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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. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing
Compression
Fourth Stroke (4 Stroke Engine)
Applied Brakes
Hybrid Parallel
2. What we are not studying
Units for Pressure
Metrology
Pressure Equation
Surroundings
3. Body at rest or is in equilibrium (wall)
Torque
Static
Power
Forces and Vectors
4. Applied at an angle or parallel to a surface
Fourth Stroke (4 Stroke Engine)
Base Dimensions
Applied Brakes
Shear
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
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6. Length x Width x Height
Acceleration
Couple
Velocity
Volume
7. What we are studying
System
Moment Arm
Pascal's Principle
Fourth Stroke (Diesel Engine)
8. Translation (slide) -Rotate -Slide and Rotate Together
Result of Applying a force to a rigid body at rest
Volume
Hydrostatics
Fourth Stroke (4 Stroke Engine)
9. Describes how applied forces bring a body into rest or equilibrium
Statics
Drum Brakes
Area
If the force is applied at the center of the rotation
10. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)
Applied Brakes
Fluids
Closed System
Diesel Engine
11. Movement along a line (reciprocal or linear motion) -Units: feet and meters
Hydrostatics
Translation
Direction of Forces
Third Stroke (rotary)
12. 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
Shear
Hybrid
decrease
Pascal's Principle
13. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N
Pythagorean Theorem Equation
Weight
Mass
Base Dimensions
14. Varies by location (on earth) - distance (from earth) - and mass (of planet)
Gravity
Second Stroke (2 Stroke Engine)
System
Mechanics
15. 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
Work
Dynamics
Direction of Forces
Common Brake Characteristics
16. Compression-Tension-Shear
Power Equation
Second Stroke (4 Stroke Engine)
Direction of Forces
First Stroke (2 Stroke Engine)
17. When the sum of all forces and the sum of all moments both equal forces - No movement
Applied Brakes
Second Stroke (2 Stroke Engine)
Equilibrium
More than one force
18. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet
Power
First Stroke (4 Stroke Engine)
Couple
Component
19. Combustion of fuel mixture ignited by spark plug
Steam Engine
Pythagorean Theorem
Units for Pressure
Second Stroke (2 Stroke Engine)
20. 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
Fluid
Statics
Tension
Mechanical Engineering
21. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)
Component
Rotation
Force Equation
Statics
22. Piston travels up and both plugs are closed
Internal Combustion Engine Types
Second Stroke (4 Stroke Engine)
Result of Applying a force to a rigid body at rest
Power Equation
23. 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
Forces and Vectors
First Stroke (4 Stroke Engine)
More than one force
Applied Brakes
24. Three- dimensional property measured in units of length times length times length =length x width x height
Volume
Pythagorean Theorem
Temperature
Hybrid Series
25. When fluid is at rest
Disc Breaks
Hybrid Parallel
Hydrostatics
Area Equation
26. A pull on an object
Acceleration
Work
System
Tension
27. ICE generates electricity for electric battery -Electric motor turns wheels
Gravity
Work
More than one force
Hybrid Series
28. 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
Area Equation
Component
Compression
Rotary
29. Psi - newtons - pascals
Acceleration
Diesel Engine
Units for Pressure
Power
30. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width
Velocity
If the force is applied at the center of the rotation
Area
Dynamics
31. Body in motion (car)
Dynamics
Aerodynamics
no movement
Gravity
32. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied
Conversions
Area of a circle equation
Law of Conservation of Mass
Fluid Power
33. Static - Dynamic
Hybrid Series
Area of a circle equation
Pythagorean Theorem
Mechanics describe how forces affect a body
34. Rotation will not occur - but translation might occur
Area Equation
Surroundings
If the force is applied at the center of the rotation
Pythagorean Theorem
35. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid
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36. A^2+b^2=c^2 - used to calculate vectors
Units
Pythagorean Theorem
Derived Dimension
Torque
37. Exhaust
Shear
Mass
Fourth Stroke (Diesel Engine)
If the force is applied at the center of the rotation
38. Allows comparison between different measuring systems and units - Necessary to market internationally
Conversions
will move
Dynamics
System
39. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S
Machine
Forces and Vectors
Fourth Stroke (rotary)
If the force is applied away from the center of rotation
40. 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
more than one force
Fourth Stroke (Diesel Engine)
Gravity
Inclined Plane
41. Intake of fuel and air mix
Result of Applying a force to a rigid body at rest
System International (SI)
First Stroke (rotary)
Surroundings
42. 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)
Disc Breaks
Power
Newton's Third Law
Second Stroke (Diesel Engine)
43. The magnitude of something in a particular direction
Length
Pythagorean Theorem Equation
Forces
Metrology
44. (Force)(Distance)/Seconds
Length
no movement
Units for Pressure
Power Equation
45. Exhaust of combustion products
Force Equation
Rotary
Fourth Stroke (rotary)
Aerodynamics
46. An indication of kinetic energy of mass at the molecular level
First Stroke (rotary)
More than one force
Mechanics
Temperature
47. Same pressure - work - volume - Different forces and distances
Shear
Drum Brakes
Hybrid Parallel
Hydraulic Cylinders
48. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved
Static
decrease
Second Stroke (Diesel Engine)
more than one force
49. Liquid or gas
Newton's Second Law
Drum Brakes
Vectors
Fluid
50. Force x Distance
Moment Arm Equation
Volume
Rotary
Second Stroke (Diesel Engine)