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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. 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.
nickel alloy
Impressed current
thermoplastic rubbers
Attenuation
2. Horizontal
fibre optic cable
modulation
cos
Frequency modulation
3. 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
Low earth orbit
elastomers=what
tungsten alloy
Dye penetration test
4. A cable made of optical fibers that can transmit large amounts of information at the speed of light
drop forging
fibre optic cable
Brushes
Potential energy
5. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Radio antenna length
Low earth orbit
cos
Tempered Glass
6. Ma/vr x 100/1
chromium alloy
n%
Frequency modulation
Low carbon steel
7. 1/2Xmass X velocity X velocity
fibre optic cable
Amplitude modulation
thermoplastic rubbers
Kinetic energy
8. A motor that is light - rugged and very reliable - runs on ac current and are more common in robotics. Can only run at a certain speed
Amplitude modulation
cos
stress
AC motor
9. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
ultra- high carbon steel
Ultrasonic inspection
Tempering
sin
10. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
nodular graphite cast iron
pearlite
Amplitude modulation
mild steel
11. Good wear - case hardening. ball bearings
Radio antenna length
Attenuation
chromium alloy
ferrite
12. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
pearlite
modulation
Attenuation
medium carbon steel
13. Resulting from exposure to damp environments and liquids.
stress
wet corrosion/electrochemical corrosion
Geosynchronous orbit
Frequency modulation
14. Low pressure
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15. 100khz
Brushes
Kinetic energy
AM
Bandwidth
16. AC to DC
rectifier
High frequency
spalling concrete
elastomers=what
17. Results from the changing anode and cathode regions over the entire surface
sin
manganese and silicon alloy
Uniform attack
high carbon steel
18. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Impressed current
forging properties
bending stress
open die forging
19. A method of transmitting signals by changing the amplitude of a waves
forging properties
n%
Attenuation
Amplitude modulation
20. 1%<X<2% carbon. more cementite - used for files
modulation
ultra- high carbon steel
High frequency
VR
21. A method of transmitting signals by changing the frequency of a wave
Dye penetration test
Frequency modulation
Bandwidth
forging
22. Better properties that would come from machining
forging properties
if 100% efficient
Radio antenna length
Amplitude modulation
23. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
tungsten alloy
grey cast iron
AM
malleable cast iron
24. These have weaker secondary bonds which allow the stretching
Ultrasonic inspection
thermoplastic rubbers
Low earth orbit
Attenuation
25. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
white cast iron
VR
Tempered Glass
high carbon steel
26. Area load piston/area of effort piston
wet corrosion/electrochemical corrosion
VR
chromium alloy
sin
27. Rubbers
white cast iron
Low carbon steel
thermoset rubbers
elastomers=what
28. Solid at room temp - weak secondary bonds. can be reheated multiply times.
thermosoftening polymer
rectifier
wet corrosion/electrochemical corrosion
FM
29. Area parallel to force
spalling concrete
stress corrosion
Uniform attack
shear stress
30. A solid state component made from three layers of semiconductor material that can amplify the strenght of an electric signal or act as an electronic switch
mild steel
Transistor
DC motor
Sacrifical anode
31. MA=VR
VR
Hardening
cementite
if 100% efficient
32. Usually used together - strengthening and toughness
manganese and silicon alloy
Geosynchronous orbit
high carbon steel
Dry corrosion
33. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
stress
Normalising
Low carbon steel
hot rolling
34. Between 2000-35 -700km above the earth's surface.
Kinetic energy
Frequency modulation
Medium earth orbit
Normalising
35. Hard - strong
Amplitude modulation
Low earth orbit
MA
pearlite
36. An orbit less than 1 -500 km. above the Earth's surface.
DC motor
Normalising
nickel alloy
Low earth orbit
37. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
ultra- high carbon steel
chromium alloy
spalling concrete
elastomers=what
38. A strong hard building material composed of sand and gravel and cement and water
drop forging
forging properties
Uniform attack
Concrete
39. Soft - ductile
ferrite
Amplitude modulation
drop forging
Sacrifical anode
40. Supply current to the rotating commutator from an external source
Radiography
Brushes
extrusion
nodular graphite cast iron
41. High pressure
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42. Load/area
modulation
Annealing
stress
n%
43. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
tungsten alloy
Laminated glass
rectifier
n%
44. Produces; harder - stronger and less ductile product
Dye penetration test
cold rolling
Magnetic inspection
Kinetic energy
45. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Laminated glass
Bernoulli's principle low speed
extrusion
Low earth orbit
46. 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
grey cast iron
Transistor
nodular graphite cast iron
Fluorescent test
47. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Bernoulli's principle high speed
Hardening
nodular graphite cast iron
tungsten alloy
48. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
thermoplastic rubbers
Low earth orbit
Ultrasonic inspection
Magnetic inspection
49. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
sin
Tempering
thermosetting polymers
Brushes
50. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Transistor
High frequency
Dye penetration test
Hardening