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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.
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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. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
mild steel
chromium alloy
Uniform attack
2. Rubbers
pearlite
Dye penetration test
elastomers=what
nodular graphite cast iron
3. Soft - ductile
ferrite
thermoset rubbers
Satellite
Strain
4. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
pearlite
FM
Low carbon steel
5. Better properties that would come from machining
Concrete
Normalising
DC motor
forging properties
6. The greater the sulphur the harder the rubber to stretch
pearlite
Twisted pair cable
thermoset rubbers
Normalising
7. Soaked cast iron at 870c for long time then cooled slow
AC motor
malleable cast iron
Bernoulli's principle low speed
n
8. 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
cold rolling
Annealing
tungsten alloy
cos
9. High pressure
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10. Produces; harder - stronger and less ductile product
VR
cold rolling
pearlite
shear stress
11. Low pressure
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12. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
MA
thermoset rubbers
extrusion
13. Mass X gravity X height
Bernoulli's principle low speed
Normalising
Geosynchronous orbit
Potential energy
14. Maximum bending moments X distance to natural axis/ second moment of area
Kinetic energy
forging properties
open die forging
bending stress
15. 1/2Xmass X velocity X velocity
Fluorescent test
chromium alloy
Kinetic energy
Concrete
16. Results from the changing anode and cathode regions over the entire surface
Uniform attack
Kinetic energy
Bernoulli's principle low speed
hot rolling
17. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
chromium alloy
Tempering
Impressed current
Magnetic inspection
18. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Bernoulli's principle high speed
Magnetic inspection
cementite
chromium alloy
19. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Hardening
Ultrasonic inspection
n
AC motor
20. 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
Uniform attack
thermosoftening polymer
closed die forging
Sacrifical anode
21. AC to DC
MA
open die forging
bending stress
rectifier
22. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Bernoulli's principle low speed
spalling concrete
Normalising
nickel alloy
23. Good wear - case hardening. ball bearings
grey cast iron
mild steel
white cast iron
chromium alloy
24. Usually used together - strengthening and toughness
manganese and silicon alloy
Tempering
modulation
AM
25. Elongation of grain flow in direction of rolling
pearlite
Radiography
hot rolling
shear stress
26. Allows for another signal to be sent along the carrier signal
cos
VR
Uniform attack
modulation
27. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Dry corrosion
Frequency modulation
modulation
thermosoftening polymer
28. Load/effort
Bandwidth
spalling concrete
MA
Satellite
29. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Tempered Glass
Bandwidth
Concrete
forging
30. A strong hard building material composed of sand and gravel and cement and water
Concrete
closed die forging
Fluorescent test
Normalising
31. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Hardening
Annealing
nodular graphite cast iron
shear stress
32. Ma/vr
n
if 100% efficient
Bandwidth
FM
33. Vertical
n
Sacrifical anode
Transistor
sin
34. An orbit less than 1 -500 km. above the Earth's surface.
Brushes
Low earth orbit
Bernoulli's principle high speed
Strain
35. Good toughness and fatigue. high strength structures
Dry corrosion
Ultrasonic inspection
Impressed current
nickel alloy
36. Supply current to the rotating commutator from an external source
Dye penetration test
medium carbon steel
Brushes
forging
37. 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
n
drop forging
wet corrosion/electrochemical corrosion
38. Resulting from combined effect of stresses set up within the metal
n%
stress corrosion
manganese and silicon alloy
Frequency modulation
39. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
medium carbon steel
ultra- high carbon steel
Satellite
AC motor
40. Between 2000-35 -700km above the earth's surface.
Medium earth orbit
chromium alloy
Kinetic energy
wet corrosion/electrochemical corrosion
41. Area load piston/area of effort piston
malleable cast iron
Frequency modulation
Commutator
VR
42. 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.
MA
Bernoulli's principle high speed
Twisted pair cable
Annealing
43. A cable made of optical fibers that can transmit large amounts of information at the speed of light
malleable cast iron
nickel alloy
fibre optic cable
FM
44. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Dry corrosion
Mobiles
if 100% efficient
malleable cast iron
45. Can be reflected of the ionosphere - 3 to 30 megahertz
nickel alloy
elastomers=what
Hardening
High frequency
46. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
ferrite
Low earth orbit
Attenuation
47. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
Dye penetration test
mild steel
n
wet corrosion/electrochemical corrosion
48. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
tungsten alloy
stress corrosion
Tempered Glass
AC motor
49. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
elastomers=what
tungsten alloy
Concrete
Hardening
50. 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
sin
chromium alloy
Dye penetration test
thermoset rubbers
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