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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. A method of transmitting signals by changing the amplitude of a waves
forging
Amplitude modulation
thermosoftening polymer
forging properties
2. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
bending stress
elastomers=what
Radiography
Ultrasonic inspection
3. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
Twisted pair cable
Laminated glass
Sacrifical anode
elastomers=what
4. 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
Transistor
stress corrosion
Dye penetration test
n%
5. Produces; harder - stronger and less ductile product
spalling concrete
cold rolling
forging
medium carbon steel
6. These have weaker secondary bonds which allow the stretching
cold rolling
AM
thermoplastic rubbers
n
7. Ma/vr x 100/1
mild steel
Ultrasonic inspection
n%
Dry corrosion
8. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Dry corrosion
Bernoulli's principle high speed
mild steel
wet corrosion/electrochemical corrosion
9. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Impressed current
Ultrasonic inspection
Sacrifical anode
Radiography
10. 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
FM
stress
Fluorescent test
tungsten alloy
11. Allows for another signal to be sent along the carrier signal
high carbon steel
malleable cast iron
modulation
pearlite
12. Resulting from combined effect of stresses set up within the metal
mild steel
Fluorescent test
stress corrosion
Tempered Glass
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
cementite
mild steel
AC motor
MA
14. 1/2Xmass X velocity X velocity
Bernoulli's principle high speed
AC motor
Satellite
Kinetic energy
15. Squeezing of the hot metal between two shaped dies excess is cut off
closed die forging
sin
Kinetic energy
spalling concrete
16. Load/area
stress
closed die forging
thermosoftening polymer
hot rolling
17. Good toughness and fatigue. high strength structures
Strain
Attenuation
nickel alloy
Hardening
18. Hard - brittle
medium carbon steel
nodular graphite cast iron
cementite
fibre optic cable
19. Supply current to the rotating commutator from an external source
bending stress
nodular graphite cast iron
Brushes
Transistor
20. 100khz
Bernoulli's principle high speed
AM
Impressed current
Hardening
21. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Radio antenna length
elastomers=what
Bandwidth
Medium earth orbit
22. Resulting from exposure to damp environments and liquids.
Bernoulli's principle low speed
wet corrosion/electrochemical corrosion
medium carbon steel
thermoset rubbers
23. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
Twisted pair cable
Bernoulli's principle high speed
MA
24. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
Dry corrosion
Tempering
high carbon steel
AM
25. Difference/original
Uniform attack
Strain
Radiography
Bernoulli's principle high speed
26. Rubbers
cos
AC motor
elastomers=what
MA
27. Results from the changing anode and cathode regions over the entire surface
Uniform attack
Mobiles
n%
Amplitude modulation
28. Horizontal
cos
cold rolling
mild steel
FM
29. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Frequency modulation
Transistor
grey cast iron
Hardening
30. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
AC motor
Brushes
open die forging
Tempered Glass
31. Vertical
forging properties
AC motor
Geosynchronous orbit
sin
32. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Low carbon steel
Radiography
Dry corrosion
Brushes
33. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
extrusion
Twisted pair cable
thermosetting polymers
malleable cast iron
34. The greater the sulphur the harder the rubber to stretch
nodular graphite cast iron
Mobiles
thermoset rubbers
Kinetic energy
35. 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.
wet corrosion/electrochemical corrosion
Radiography
thermoplastic rubbers
Twisted pair cable
36. Good wear - case hardening. ball bearings
Hardening
chromium alloy
Transistor
pearlite
37. Load/effort
nodular graphite cast iron
MA
Kinetic energy
if 100% efficient
38. Mass X gravity X height
shear stress
Amplitude modulation
Potential energy
extrusion
39. Usually used together - strengthening and toughness
drop forging
Normalising
manganese and silicon alloy
Potential energy
40. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
DC motor
sin
manganese and silicon alloy
41. 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
Strain
fibre optic cable
medium carbon steel
Annealing
42. X<1% silicon no graphite - has carbon/carbide. very brittle
malleable cast iron
white cast iron
Laminated glass
Attenuation
43. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Radiography
fibre optic cable
Transistor
nodular graphite cast iron
44. 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
Strain
Geosynchronous orbit
forging
thermosoftening polymer
45. Field winding parallel to armature winding. Bad for direct coupling
Satellite
Hardening
DC motor
medium carbon steel
46. Solid at room temp - weak secondary bonds. can be reheated multiply times.
chromium alloy
mild steel
modulation
thermosoftening polymer
47. 100GHZ+
Ultrasonic inspection
Radio antenna length
Tempered Glass
Satellite
48. Soft - ductile
ferrite
mild steel
thermoplastic rubbers
VR
49. When upper die is dropped on bottom
drop forging
Tempering
forging
Dry corrosion
50. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Attenuation
rectifier
Kinetic energy
mild steel
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