (radius)^2
Base Dimensions
Direction of Forces
Area of a circle equation
Fourth Stroke (rotary)
5. 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
6. Body at rest or is in equilibrium (wall)
Static
Shear
Hydraulic Cylinders
Diesel Engine
7. Three- dimensional property measured in units of length times length times length =length x width x height
Hydraulics
Area Equation
Volume
Mechanical Advantage
8. ICE generates electricity for electric battery -Electric motor turns wheels
Internal Combustion Engine Types
Hybrid Series
Dynamics
Compression
9. Force without machine/Force with machine
Acceleration
Common Brake Characteristics
Mechanical Advantage Equation
Newton's First Law of Motion
10. 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
First Stroke (4 Stroke Engine)
Work
more than one force
Dynamics
11. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Force lets us do work on a system
Equilibrium
Gravity
more than one force
12. Liquid or gas
Aerodynamics
Fluid
Tension
Force Equation
13. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Mechanical Advantage Equation
Moment Arm
Drum Brakes
Equation for Mechanical Advantage regarding inclined planes
14. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human
Open System
4 Stroke Engine
Applied Brakes
Fourth Stroke (Diesel Engine)
15. 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
Area Equation
Equilibrium
Torque
Inclined Plane
16. External Combustion engine -Only used in factories and plants (not used in cars)
Steam Engine
Vectors
System International (SI)
Area of a circle equation
17. A^2+b^2=c^2 - used to calculate vectors
Aerodynamics
Mechanical Advantage Equation
Base Dimensions
Pythagorean Theorem
18. 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
Mass
Common Brake Characteristics
Rotary
Result of Applying a force to a rigid body at rest
19. Work/force or vertical distance/sloping distance
Hydraulic Cylinders
Fourth Stroke (Diesel Engine)
Equation for Mechanical Advantage regarding inclined planes
Pythagorean Theorem Equation
20. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Moment Arm Equation
Fluid Power
Volume
Conversions
21. Translation (slide) -Rotate -Slide and Rotate Together
Result of Applying a force to a rigid body at rest
Hybrid
Conversions
Volume
22. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Fluids
More than one force
Second Stroke (Diesel Engine)
Newton's First Law of Motion
23. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
First Stroke (4 Stroke Engine)
Common Brake Characteristics
Internal Combustion Engine Types
Gravity
24. Ignition - power stroke
Third Stroke (rotary)
System
Newton's Third Law
Fluid Power
25. Air is drawn in
First Stroke (Diesel Engine)
Disc Breaks
Pascal's Principle
Hybrid
26. 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
Force Equation
Area Equation
Steam Engine
Hybrid
27. What we are studying
System
Pascal's Principle
Common Brake Characteristics
Mass
28. Body in motion (car)
Newton's Third Law
Dynamics
Direction of Forces
Surroundings
29. Rotation may occur
Steam Engine
If the force is applied away from the center of rotation
Gravity
Closed System
30. The magnitude of something in a particular direction
Surroundings
Mass
Rotary
Length
31. 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
Newton's Third Law
Mechanical Engineering
If the force is applied away from the center of rotation
Mechanical Advantage Equation
32. When the work done by the effort just equals the work done by the load - ______ of the machine will occur
Second Stroke (4 Stroke Engine)
If the force is applied away from the center of rotation
no movement
Base Dimensions
33. What we are not studying
Surroundings
US Customary
Weight
Hydraulics
34. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
will move
Mechanics
Component
Rotation
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
Fluids
Shear
Machine
Volume
36. 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
Mechanical Advantage
no movement
Equilibrium
Third Stroke (rotary)
37. When the moving fluid is a gas
Law of Conservation of Mass
System International (SI)
Pythagorean Theorem
Aerodynamics
38. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Pascal's Principle
Area
Drum Brakes
Hydrodynamics
39. Force x Distance
Power Equation
Moment Arm Equation
First Stroke (Diesel Engine)
Moment Arm
40. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
41. 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
Hydrodynamics
Dynamics
4 Stroke Engine
Drum Brakes
42. A combination of components
System
Weight
Shear
Equation for Mechanical Advantage regarding inclined planes
43. Can be reduced by decreasing the weight or force or increasing the area i.e. airbag
Pressure
Equation for Mechanical Advantage regarding inclined planes
Area of a circle equation
Pythagorean Theorem
44. Psi - newtons - pascals
no movement
Engineers and scientists need a common language
Units for Pressure
Base Dimensions
45. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Applied Brakes
Static
decrease
Closed System
46. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Second Stroke (4 Stroke Engine)
Pythagorean Theorem
Fourth Stroke (Diesel Engine)
Equilibrium
47. 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
Second Stroke (Diesel Engine)
Internal Combustion Engine Types
Mass
Effort
48. 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)
Gravity
Shear
Power
Newton's First Law of Motion
49. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Internal Combustion Engine Types
Equilibrium
Open System
First Stroke (rotary)
50. When the sum of all forces and the sum of all moments both equal forces - No movement
Pythagorean Theorem
Moment Arm
Equilibrium
Newton's Third Law