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. An indication of kinetic energy of mass at the molecular level
Second Stroke (2 Stroke Engine)
Moment Arm
Temperature
Base Dimensions
2. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Acceleration
Second Stroke (4 Stroke Engine)
Static
Statics
3. A^2+b^2=c^2 - used to calculate vectors
Pythagorean Theorem
Forces and Vectors
Hybrid
Couple
4. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
Rotation
Engineers and scientists need a common language
Acceleration
will move
5. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Volume
Third Stroke (4 Stroke Engine)
First Stroke (4 Stroke Engine)
Compression
6. The force simple machines use to do work on a single load or against a single force
Moment Arm
First Stroke (Diesel Engine)
Effort
Open System
7. Mass x acceleration
Equation for Mechanical Advantage regarding inclined planes
Force Equation
Inclined Plane
Vectors
8. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Rotary
Second Stroke (2 Stroke Engine)
Drum Brakes
Hybrid Parallel
9. 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
Mechanics
Component
Couple
10. Rotation may occur
Pascal's Principle
US Customary
If the force is applied away from the center of rotation
Torque
11. Body at rest or is in equilibrium (wall)
If the force is applied at the center of the rotation
2 Stroke Engine
Result of Applying a force to a rigid body at rest
Static
12. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components
Dynamics
First Stroke (rotary)
Fluids
Component
13. Mass can neither by created nor destroyed - only transformed
Units
Fluids
Hybrid Parallel
Law of Conservation of Mass
14. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Aerodynamics
Applied Brakes
Steam Engine
Area
15. One that pushes on an object
Fluid
Compression
First Stroke (4 Stroke Engine)
Forces
16. Weight/Time
Surroundings
Rotary
Length
Power Equation
17. 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
18. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Volume
Mechanical Engineering
Power Equation
decrease
19. Can be applied at a time on an object
Fourth Stroke (Diesel Engine)
Velocity
Hydrostatics
More than one force
20. 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 (
Compression
Volume
System International (SI)
Diesel Engine
21. When the sum of all forces and the sum of all moments both equal forces - No movement
Third Stroke (Diesel Engine)
Equilibrium
Steam Engine
Force lets us do work on a system
22. Psi - newtons - pascals
Inclined Plane
will move
Static
Units for Pressure
23. Dimensions and units
Statics
no movement
Direction of Forces
Engineers and scientists need a common language
24. Every object continues in motion in a straight line unless acted upon by some force -Every object at rest continues at rest unless acted upon by a force -So forces cause a change in an object's state of motion
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
25. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Translation
Vectors
First Stroke (2 Stroke Engine)
Gravity
26. The magnitude of something in a particular direction
Pythagorean Theorem
Derived Dimension
Third Stroke (rotary)
Length
27. Length / Time
Pressure Equation
Velocity
Volume
Derived Dimension
28. Compression-Tension-Shear
Direction of Forces
Applied Brakes
Power
Equation for Mechanical Advantage regarding inclined planes
29. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
System International (SI)
Pressure
Fluids
Open System
30. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Pythagorean Theorem
Direction of Forces
US Customary
Disc Breaks
31. Ignition - power stroke
Steam Engine
Inclined Plane
Third Stroke (rotary)
Dimension
32. Liquid or gas
Third Stroke (rotary)
Rotary
Fluid
Hydrostatics
33. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
First Stroke (Diesel Engine)
Moment Arm
Length
System International (SI)
34. If a force causes rotations -Vector- Machines can have more than one torque-Units: foot- pound and newton - meter - i.e. engines - airplanes - propeller
Torque
Law of Conservation of Mass
Pythagorean Theorem
Pythagorean Theorem Equation
35. 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
Area of a circle equation
Hybrid Series
Newton's First Law of Motion
36. Compression of fuel mix
Conversions
Newton's Third Law
Second Stroke (rotary)
System International (SI)
37. The branch of science and engineering involving measurement
Pythagorean Theorem Equation
Direction of Forces
Rotary
Metrology
38. 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
Force Equation
Steam Engine
Mass
Equilibrium
39. Often a free body has _______ acting on it
more than one force
Fluid
Forces
Open System
40. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Second Stroke (rotary)
Forces and Vectors
Second Stroke (4 Stroke Engine)
Applied Brakes
41. Intake of fuel and air mixture - compression of mixture by piston
Length
First Stroke (2 Stroke Engine)
Mechanics
Moment Arm Equation
42. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Temperature
Gravity
Internal Combustion Engine Types
Second Stroke (Diesel Engine)
43. 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
Rotation
Disc Breaks
Open System
Mechanical Advantage
44. Intake of fuel and air mix
Direction of Forces
First Stroke (rotary)
Law of Conservation of Mass
First Stroke (Diesel Engine)
45. Force x Distance
Mechanics
Aerodynamics
Newton's First Law of Motion
Moment Arm Equation
46. A^2+b^2=c^2
Second Stroke (2 Stroke Engine)
Compression
Pythagorean Theorem Equation
Force lets us do work on a system
47. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline
Diesel Engine
Drum Brakes
Aerodynamics
Volume
48. Air is compressed - work is done on the system
Mass
Surroundings
Second Stroke (Diesel Engine)
Compression
49. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Closed System
more than one force
Steam Engine
Fourth Stroke (4 Stroke Engine)
50. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Third Stroke (rotary)
Component
Fourth Stroke (4 Stroke Engine)
Velocity