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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. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
Geosynchronous orbit
Dye penetration test
n
2. 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
mild steel
nickel alloy
Low earth orbit
3. High pressure
4. Good toughness and fatigue. high strength structures
Sacrifical anode
MA
nickel alloy
stress corrosion
5. Allows for another signal to be sent along the carrier signal
modulation
ferrite
Radio antenna length
Sacrifical anode
6. When upper die is dropped on bottom
nodular graphite cast iron
Sacrifical anode
drop forging
Impressed current
7. 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
Tempering
grey cast iron
Normalising
Geosynchronous orbit
8. 1/2Xmass X velocity X velocity
Bernoulli's principle low speed
Mobiles
Kinetic energy
Magnetic inspection
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 developer is then added to it to expose any left over - I.e in the cracks
VR
Dye penetration test
Kinetic energy
thermosoftening polymer
10. Between 2000-35 -700km above the earth's surface.
malleable cast iron
wet corrosion/electrochemical corrosion
Kinetic energy
Medium earth orbit
11. Can be reflected of the ionosphere - 3 to 30 megahertz
extrusion
thermoset rubbers
Potential energy
High frequency
12. Vertical
n
Uniform attack
stress
sin
13. Field winding parallel to armature winding. Bad for direct coupling
DC motor
stress
mild steel
nodular graphite cast iron
14. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Sacrifical anode
thermoset rubbers
open die forging
Strain
15. Hard - brittle
Ultrasonic inspection
n%
cementite
elastomers=what
16. A method of transmitting signals by changing the amplitude of a waves
wet corrosion/electrochemical corrosion
Amplitude modulation
extrusion
thermosoftening polymer
17. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Dye penetration test
white cast iron
Fluorescent test
thermosoftening polymer
18. 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
elastomers=what
tungsten alloy
Commutator
Radiography
19. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Attenuation
medium carbon steel
closed die forging
Tempered Glass
20. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
FM
Medium earth orbit
extrusion
Laminated glass
21. Results from the changing anode and cathode regions over the entire surface
Dry corrosion
Bernoulli's principle high speed
Fluorescent test
Uniform attack
22. Hard - strong
thermoset rubbers
Geosynchronous orbit
tungsten alloy
pearlite
23. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
ultra- high carbon steel
ferrite
MA
Normalising
24. AC to DC
Impressed current
rectifier
Dye penetration test
manganese and silicon alloy
25. Resulting from combined effect of stresses set up within the metal
Brushes
stress corrosion
Kinetic energy
DC motor
26. These have weaker secondary bonds which allow the stretching
Bandwidth
thermoplastic rubbers
Fluorescent test
nodular graphite cast iron
27. Elongation of grain flow in direction of rolling
Transistor
hot rolling
rectifier
Twisted pair cable
28. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
open die forging
hot rolling
Dry corrosion
spalling concrete
29. 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
rectifier
Bernoulli's principle high speed
Transistor
Low earth orbit
30. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Mobiles
Dye penetration test
Bandwidth
Sacrifical anode
31. 100GHZ+
Satellite
cementite
n
Normalising
32. Load/effort
Brushes
FM
drop forging
MA
33. Load/area
stress
Normalising
Tempering
bending stress
34. Soft - ductile
ferrite
Bernoulli's principle low speed
Strain
High frequency
35. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
nodular graphite cast iron
Bernoulli's principle high speed
Commutator
MA
36. Soaked cast iron at 870c for long time then cooled slow
forging properties
malleable cast iron
open die forging
grey cast iron
37. Rubbers
n
MA
high carbon steel
elastomers=what
38. Supply current to the rotating commutator from an external source
Sacrifical anode
FM
Annealing
Brushes
39. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Amplitude modulation
thermosetting polymers
medium carbon steel
Sacrifical anode
40. A strong hard building material composed of sand and gravel and cement and water
rectifier
n
Concrete
high carbon steel
41. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Strain
spalling concrete
Attenuation
n%
42. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Frequency modulation
grey cast iron
cold rolling
drop forging
43. A method of transmitting signals by changing the frequency of a wave
Laminated glass
cementite
Frequency modulation
Medium earth orbit
44. X<1% silicon no graphite - has carbon/carbide. very brittle
Impressed current
Medium earth orbit
white cast iron
Strain
45. 1%<X<2% carbon. more cementite - used for files
shear stress
Laminated glass
Medium earth orbit
ultra- high carbon steel
46. Mass X gravity X height
DC motor
Hardening
if 100% efficient
Potential energy
47. Forming of metal by compressive force above recrystallization point.
thermosetting polymers
forging
cold rolling
Radio antenna length
48. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Ultrasonic inspection
drop forging
tungsten alloy
if 100% efficient
49. 1/4 of the wavelength (higher better)
Mobiles
Geosynchronous orbit
Radio antenna length
DC motor
50. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
VR
shear stress
medium carbon steel
manganese and silicon alloy