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Test your basic knowledge |
Engineering Studies
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Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Bernoulli's principle high speed
Ultrasonic inspection
DC motor
Concrete
2. The greater the sulphur the harder the rubber to stretch
Radiography
thermoset rubbers
Frequency modulation
Tempered Glass
3. Between 2000-35 -700km above the earth's surface.
drop forging
Amplitude modulation
AC motor
Medium earth orbit
4. MA=VR
if 100% efficient
Frequency modulation
thermosoftening polymer
Concrete
5. Used where scarifical anodes cannot supply enough protection - offshore oil rigs - buried pipes - big things. protection is provided by connecting a rectifier to provide a direct current source between the anode and the metal being protected.
Impressed current
Bernoulli's principle high speed
Geosynchronous orbit
Low earth orbit
6. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
ultra- high carbon steel
manganese and silicon alloy
ferrite
7. A cable made of optical fibers that can transmit large amounts of information at the speed of light
MA
ultra- high carbon steel
fibre optic cable
Fluorescent test
8. 1/2Xmass X velocity X velocity
grey cast iron
Kinetic energy
white cast iron
Bernoulli's principle high speed
9. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Frequency modulation
Normalising
Tempering
Sacrifical anode
10. Load/area
Bernoulli's principle low speed
Tempered Glass
stress
MA
11. Better properties that would come from machining
thermoset rubbers
Uniform attack
stress corrosion
forging properties
12. Results from the changing anode and cathode regions over the entire surface
Dye penetration test
ultra- high carbon steel
Radio antenna length
Uniform attack
13. Difference/original
Strain
AM
Tempered Glass
Tempering
14. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Amplitude modulation
Low carbon steel
MA
Satellite
15. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Magnetic inspection
Dry corrosion
modulation
thermoset rubbers
16. 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
sin
thermosoftening polymer
Dry corrosion
Geosynchronous orbit
17. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Tempering
extrusion
Attenuation
fibre optic cable
18. Allows for another signal to be sent along the carrier signal
if 100% efficient
thermosetting polymers
cold rolling
modulation
19. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Bernoulli's principle low speed
modulation
Tempered Glass
grey cast iron
20. Low pressure
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21. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
hot rolling
Laminated glass
Dry corrosion
Geosynchronous orbit
22. 100khz
wet corrosion/electrochemical corrosion
AM
nodular graphite cast iron
sin
23. These have weaker secondary bonds which allow the stretching
cementite
Fluorescent test
Concrete
thermoplastic rubbers
24. 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
Fluorescent test
Frequency modulation
Hardening
thermosoftening polymer
25. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
thermosetting polymers
Normalising
malleable cast iron
Satellite
26. Rubbers
Normalising
Satellite
elastomers=what
n
27. 1/4 of the wavelength (higher better)
Low earth orbit
Radio antenna length
Hardening
Potential energy
28. Us a metal that is more reactive. It is connect to another metal and corrodes instead of the other metal. the Anode is replaced periodically
rectifier
High frequency
stress corrosion
Sacrifical anode
29. Area load piston/area of effort piston
DC motor
malleable cast iron
VR
Amplitude modulation
30. AC to DC
Twisted pair cable
extrusion
rectifier
sin
31. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
Low carbon steel
Magnetic inspection
cementite
32. A method of transmitting signals by changing the frequency of a wave
Attenuation
Frequency modulation
VR
High frequency
33. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Bandwidth
wet corrosion/electrochemical corrosion
stress
Low carbon steel
34. X<1% silicon no graphite - has carbon/carbide. very brittle
stress
modulation
thermoset rubbers
white cast iron
35. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
AM
medium carbon steel
open die forging
nodular graphite cast iron
36. Forming of metal by compressive force above recrystallization point.
AC motor
elastomers=what
rectifier
forging
37. Can be reflected of the ionosphere - 3 to 30 megahertz
Strain
High frequency
elastomers=what
Medium earth orbit
38. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Low earth orbit
Tempered Glass
Bernoulli's principle low speed
fibre optic cable
39. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Strain
tungsten alloy
rectifier
spalling concrete
40. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Laminated glass
shear stress
Brushes
thermosetting polymers
41. 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
cementite
tungsten alloy
Dye penetration test
Concrete
42. Area parallel to force
shear stress
Bernoulli's principle high speed
bending stress
Laminated glass
43. Good high temp wear - tools
extrusion
tungsten alloy
Uniform attack
Radio antenna length
44. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
medium carbon steel
Mobiles
Laminated glass
Transistor
45. Good wear - case hardening. ball bearings
n
chromium alloy
cold rolling
Dye penetration test
46. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Fluorescent test
DC motor
cementite
open die forging
47. Vertical
sin
Commutator
if 100% efficient
pearlite
48. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Mobiles
AM
Radiography
Attenuation
49. Squeezing of the hot metal between two shaped dies excess is cut off
Concrete
closed die forging
medium carbon steel
cold rolling
50. 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
Commutator
Concrete
Frequency modulation
spalling concrete
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