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Test your basic knowledge |
Engineering Studies
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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. MA=VR
malleable cast iron
cold rolling
Twisted pair cable
if 100% efficient
2. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
elastomers=what
thermoplastic rubbers
extrusion
Dry corrosion
3. When upper die is dropped on bottom
Low carbon steel
drop forging
bending stress
forging properties
4. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Tempered Glass
AM
Frequency modulation
wet corrosion/electrochemical corrosion
5. Allows for another signal to be sent along the carrier signal
Impressed current
thermoplastic rubbers
rectifier
modulation
6. Ma/vr x 100/1
Brushes
n%
high carbon steel
Fluorescent test
7. 1/4 of the wavelength (higher better)
thermosetting polymers
Radio antenna length
Twisted pair cable
wet corrosion/electrochemical corrosion
8. Maximum bending moments X distance to natural axis/ second moment of area
Sacrifical anode
bending stress
AM
Strain
9. The greater the sulphur the harder the rubber to stretch
Concrete
thermoset rubbers
FM
tungsten alloy
10. 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.
Uniform attack
Twisted pair cable
Dry corrosion
Bernoulli's principle high speed
11. Difference/original
Strain
High frequency
Geosynchronous orbit
nickel alloy
12. Hard - strong
mild steel
open die forging
pearlite
n
13. 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
VR
cold rolling
Geosynchronous orbit
Bernoulli's principle high speed
14. Elongation of grain flow in direction of rolling
high carbon steel
Attenuation
Geosynchronous orbit
hot rolling
15. Solid at room temp - weak secondary bonds. can be reheated multiply times.
grey cast iron
thermoset rubbers
thermosoftening polymer
tungsten alloy
16. Squeezing of the hot metal between two shaped dies excess is cut off
thermoplastic rubbers
Uniform attack
Tempered Glass
closed die forging
17. Area parallel to force
shear stress
medium carbon steel
AC motor
Attenuation
18. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
thermoset rubbers
closed die forging
pearlite
19. Field winding parallel to armature winding. Bad for direct coupling
DC motor
Radio antenna length
medium carbon steel
open die forging
20. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Magnetic inspection
open die forging
Tempered Glass
medium carbon steel
21. A method of transmitting signals by changing the frequency of a wave
AM
Mobiles
Frequency modulation
Medium earth orbit
22. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
Kinetic energy
Bernoulli's principle low speed
shear stress
23. Soft - ductile
ferrite
Frequency modulation
sin
if 100% efficient
24. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
thermosoftening polymer
Strain
open die forging
25. Between 2000-35 -700km above the earth's surface.
bending stress
Medium earth orbit
thermosetting polymers
Normalising
26. Usually used together - strengthening and toughness
Brushes
manganese and silicon alloy
Low earth orbit
Dry corrosion
27. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
nodular graphite cast iron
cementite
ferrite
if 100% efficient
28. Forming of metal by compressive force above recrystallization point.
stress
extrusion
forging
Frequency modulation
29. 10MHZ
Radio antenna length
nodular graphite cast iron
Geosynchronous orbit
FM
30. Load/area
Fluorescent test
stress
Attenuation
Mobiles
31. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Hardening
Laminated glass
hot rolling
sin
32. 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
thermosoftening polymer
Transistor
Ultrasonic inspection
Low earth orbit
33. A method of transmitting signals by changing the amplitude of a waves
bending stress
Medium earth orbit
Kinetic energy
Amplitude modulation
34. 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
AC motor
bending stress
cos
Amplitude modulation
35. 1%<X<2% carbon. more cementite - used for files
pearlite
rectifier
shear stress
ultra- high carbon steel
36. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
Brushes
Low carbon steel
Amplitude modulation
37. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
thermoset rubbers
medium carbon steel
Mobiles
Amplitude modulation
38. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Attenuation
Frequency modulation
Bandwidth
n%
39. Mass X gravity X height
Potential energy
DC motor
Dye penetration test
cos
40. Vertical
sin
fibre optic cable
Geosynchronous orbit
Amplitude modulation
41. Ma/vr
high carbon steel
forging properties
n
fibre optic cable
42. 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
shear stress
nickel alloy
Dye penetration test
rectifier
43. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Brushes
Radio antenna length
Impressed current
fibre optic cable
44. Supply current to the rotating commutator from an external source
white cast iron
Brushes
stress
Mobiles
45. Soaked cast iron at 870c for long time then cooled slow
Dye penetration test
malleable cast iron
Kinetic energy
Impressed current
46. Results from the changing anode and cathode regions over the entire surface
stress
Bernoulli's principle high speed
Uniform attack
stress corrosion
47. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
rectifier
High frequency
Commutator
Tempering
48. AC to DC
Radiography
rectifier
Bernoulli's principle high speed
Twisted pair cable
49. 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
sin
Tempered Glass
Annealing
Mobiles
50. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
fibre optic cable
Transistor
High frequency
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