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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. Used where scarifical anodes cannot supply enough protection - offshore oil rigs - buried pipes - big things. protection is provided by connecting a rectifier to provide a direct current source between the anode and the metal being protected.
Impressed current
Amplitude modulation
Kinetic energy
wet corrosion/electrochemical corrosion
2. Load/area
n%
AC motor
Kinetic energy
stress
3. Rubbers
Amplitude modulation
Annealing
DC motor
elastomers=what
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
Dye penetration test
shear stress
modulation
Attenuation
5. Ma/vr x 100/1
Kinetic energy
modulation
n%
nodular graphite cast iron
6. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
thermosetting polymers
drop forging
Magnetic inspection
High frequency
7. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
drop forging
MA
fibre optic cable
Tempering
8. Good wear - case hardening. ball bearings
cos
chromium alloy
Sacrifical anode
medium carbon steel
9. Being forced - under pressure - through a hole like toothpaste. either hot or cold
extrusion
nodular graphite cast iron
Fluorescent test
pearlite
10. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Transistor
high carbon steel
white cast iron
spalling concrete
11. 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
manganese and silicon alloy
High frequency
Transistor
FM
12. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Annealing
pearlite
Transistor
Hardening
13. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
thermoset rubbers
drop forging
Mobiles
14. Low pressure
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15. Produces; harder - stronger and less ductile product
cold rolling
Mobiles
thermosoftening polymer
VR
16. 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
Tempering
open die forging
AM
AC motor
17. Load/effort
Normalising
medium carbon steel
elastomers=what
MA
18. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Tempering
modulation
medium carbon steel
Satellite
19. Vertical
Dry corrosion
Bernoulli's principle high speed
sin
spalling concrete
20. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
FM
Radiography
nickel alloy
Ultrasonic inspection
21. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Bandwidth
white cast iron
AM
pearlite
22. AC to DC
rectifier
MA
thermoset rubbers
Low carbon steel
23. When upper die is dropped on bottom
drop forging
Low carbon steel
ferrite
Low earth orbit
24. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
medium carbon steel
cold rolling
Magnetic inspection
mild steel
25. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
shear stress
Low earth orbit
bending stress
26. Horizontal
wet corrosion/electrochemical corrosion
Geosynchronous orbit
Hardening
cos
27. Good high temp wear - tools
tungsten alloy
Sacrifical anode
Low carbon steel
High frequency
28. Allows for another signal to be sent along the carrier signal
modulation
High frequency
Laminated glass
thermosoftening polymer
29. 100GHZ+
drop forging
AC motor
manganese and silicon alloy
Satellite
30. Results from the changing anode and cathode regions over the entire surface
Tempering
thermosetting polymers
Uniform attack
tungsten alloy
31. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
nodular graphite cast iron
Strain
thermosoftening polymer
modulation
32. 10MHZ
FM
white cast iron
Low earth orbit
Strain
33. Solid at room temp - weak secondary bonds. can be reheated multiply times.
malleable cast iron
thermosoftening polymer
Concrete
if 100% efficient
34. Hard - brittle
ferrite
open die forging
cementite
ultra- high carbon steel
35. Soft - ductile
ferrite
manganese and silicon alloy
rectifier
ultra- high carbon steel
36. MA=VR
Ultrasonic inspection
Potential energy
mild steel
if 100% efficient
37. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Low earth orbit
grey cast iron
open die forging
cementite
38. 1%<X<2% carbon. more cementite - used for files
ferrite
mild steel
Frequency modulation
ultra- high carbon steel
39. 1/4 of the wavelength (higher better)
AM
Radio antenna length
n%
cementite
40. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
n
Sacrifical anode
white cast iron
41. Forming of metal by compressive force above recrystallization point.
cold rolling
forging
ultra- high carbon steel
Laminated glass
42. Difference/original
cos
Transistor
Satellite
Strain
43. X<1% silicon no graphite - has carbon/carbide. very brittle
spalling concrete
white cast iron
thermosoftening polymer
pearlite
44. A strong hard building material composed of sand and gravel and cement and water
Hardening
thermoplastic rubbers
Concrete
Low carbon steel
45. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
hot rolling
Dry corrosion
Frequency modulation
manganese and silicon alloy
46. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
wet corrosion/electrochemical corrosion
Laminated glass
Transistor
Annealing
47. 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.
Sacrifical anode
Twisted pair cable
Potential energy
cos
48. 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
tungsten alloy
Sacrifical anode
Radiography
ultra- high carbon steel
49. High pressure
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50. Supply current to the rotating commutator from an external source
Magnetic inspection
grey cast iron
Brushes
VR