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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. Hard - brittle
cementite
cold rolling
Frequency modulation
Strain
2. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Brushes
Twisted pair cable
rectifier
Normalising
3. Rubbers
elastomers=what
stress
forging
cold rolling
4. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Magnetic inspection
fibre optic cable
High frequency
Potential energy
5. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Dry corrosion
mild steel
VR
manganese and silicon alloy
6. X<1% silicon no graphite - has carbon/carbide. very brittle
FM
Bandwidth
white cast iron
Fluorescent test
7. Usually used together - strengthening and toughness
manganese and silicon alloy
Potential energy
Kinetic energy
Dry corrosion
8. Good wear - case hardening. ball bearings
chromium alloy
Twisted pair cable
nodular graphite cast iron
elastomers=what
9. 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
Magnetic inspection
Fluorescent test
ferrite
Commutator
10. AC to DC
High frequency
rectifier
chromium alloy
Tempered Glass
11. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
DC motor
Uniform attack
medium carbon steel
Dry corrosion
12. Between 2000-35 -700km above the earth's surface.
Medium earth orbit
Sacrifical anode
Frequency modulation
Attenuation
13. Good high temp wear - tools
open die forging
Strain
tungsten alloy
if 100% efficient
14. Being forced - under pressure - through a hole like toothpaste. either hot or cold
extrusion
Magnetic inspection
n
thermoplastic rubbers
15. An orbit less than 1 -500 km. above the Earth's surface.
Low earth orbit
chromium alloy
FM
Frequency modulation
16. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
ultra- high carbon steel
wet corrosion/electrochemical corrosion
Tempered Glass
Ultrasonic inspection
17. 1%<X<2% carbon. more cementite - used for files
Magnetic inspection
Dry corrosion
stress
ultra- high carbon steel
18. 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
bending stress
AC motor
Bernoulli's principle high speed
Frequency modulation
19. Elongation of grain flow in direction of rolling
Satellite
stress
Bernoulli's principle high speed
hot rolling
20. Area load piston/area of effort piston
VR
Dye penetration test
pearlite
nickel alloy
21. 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
thermoset rubbers
Commutator
Magnetic inspection
Normalising
22. 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
medium carbon steel
MA
Geosynchronous orbit
Low earth orbit
23. Ma/vr
Low earth orbit
n
Satellite
chromium alloy
24. 1/4 of the wavelength (higher better)
Frequency modulation
AC motor
Magnetic inspection
Radio antenna length
25. Soft - ductile
Bernoulli's principle high speed
n%
Geosynchronous orbit
ferrite
26. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
mild steel
Potential energy
Bandwidth
high carbon steel
27. 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
Tempered Glass
open die forging
Normalising
Transistor
28. 100khz
AM
Bernoulli's principle high speed
Commutator
nickel alloy
29. Area parallel to force
shear stress
thermosetting polymers
Satellite
Normalising
30. MA=VR
if 100% efficient
Hardening
Bandwidth
High frequency
31. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
ultra- high carbon steel
Hardening
Twisted pair cable
fibre optic cable
32. Soaked cast iron at 870c for long time then cooled slow
Tempered Glass
cold rolling
Mobiles
malleable cast iron
33. 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.
stress
Bandwidth
Twisted pair cable
Concrete
34. Resulting from exposure to damp environments and liquids.
Twisted pair cable
Fluorescent test
wet corrosion/electrochemical corrosion
thermosetting polymers
35. These have weaker secondary bonds which allow the stretching
cold rolling
Concrete
sin
thermoplastic rubbers
36. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Impressed current
Strain
bending stress
nodular graphite cast iron
37. The quantity of information that can be transmitted through a communication medium in a given amount of time.
malleable cast iron
Bandwidth
AM
extrusion
38. 10MHZ
Laminated glass
FM
Tempering
nickel alloy
39. When upper die is dropped on bottom
drop forging
AC motor
Dry corrosion
Impressed current
40. Low pressure
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41. A strong hard building material composed of sand and gravel and cement and water
ultra- high carbon steel
bending stress
Concrete
rectifier
42. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
shear stress
Magnetic inspection
Hardening
thermosetting polymers
43. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
n%
Satellite
spalling concrete
VR
44. Load/area
tungsten alloy
pearlite
Low carbon steel
stress
45. Supply current to the rotating commutator from an external source
Normalising
high carbon steel
Brushes
thermoset rubbers
46. Mass X gravity X height
Impressed current
Potential energy
Amplitude modulation
nodular graphite cast iron
47. Resulting from combined effect of stresses set up within the metal
Laminated glass
stress corrosion
DC motor
grey cast iron
48. 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
cold rolling
Radiography
thermosoftening polymer
49. Forming of metal by compressive force above recrystallization point.
manganese and silicon alloy
forging
Bandwidth
AC motor
50. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
drop forging
hot rolling
Kinetic energy