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Test your basic knowledge |
Engineering Studies
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. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
Radio antenna length
high carbon steel
Mobiles
n
2. Good wear - case hardening. ball bearings
Potential energy
chromium alloy
stress
cold rolling
3. A device that converts the AC inside a DC generator to a DC output or converts a DC supply to an AC inside a DC motor.keeping the armature rotating
VR
Commutator
if 100% efficient
high carbon steel
4. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
closed die forging
shear stress
Dry corrosion
tungsten alloy
5. MA=VR
VR
if 100% efficient
Laminated glass
FM
6. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Uniform attack
Low carbon steel
bending stress
Twisted pair cable
7. 1/4 of the wavelength (higher better)
nickel alloy
open die forging
Strain
Radio antenna length
8. Dye is sprayed onto a surface - with excess being wiped away - meaning any left on the piece would be in cracks that exist in it. A Fluorescent light is turned on to expose any left over - I.e in the cracks
modulation
wet corrosion/electrochemical corrosion
open die forging
Fluorescent test
9. Good toughness and fatigue. high strength structures
Dye penetration test
nickel alloy
Transistor
Amplitude modulation
10. Ma/vr x 100/1
Dry corrosion
Radio antenna length
n%
cos
11. 1GHZ
shear stress
malleable cast iron
medium carbon steel
Mobiles
12. Hard - brittle
tungsten alloy
modulation
Low carbon steel
cementite
13. X<1% silicon no graphite - has carbon/carbide. very brittle
VR
Annealing
Fluorescent test
white cast iron
14. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
AC motor
cementite
Laminated glass
Strain
15. Ma/vr
Low earth orbit
AM
n
bending stress
16. An orbit less than 1 -500 km. above the Earth's surface.
stress
Low earth orbit
Brushes
sin
17. Can be reflected of the ionosphere - 3 to 30 megahertz
drop forging
High frequency
thermoplastic rubbers
Hardening
18. Being forced - under pressure - through a hole like toothpaste. either hot or cold
extrusion
MA
thermosetting polymers
stress
19. Area load piston/area of effort piston
hot rolling
Annealing
FM
VR
20. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Commutator
Fluorescent test
manganese and silicon alloy
grey cast iron
21. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Attenuation
Brushes
thermosoftening polymer
ultra- high carbon steel
22. AC to DC
AC motor
rectifier
tungsten alloy
white cast iron
23. Better properties that would come from machining
Commutator
elastomers=what
rectifier
forging properties
24. These have weaker secondary bonds which allow the stretching
elastomers=what
Bernoulli's principle high speed
DC motor
thermoplastic rubbers
25. Low pressure
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26. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
drop forging
MA
mild steel
Radio antenna length
27. Difference/original
cold rolling
Dye penetration test
Normalising
Strain
28. Produces; harder - stronger and less ductile product
cold rolling
DC motor
elastomers=what
Tempering
29. 100khz
Normalising
tungsten alloy
forging properties
AM
30. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
grey cast iron
ultra- high carbon steel
Bernoulli's principle low speed
Hardening
31. 100GHZ+
Concrete
Satellite
nickel alloy
Radio antenna length
32. 1%<X<2% carbon. more cementite - used for files
shear stress
Tempering
Frequency modulation
ultra- high carbon steel
33. Dye is sprayed onto a surface - with excess being wiped away - meaning any left on the piece would be in cracks that exist in it. A developer is then added to it to expose any left over - I.e in the cracks
Amplitude modulation
Dye penetration test
mild steel
Bernoulli's principle high speed
34. The greater the sulphur the harder the rubber to stretch
forging
High frequency
sin
thermoset rubbers
35. A cable made of optical fibers that can transmit large amounts of information at the speed of light
forging
grey cast iron
pearlite
fibre optic cable
36. An orbit in which a satellite orbits Earth at the same rate as Earth rotates and thus stays over the same place all the time
Low carbon steel
Geosynchronous orbit
medium carbon steel
Satellite
37. Soft - ductile
Magnetic inspection
ferrite
Commutator
n%
38. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
closed die forging
Uniform attack
Magnetic inspection
medium carbon steel
39. Good high temp wear - tools
tungsten alloy
Low carbon steel
wet corrosion/electrochemical corrosion
Tempering
40. Elongation of grain flow in direction of rolling
tungsten alloy
Kinetic energy
hot rolling
thermoplastic rubbers
41. Soaked cast iron at 870c for long time then cooled slow
n%
malleable cast iron
Brushes
cementite
42. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
cementite
Low carbon steel
Potential energy
43. 10MHZ
fibre optic cable
FM
Brushes
Tempered Glass
44. Allows for another signal to be sent along the carrier signal
tungsten alloy
modulation
Amplitude modulation
sin
45. Maximum bending moments X distance to natural axis/ second moment of area
shear stress
rectifier
thermosoftening polymer
bending stress
46. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
mild steel
DC motor
spalling concrete
Bernoulli's principle high speed
47. High pressure
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48. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Bandwidth
DC motor
white cast iron
MA
49. Rubbers
cementite
Geosynchronous orbit
rectifier
elastomers=what
50. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
ultra- high carbon steel
high carbon steel
closed die forging
Normalising