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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. Rotation will not occur - but translation might occur
If the force is applied at the center of the rotation
Area Equation
Third Stroke (Diesel Engine)
First Stroke (2 Stroke Engine)
2. The branch of science and engineering involving measurement
Metrology
Common Brake Characteristics
Pythagorean Theorem
Newton's First Law of Motion
3. (pi) x (radius)^2
Area of a circle equation
Derived Dimension
4 Stroke Engine
Hybrid
4. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human
Closed System
Area of a circle equation
Internal Combustion Engine Types
Metrology
5. Length / Time
Machine
US Customary
Velocity
First Stroke (rotary)
6. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human
Pythagorean Theorem
more than one force
Moment Arm
Open System
7. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute
Second Stroke (Diesel Engine)
no movement
Units
Third Stroke (Diesel Engine)
8. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2
Power
Units for Pressure
Acceleration
Fourth Stroke (rotary)
9. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2
Fourth Stroke (Diesel Engine)
Internal Combustion Engine Types
Gravity
Torque
10. Piston travels down and intake valve is opened. Intake of fuel and air into chamber
Area of a circle equation
Result of Applying a force to a rigid body at rest
Third Stroke (Diesel Engine)
First Stroke (4 Stroke Engine)
11. Body at rest or is in equilibrium (wall)
Shear
Third Stroke (4 Stroke Engine)
Static
Moment Arm Equation
12. Allows comparison between different measuring systems and units - Necessary to market internationally
Closed System
Force lets us do work on a system
Conversions
2 Stroke Engine
13. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous
Gravity
Pythagorean Theorem
Third Stroke (4 Stroke Engine)
Component
14. 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 (
more than one force
System International (SI)
Couple
will move
15. 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
Fourth Stroke (rotary)
Tension
Pythagorean Theorem Equation
16. Mechanics is an application of math that describes how forces affect a body
Conversions
Mechanics
Dynamics
First Stroke (4 Stroke Engine)
17. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Work
Length
Couple
decrease
18. 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
Result of Applying a force to a rigid body at rest
Surroundings
Applied Brakes
more than one force
19. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Newton's First Law of Motion
Volume
Steam Engine
Forces and Vectors
20. 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
Fluid Power
Second Stroke (rotary)
US Customary
Rotary
21. Can be applied at a time on an object
Derived Dimension
Power Equation
Fluid
More than one force
22. Combustion ignited by spark plug and materials are compressed
Metrology
Forces and Vectors
Third Stroke (4 Stroke Engine)
If the force is applied away from the center of rotation
23. Ignition - power stroke
Torque
Hybrid Parallel
Third Stroke (rotary)
Power
24. Intake of fuel and air mix
Hybrid Series
Pythagorean Theorem
Mechanical Advantage
First Stroke (rotary)
25. Intake of fuel and air mixture - compression of mixture by piston
First Stroke (2 Stroke Engine)
US Customary
First Stroke (rotary)
Tension
26. Piston travels up and exhaust valve opens. Combustion by product exhaustion
Torque
Fourth Stroke (4 Stroke Engine)
Hydraulic Cylinders
Fluid Power
27. Piston travels up and both plugs are closed
Second Stroke (4 Stroke Engine)
System International (SI)
Fluid Power
no movement
28. Two stroke- Four Stroke- Diesel-Rotary -Hybrid
Mechanical Advantage Equation
Internal Combustion Engine Types
2 Stroke Engine
Moment Arm
29. Body in motion (car)
Power Equation
Component
Hydrostatics
Dynamics
30. A^2+b^2=c^2
Volume
Pythagorean Theorem Equation
Dynamics
Temperature
31. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment
Equation for Mechanical Advantage regarding inclined planes
Moment Arm
Engineers and scientists need a common language
More than one force
32. Can be reduced by decreasing the weight or force or increasing the area i.e. airbag
Pressure
Engineers and scientists need a common language
Pascal's Principle
Steam Engine
33. 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
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34. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive
Power
Disc Breaks
Surroundings
Mechanics
35. 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
Vectors
decrease
Hydraulics
Applied Brakes
36. The force simple machines use to do work on a single load or against a single force
First Stroke (4 Stroke Engine)
Drum Brakes
Couple
Effort
37. What we are not studying
Base Dimensions
Surroundings
Length
Dynamics
38. Length x Width x Height
Pascal's Principle
Equation for Mechanical Advantage regarding inclined planes
Volume
Rotary
39. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Area of a circle equation
Translation
Mechanical Advantage
Component
40. Static - Dynamic
First Stroke (4 Stroke Engine)
Mechanics describe how forces affect a body
Hydrodynamics
Component
41. (Force)(Distance)/Seconds
Inclined Plane
Gravity
Units
Power Equation
42. Dimensions and units
Units
First Stroke (2 Stroke Engine)
Dynamics
Engineers and scientists need a common language
43. When the fluid is in motion
Hydrodynamics
First Stroke (2 Stroke Engine)
will move
System International (SI)
44. Mass can neither by created nor destroyed - only transformed
Law of Conservation of Mass
Fluids
Newton's Second Law
Area
45. 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
Third Stroke (Diesel Engine)
Area
Dimension
Work
46. When the moving fluid is a gas
Inclined Plane
Aerodynamics
Mechanical Advantage Equation
Area
47. Often a free body has _______ acting on it
more than one force
Gravity
Derived Dimension
Applied Brakes
48. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force
Forces
System
2 Stroke Engine
Area of a circle equation
49. Three- dimensional property measured in units of length times length times length =length x width x height
Power Equation
Volume
Third Stroke (rotary)
no movement
50. Liquid or gas
Forces
Units for Pressure
Pythagorean Theorem
Fluid