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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. Rubbers
Geosynchronous orbit
elastomers=what
Frequency modulation
pearlite
2. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
manganese and silicon alloy
Satellite
Potential energy
3. Hard - strong
pearlite
Strain
FM
high carbon steel
4. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Radio antenna length
VR
nodular graphite cast iron
Attenuation
5. 1GHZ
Low earth orbit
Hardening
Mobiles
thermosetting polymers
6. MA=VR
Tempered Glass
Fluorescent test
if 100% efficient
sin
7. Good toughness and fatigue. high strength structures
ultra- high carbon steel
bending stress
nickel alloy
DC motor
8. A method of transmitting signals by changing the amplitude of a waves
Laminated glass
Radiography
Amplitude modulation
Brushes
9. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
n%
tungsten alloy
Potential energy
Laminated glass
10. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
medium carbon steel
Mobiles
manganese and silicon alloy
Transistor
11. 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
thermosoftening polymer
Strain
cementite
12. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
medium carbon steel
Sacrifical anode
closed die forging
spalling concrete
13. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
wet corrosion/electrochemical corrosion
Hardening
Dye penetration test
forging properties
14. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
thermoset rubbers
Geosynchronous orbit
AC motor
nodular graphite cast iron
15. 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
nodular graphite cast iron
high carbon steel
thermoset rubbers
16. 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
Satellite
Dye penetration test
Concrete
chromium alloy
17. Load/area
stress
Twisted pair cable
Geosynchronous orbit
spalling concrete
18. The greater the sulphur the harder the rubber to stretch
cementite
thermoset rubbers
cos
Twisted pair cable
19. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
Geosynchronous orbit
Low earth orbit
Concrete
20. Good high temp wear - tools
tungsten alloy
Potential energy
shear stress
hot rolling
21. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Magnetic inspection
thermosoftening polymer
MA
white cast iron
22. 100GHZ+
Radio antenna length
ultra- high carbon steel
Satellite
Magnetic inspection
23. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Frequency modulation
malleable cast iron
fibre optic cable
chromium alloy
24. Low pressure
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25. Can be reflected of the ionosphere - 3 to 30 megahertz
Tempering
High frequency
MA
bending stress
26. Supply current to the rotating commutator from an external source
Concrete
Satellite
n%
Brushes
27. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
hot rolling
stress corrosion
forging
Magnetic inspection
28. High pressure
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29. Between 2000-35 -700km above the earth's surface.
Tempering
high carbon steel
Medium earth orbit
medium carbon steel
30. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
nickel alloy
Tempered Glass
Low earth orbit
ferrite
31. Horizontal
Magnetic inspection
cos
chromium alloy
Impressed current
32. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
high carbon steel
Radiography
wet corrosion/electrochemical corrosion
AM
33. Ma/vr
n
rectifier
white cast iron
forging
34. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Low carbon steel
Attenuation
cos
thermosetting polymers
35. Squeezing of the hot metal between two shaped dies excess is cut off
Normalising
closed die forging
manganese and silicon alloy
Bernoulli's principle low speed
36. Allows for another signal to be sent along the carrier signal
wet corrosion/electrochemical corrosion
forging properties
modulation
thermoset rubbers
37. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
pearlite
Frequency modulation
Mobiles
38. X<1% silicon no graphite - has carbon/carbide. very brittle
Twisted pair cable
white cast iron
chromium alloy
Dye penetration test
39. Better properties that would come from machining
Magnetic inspection
Commutator
thermoset rubbers
forging properties
40. 1%<X<2% carbon. more cementite - used for files
spalling concrete
nodular graphite cast iron
ultra- high carbon steel
forging properties
41. AC to DC
thermosetting polymers
Normalising
Fluorescent test
rectifier
42. 100khz
thermosoftening polymer
AM
stress
Twisted pair cable
43. Soft - ductile
forging properties
ferrite
Impressed current
manganese and silicon alloy
44. Load/effort
Kinetic energy
Annealing
MA
Twisted pair cable
45. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
manganese and silicon alloy
DC motor
Tempering
fibre optic cable
46. 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.
high carbon steel
if 100% efficient
Twisted pair cable
extrusion
47. Difference/original
shear stress
Low earth orbit
modulation
Strain
48. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
cementite
Tempered Glass
Concrete
49. 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
stress
Low earth orbit
Commutator
chromium alloy
50. A strong hard building material composed of sand and gravel and cement and water
Concrete
elastomers=what
ferrite
Ultrasonic inspection