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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. Maximum bending moments X distance to natural axis/ second moment of area
thermoplastic rubbers
bending stress
closed die forging
VR
2. Vertical
sin
Radio antenna length
malleable cast iron
closed die forging
3. Results from the changing anode and cathode regions over the entire surface
Tempering
Attenuation
n
Uniform attack
4. 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
forging
bending stress
extrusion
Dye penetration test
5. When upper die is dropped on bottom
nickel alloy
open die forging
Attenuation
drop forging
6. 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.
n
Dry corrosion
Twisted pair cable
extrusion
7. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
ultra- high carbon steel
Brushes
Attenuation
8. An orbit less than 1 -500 km. above the Earth's surface.
hot rolling
Impressed current
Bernoulli's principle low speed
Low earth orbit
9. Hard - strong
Tempered Glass
Annealing
if 100% efficient
pearlite
10. Good toughness and fatigue. high strength structures
rectifier
thermosetting polymers
nickel alloy
wet corrosion/electrochemical corrosion
11. Supply current to the rotating commutator from an external source
stress corrosion
open die forging
Brushes
Transistor
12. 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
Laminated glass
Commutator
Sacrifical anode
hot rolling
13. Low pressure
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14. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
thermoplastic rubbers
white cast iron
high carbon steel
thermosetting polymers
15. 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
elastomers=what
Annealing
Laminated glass
Transistor
16. Resulting from combined effect of stresses set up within the metal
stress corrosion
thermoplastic rubbers
Annealing
sin
17. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Attenuation
Hardening
medium carbon steel
Mobiles
18. AC to DC
Normalising
rectifier
High frequency
Bernoulli's principle low speed
19. Load/effort
MA
Transistor
fibre optic cable
nickel alloy
20. 10MHZ
Impressed current
thermoplastic rubbers
Dry corrosion
FM
21. High pressure
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22. Soft - ductile
thermosoftening polymer
Amplitude modulation
ferrite
Transistor
23. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
cos
VR
Magnetic inspection
24. 1GHZ
Twisted pair cable
n%
mild steel
Mobiles
25. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
thermosoftening polymer
Low earth orbit
Attenuation
FM
26. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
Radio antenna length
elastomers=what
bending stress
27. 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
Geosynchronous orbit
cos
thermosetting polymers
bending stress
28. Better properties that would come from machining
forging properties
VR
bending stress
ultra- high carbon steel
29. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Sacrifical anode
FM
Concrete
spalling concrete
30. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Ultrasonic inspection
Bandwidth
ferrite
open die forging
31. X<1% silicon no graphite - has carbon/carbide. very brittle
cold rolling
white cast iron
sin
high carbon steel
32. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
medium carbon steel
cold rolling
High frequency
33. 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
MA
VR
Sacrifical anode
AC motor
34. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Potential energy
MA
thermosoftening polymer
drop forging
35. Elongation of grain flow in direction of rolling
sin
hot rolling
if 100% efficient
rectifier
36. Ma/vr
Radiography
n
elastomers=what
Commutator
37. 1/2Xmass X velocity X velocity
Amplitude modulation
DC motor
Kinetic energy
Medium earth orbit
38. MA=VR
tungsten alloy
AC motor
if 100% efficient
Magnetic inspection
39. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
Annealing
bending stress
mild steel
stress corrosion
40. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
elastomers=what
Hardening
open die forging
Attenuation
41. These have weaker secondary bonds which allow the stretching
Potential energy
ferrite
thermoplastic rubbers
Fluorescent test
42. A cable made of optical fibers that can transmit large amounts of information at the speed of light
cementite
fibre optic cable
stress corrosion
Tempered Glass
43. The greater the sulphur the harder the rubber to stretch
open die forging
Radiography
MA
thermoset rubbers
44. Load/area
stress
Frequency modulation
Strain
if 100% efficient
45. Resulting from exposure to damp environments and liquids.
Low earth orbit
wet corrosion/electrochemical corrosion
Low carbon steel
fibre optic cable
46. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
stress
Kinetic energy
cementite
47. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Tempered Glass
VR
Magnetic inspection
drop forging
48. 100GHZ+
Satellite
Magnetic inspection
Sacrifical anode
cementite
49. Rubbers
wet corrosion/electrochemical corrosion
hot rolling
elastomers=what
Tempered Glass
50. The quantity of information that can be transmitted through a communication medium in a given amount of time.
open die forging
Uniform attack
AC motor
Bandwidth
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