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Basic of Mechanical Engineering Flashcards | StudBud
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Basic of Mechanical Engineering
Basic of Mechanical Engineering
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1
Is a heat engine that performs mechanical work
Shuttler
Steam Engine
Migration
Invention
2
What do we use in our homes that makes both heat and mechanical energy?
hand mixer
can opener
candle
hair dryer
3
Global warming affects...
Only ice caps
Only plants
Only animals
Every living on the earth
4
Toys can be made from this material?
Glass
FIbre
Both Plastic and Fibre
Plastic
5
Force is also measured in
Kg
Kgf
Kg F
None of above
6
Which are fossil fuels?
coal
natural gas
oil
All of the above
7
Power is...
the rate at which work is done.
the same as force
measured in Newtons
the same as work
8
Every time you open the refrigerator door, ____% of the cold air escapes.
10%
20%
30%
40%
9
Can we create energy?
No
Yes
10
A watt is a measure of power
True
False
11
The steel is a ferrous material
True
False
12
What is a reciprocating motion?
something that goes upwards
something that moves in a straight line
something that moves in a circular motion
something that goes back and forth or up and down
13
Why are fossil fuels bad?
They pollute the environment
They are hard to find
They make an area look dirty
They are really expensive
14
Solar energy is renewable
True
False
15
Petrol is a...
compound
heterogeneous mixture
homogeneous mixture
element
16
What is Wind Energy?
a process using steam to generate electricity
a process using the sun to generate electricity
a process using wind to generate electricity
a process using water to generate electricity
17
Why is energy important?
it lights up my life (light bulbs)
All of the above
It charges my cell phone
It moves my car
18
What are sources of this type of energy ?
Movement
Geothermal energy, Nuclear energy, etc
Water
Wind
19
What is the mechanical advantage of this pulley system?
1
2
3
4
20
Which letter identifies an axle?
X
Z
Y
W
21
What is the purpose of the ceramic discs in a power transmission line?
To draw lightning to the Earth should it strike.
Gather water when it rains to assist in power transmission.
Draw excess current from the live wires, to prevent surges.
To insulate the live wires from the rest of the structure.
22
What do Mechanical Engineers do?
Design power producing machines such as gas turbines and elevators
Focus on the study of how water reacts in natural and manmade environments
Create the physical construction of a buildings infracstructure
Responsible for the maintenance and inspection of industrial machinery
23
Wind, solar, and hydro (water) energy are examples of what?
None of the above
Non-renewable Energy
Chemical Energy
Renewable Energy
24
what element fuels fission in nuclear reactors?
uranium
helium
hydrogen
carbon
25
What tool do we use to measure temperature?
Ruler
Thermometer
Scale
26
Mechanical Energy is...
Going to need a battery to work.
The primary source of your tablet.
Produced by turning gears to make a device work.
Produced when a light switch is turned on.
27
what is the function of the brakes?
it enables the driving wheels to turn
it slows or stops the car
it enables the engine to work
it carries the weight of the car.
28
Mechanical advantage is force
True
False
29
What causes global warming?
Green House Gases
Water
The Earth
The Sun
30
Which of the following are examples of physical properties?
All of the "above"
The mass of an object, material, or substance.
The weight, height, and strength of an object or material.
How magnetic an object, material, or substance is.
31
What are conductive materials?
through it
Conductivity is the measure of the ability of a material
They don't pass electricity
Electrical conductivity
32
The ability to do work.
power
perseverance
energy
force
33
What is a force?
the powerful effect of something.
strength as an attribute of physical action or movement.
34
heat can be described as
Average kinetic energy of the particles in matter
Total energy of all the particles with a high temperature
Total amount of thermal energy contained in a warm object
energy transferred between objects at different temperatures
35
A car uses a four-stroke engine. The four strokes are:
injection, carburetion, rotation and exhaust
injection, rotation, combustion and exhaust
intake, compression, combustion and exhaust
36
Which one of these materials are
electrical insulators
?
Steel
Copper
Ceramic
Gold
37
Steam engine use kerosene.
False
True
38
Fossil fuels...
natural gas and petroleum
wood and oil
coal and sandstone
oil and limestone
39
What are the mechanical properties?
Mechanicial forces
Deformation
Wetness, Softness, Adhesiveness
Strength, Hardness, Ductility, Stiffness
40
The Zeroth Law claims: If TempA = TempB, and TempB = TempC, then TempA = TempC
True
False
41
The transmission of power between shafts by means of a belt connecting pulleys on the shafts.
Belt and Pulley
Crank and Slider
Cam and Follower
Universal Joint
42
Nuclear power is...
renewable
nonrenewable
43
What is the unit for force?
Kilograms (Kg)
Metres (M)
Newtons (N)
Pascals (Pa)
44
A raw material is...
A raw material is a material taken directly from nature
A raw material is a thing for obteining things
I dont know
To construct new objects
45
Work =
Mass x Distance
Velocity x Mass
Force x Distance
Force x Mass
46
What is the zeroth law of Thermodynamics.
Entropy
Only two bodies can be in equilibrium with themselves
Two bodies are always in equilibrium with a third body.
Equilibrium in more than three bodies.
47
Who invented the heat engine.
Robert Stirling
Jonathan joestar
Hennery lang
Thanos
48
Air conditioning is a system that makes a house hot.
True
False
49
Which of the following are examples of fossil fuels?
Coal, crude oil, cooking oil and natural gas
Crude oil, cooking oil and natural gas only
Crude oil and cooking oil only
Coal, crude oil and natural gas nly
50
An electric fan can reduce the temperature of a room.
True
False
