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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. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Twisted pair cable
medium carbon steel
nickel alloy
thermosetting polymers
2. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Potential energy
Amplitude modulation
Magnetic inspection
Low carbon steel
3. 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
cos
AC motor
High frequency
tungsten alloy
4. Difference/original
Bernoulli's principle low speed
white cast iron
medium carbon steel
Strain
5. A cable made of optical fibers that can transmit large amounts of information at the speed of light
fibre optic cable
Attenuation
thermoplastic rubbers
Dye penetration test
6. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Dry corrosion
Uniform attack
ultra- high carbon steel
tungsten alloy
7. An orbit less than 1 -500 km. above the Earth's surface.
Low earth orbit
Attenuation
stress
Sacrifical anode
8. Mass X gravity X height
cementite
Bernoulli's principle high speed
Uniform attack
Potential energy
9. Soaked cast iron at 870c for long time then cooled slow
medium carbon steel
thermosoftening polymer
malleable cast iron
if 100% efficient
10. Horizontal
n%
Brushes
open die forging
cos
11. Can be reflected of the ionosphere - 3 to 30 megahertz
DC motor
fibre optic cable
High frequency
Radio antenna length
12. A method of transmitting signals by changing the frequency of a wave
Geosynchronous orbit
closed die forging
open die forging
Frequency modulation
13. 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
Annealing
thermosetting polymers
Laminated glass
14. Produces; harder - stronger and less ductile product
cold rolling
hot rolling
Potential energy
High frequency
15. Ma/vr x 100/1
Tempered Glass
spalling concrete
n%
Kinetic energy
16. Soft - ductile
fibre optic cable
ferrite
forging properties
chromium alloy
17. Good wear - case hardening. ball bearings
Normalising
chromium alloy
drop forging
Radio antenna length
18. Supply current to the rotating commutator from an external source
AM
Dry corrosion
mild steel
Brushes
19. A strong hard building material composed of sand and gravel and cement and water
AM
Concrete
Bernoulli's principle low speed
Laminated glass
20. Between 2000-35 -700km above the earth's surface.
Medium earth orbit
AM
Low carbon steel
rectifier
21. Low pressure
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22. Area parallel to force
Mobiles
shear stress
Tempered Glass
Transistor
23. Hard - strong
pearlite
shear stress
hot rolling
Medium earth orbit
24. 100khz
Amplitude modulation
Twisted pair cable
AM
n
25. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Frequency modulation
sin
nodular graphite cast iron
nickel alloy
26. High pressure
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27. Vertical
cos
sin
spalling concrete
chromium alloy
28. 100GHZ+
Tempered Glass
malleable cast iron
Satellite
thermosoftening polymer
29. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
DC motor
open die forging
if 100% efficient
thermosetting polymers
30. 10MHZ
manganese and silicon alloy
Laminated glass
FM
Normalising
31. Usually used together - strengthening and toughness
Annealing
Potential energy
manganese and silicon alloy
Dry corrosion
32. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
FM
High frequency
modulation
33. Results from the changing anode and cathode regions over the entire surface
Uniform attack
Fluorescent test
thermoset rubbers
Bernoulli's principle low speed
34. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
stress
thermosetting polymers
Normalising
Impressed current
35. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
drop forging
thermoset rubbers
Hardening
Radiography
36. 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
Tempering
Sacrifical anode
forging properties
Low carbon steel
37. MA=VR
Twisted pair cable
Radio antenna length
medium carbon steel
if 100% efficient
38. Maximum bending moments X distance to natural axis/ second moment of area
n%
Tempered Glass
ultra- high carbon steel
bending stress
39. Good high temp wear - tools
malleable cast iron
Bernoulli's principle high speed
tungsten alloy
DC motor
40. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
Fluorescent test
Bandwidth
Transistor
41. 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
extrusion
Radio antenna length
Transistor
42. 1/2Xmass X velocity X velocity
Kinetic energy
Geosynchronous orbit
white cast iron
Fluorescent test
43. 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
High frequency
Fluorescent test
open die forging
white cast iron
44. Area load piston/area of effort piston
ferrite
Strain
rectifier
VR
45. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Bandwidth
FM
AC motor
Hardening
46. These have weaker secondary bonds which allow the stretching
Uniform attack
Low earth orbit
thermoplastic rubbers
medium carbon steel
47. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
shear stress
mild steel
forging properties
Potential energy
48. Elongation of grain flow in direction of rolling
Amplitude modulation
hot rolling
manganese and silicon alloy
Dry corrosion
49. Rubbers
drop forging
Commutator
manganese and silicon alloy
elastomers=what
50. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
thermosetting polymers
pearlite
cementite