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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. 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
Sacrifical anode
Mobiles
cold rolling
Bernoulli's principle low speed
2. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Magnetic inspection
mild steel
cos
n%
3. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Amplitude modulation
Impressed current
Radiography
thermoset rubbers
4. A method of transmitting signals by changing the amplitude of a waves
Brushes
if 100% efficient
Amplitude modulation
Radiography
5. Ma/vr x 100/1
Radio antenna length
VR
n%
Transistor
6. A method of transmitting signals by changing the frequency of a wave
wet corrosion/electrochemical corrosion
Kinetic energy
Frequency modulation
Potential energy
7. High pressure
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8. Better properties that would come from machining
forging properties
modulation
elastomers=what
FM
9. Squeezing of the hot metal between two shaped dies excess is cut off
cold rolling
Laminated glass
VR
closed die forging
10. Good high temp wear - tools
cementite
mild steel
Low earth orbit
tungsten alloy
11. Usually used together - strengthening and toughness
chromium alloy
cementite
ferrite
manganese and silicon alloy
12. 100khz
Tempering
Radio antenna length
AM
Ultrasonic inspection
13. 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
thermosetting polymers
white cast iron
Frequency modulation
AC motor
14. 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.
DC motor
thermosoftening polymer
Impressed current
Uniform attack
15. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
spalling concrete
elastomers=what
Low earth orbit
Transistor
16. Softening a material such as metal by controlled heating and cooling. This makes the metal less brittle and more easily adaptable. Soaking till austenite then cooling slowly. large grains
modulation
n%
Annealing
Dry corrosion
17. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
sin
Radio antenna length
DC motor
18. An orbit less than 1 -500 km. above the Earth's surface.
Transistor
Bandwidth
Low earth orbit
Commutator
19. Resulting from exposure to damp environments and liquids.
thermoplastic rubbers
wet corrosion/electrochemical corrosion
Bernoulli's principle high speed
thermosetting polymers
20. 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
n%
Dye penetration test
Hardening
Ultrasonic inspection
21. Elongation of grain flow in direction of rolling
hot rolling
n
Attenuation
DC motor
22. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Tempered Glass
high carbon steel
n%
Bandwidth
23. Produces; harder - stronger and less ductile product
cold rolling
Radio antenna length
nickel alloy
bending stress
24. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Mobiles
Low carbon steel
spalling concrete
wet corrosion/electrochemical corrosion
25. Rubbers
cold rolling
elastomers=what
FM
wet corrosion/electrochemical corrosion
26. Resulting from combined effect of stresses set up within the metal
hot rolling
stress corrosion
thermosetting polymers
rectifier
27. A flexible communications cable that contains pairs of insulated copper wires that are twisted together for reduction of EMI and RFI and covered with an outer insulating jacket.
AC motor
Tempering
chromium alloy
Twisted pair cable
28. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Strain
Ultrasonic inspection
stress
thermosetting polymers
29. MA=VR
Low earth orbit
Bandwidth
n%
if 100% efficient
30. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Annealing
AM
Geosynchronous orbit
Normalising
31. Low pressure
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32. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Hardening
n
Concrete
thermoplastic rubbers
33. Soft - ductile
FM
ferrite
sin
Dry corrosion
34. Maximum bending moments X distance to natural axis/ second moment of area
bending stress
Tempering
Sacrifical anode
stress corrosion
35. 10MHZ
nickel alloy
FM
white cast iron
thermoplastic rubbers
36. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Annealing
forging properties
cos
fibre optic cable
37. Horizontal
Tempering
mild steel
cos
Low carbon steel
38. 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
wet corrosion/electrochemical corrosion
Low carbon steel
medium carbon steel
39. These have weaker secondary bonds which allow the stretching
modulation
Tempered Glass
thermoplastic rubbers
cold rolling
40. The greater the sulphur the harder the rubber to stretch
Low earth orbit
DC motor
Annealing
thermoset rubbers
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 Fluorescent light is turned on to expose any left over - I.e in the cracks
Fluorescent test
chromium alloy
High frequency
fibre optic cable
42. Area load piston/area of effort piston
VR
Bandwidth
MA
Satellite
43. Good wear - case hardening. ball bearings
spalling concrete
Laminated glass
stress corrosion
chromium alloy
44. Forming of metal by compressive force above recrystallization point.
open die forging
forging
chromium alloy
n%
45. A strong hard building material composed of sand and gravel and cement and water
Radiography
ultra- high carbon steel
Concrete
DC motor
46. Soaked cast iron at 870c for long time then cooled slow
Concrete
high carbon steel
malleable cast iron
forging
47. Vertical
rectifier
Bernoulli's principle high speed
white cast iron
sin
48. Difference/original
mild steel
spalling concrete
n
Strain
49. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Attenuation
Laminated glass
Medium earth orbit
if 100% efficient
50. 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
Impressed current
Transistor
stress
Uniform attack