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MAAP REVIEW > Mehanical > Flashcards

Mehanical Flashcards

1
Q

Which of the following tools is used to smooth or level a piece of wood.

A

PLANE

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2
Q

Tool used to draw circles of various sizes

A

Compass

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3
Q

Vice grips

A

Locking pliers

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4
Q

Can gears be used to change the speed of a machine?

A

2 gears of different sizes

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5
Q

used to change direction of a pulling force

A

Pulley

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6
Q

Most resembles a lever

A

Seesaw

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7
Q

When a canonball is fired at an upward angle from the surface of the earth, which causes it to come back to the surface of the earth?

A

Gravity

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8
Q

Least elastic

A

Paper

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9
Q

Purpose of a camshaft

A

whipurpose of camshaft in internal combustion engine is to transfer energy to the drive train

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10
Q

Vernier Caliper

A

For Measuring

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11
Q

Lever

A

Used to gain a mechanical advantage

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12
Q

Types pf adjustable wrenches

A

Crescent wrench, pipe wrench, channel locks

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13
Q

What type of gauge would be read in units of mph?

A

Speed gauge

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14
Q

Scale/units of speedometer

A

Mph and kph

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15
Q

Foundation

A

Constructed 1st before all others

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16
Q

Which of the ff materials may be used for structural purposes?

A

Wood

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17
Q

The sub-flooring of a typical residential house in the united states is normally made of which ff msterials?

A

Wood

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18
Q

Most common screwdriver

A

philips - crosshead
Flathead - slotted screwdriver

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19
Q

A spring is most likely to be used of which ff?

A

POGO STICK

20
Q

An elevator uses which type of mechanical devices?

A

ALL OF THE ABOVE

21
Q

An elevator uses which type of mechanical devices?

A

ALL OF THE ABOVE

22
Q

What commin mechanical device typically used on a push button such as push bottons on telephones,computer keyboard, etc?

23
Q

What type of gauge use units of psi (pounds per square inch)

A

PRESSURE GAUGE

24
Q

What type of gauge use units of psi (pounds per square inch)

A

PRESSURE GAUGE

25
Engine overheating can be caused by which of the ff?
FAULTY THERMOSTAT
26
Picture
Hammer na may claw
27
75/2
35.5
28
If gears are touching(meshed) then adjacent gears move in opposite directions
Odd numbers of meshed gears will always turn in the same direction as the 1st one
29
Piece of metal that can be extended or compressed by external force but returns to original legnth
Spring
30
SPRING: TENSION VS COMPRESSION
Tension: pulls the springs ends away from each other Compression: pushes the springs end into each other
31
Spring in series VS spring in parallel
Spring series: springs connected after one another Parallel: speings are side by side
32
Will both types of spring have the same compressed distance?
YES
33
If the next gear is bigger, it will be slower(divided by 2) If smaller then x2
.
34
If the next gear is bigger, it will be slower(divided by 2) If smaller then x2
.
35
Which of the following is not considered as a unit of density? A. Kg/m^3 B. mg/mm^3 C. lb/in ^2 E. lb/ft^3
C.
36
Whats the 1st law of thermodynamics
Energy cannot be created nor destroyed
37
If you are task to modify the geometricsl propertises of a cross section, which of the following sets of properties would you consider?
Area, position of center of gravity, mass, axial moment of inertia, limit force
38
It is the property of material that allows it to deform or be able to be made into thin wires
Ductility
39
Elastic modulus is one of the principle properties used in engineering cslculations
It helps to calculate strain if stress in unknown
40
Property of material that is responsible for the deformation in size and shape even after the load stops acting on it
Plasticity
41
It is a cylindrical machine used to transfer rotary motion and power from a driver to a driven element
Shaft
42
The bouyant force is always acting at the ____ of the submerged volume
Centroid
43
3 laws of newton
1. First Law of Motion (Law of Inertia) Statement: An object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity, unless acted upon by an external force. Explanation: This law describes inertia, which is the resistance of an object to any change in its state of motion. If no force is applied to an object, it will not change its velocity (either speed or direction). Example in Maritime: A ship that is floating in the water will continue to float and move at a constant speed unless forces like wind, current, or engine power act upon it. Similarly, when the engines are turned off, the ship will eventually slow down and stop due to the forces of friction and resistance in the water. 2. Second Law of Motion (Law of Acceleration) Statement: The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to the object's mass. This is mathematically expressed as: F=ma Explanation: This law quantifies how the velocity of an object changes when a force is applied. The larger the force, the greater the acceleration; the larger the mass, the less the acceleration for the same force. Example in Maritime: When a ship's engine generates more thrust (force), the ship will accelerate faster. However, if the ship is heavily loaded, its mass increases, and it requires more force to achieve the same acceleration. 3. Third Law of Motion (Action and Reaction) Statement: For every action, there is an equal and opposite reaction. Explanation: This law means that when one object exerts a force on another object, the second object exerts a force of the same magnitude but in the opposite direction. This explains how interactions between objects always involve paired forces. Example in Maritime: When a ship’s propeller pushes water backward (action), the water pushes the ship forward (reaction). This is the principle behind how ships move through the water. Together, Newton’s laws provide a comprehensive understanding of the forces and motion that are critical in designing and operating ships, engines, and other mechanical systems. They explain everything from why a stationary object doesn't move to how a ship accelerates or maintains speed when subjected to various forces. You said: Summerise it ChatGPT said: ChatGPT Newton's Three Laws of Motion are fundamental principles in physics: First Law (Inertia): An object will stay at rest or in uniform motion unless acted upon by an external force. For example, a ship continues moving until forces like friction or engine power change its motion. Second Law (Acceleration): The acceleration of an object depends on the force applied and its mass, expressed as F = m a F=ma. A ship accelerates more with stronger engine force or less mass. Third Law (Action and Reaction): For every action, there is an equal and opposite reaction. For instance, a ship’s propeller pushes water backward, and the water pushes the ship forward.
44
3 Types of Levers
A fulcrum is the pivot or support point on which a lever turns or balances. It’s a critical part of a lever system, which includes three main elements: the fulcrum, the load (the object to be moved), and the effort (the force applied to move the load). Key Points About Fulcrums: Types of Levers: The fulcrum’s position relative to the load and effort determines the type of lever: First-Class Lever: The fulcrum is between the load and the effort, like a seesaw. This type can increase force or change the direction of force. Second-Class Lever: The load is between the fulcrum and effort, like a wheelbarrow. This setup provides a mechanical advantage, reducing the effort needed to lift the load. Third-Class Lever: The effort is between the fulcrum and load, like a pair of tweezers. This type allows greater control but requires more effort.
45
How to use venier calipers
Ad 10mm if theres main scale

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