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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 be reflected of the ionosphere - 3 to 30 megahertz
Attenuation
rectifier
High frequency
MA
2. 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
extrusion
Fluorescent test
white cast iron
if 100% efficient
3. Ma/vr
Medium earth orbit
n
Geosynchronous orbit
thermosetting polymers
4. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
fibre optic cable
Bernoulli's principle low speed
cementite
open die forging
5. AC to DC
open die forging
Bernoulli's principle low speed
rectifier
nickel alloy
6. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
Transistor
open die forging
VR
7. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
modulation
stress
Fluorescent test
medium carbon steel
8. Between 2000-35 -700km above the earth's surface.
Tempered Glass
if 100% efficient
Medium earth orbit
n%
9. Resulting from exposure to damp environments and liquids.
bending stress
Dry corrosion
wet corrosion/electrochemical corrosion
open die forging
10. Elongation of grain flow in direction of rolling
Brushes
hot rolling
cold rolling
ultra- high carbon steel
11. Hard - brittle
cementite
Commutator
MA
manganese and silicon alloy
12. Load/area
Bandwidth
stress
elastomers=what
cos
13. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
cold rolling
FM
nodular graphite cast iron
bending stress
14. The greater the sulphur the harder the rubber to stretch
Amplitude modulation
sin
thermoset rubbers
stress corrosion
15. Forming of metal by compressive force above recrystallization point.
grey cast iron
elastomers=what
forging
wet corrosion/electrochemical corrosion
16. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
MA
Tempered Glass
elastomers=what
High frequency
17. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
mild steel
Radiography
Frequency modulation
modulation
18. Solid at room temp - weak secondary bonds. can be reheated multiply times.
if 100% efficient
Magnetic inspection
shear stress
thermosoftening polymer
19. Low pressure
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20. Soaked cast iron at 870c for long time then cooled slow
pearlite
Medium earth orbit
VR
malleable cast iron
21. 1GHZ
Mobiles
Transistor
sin
forging properties
22. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Annealing
thermosetting polymers
wet corrosion/electrochemical corrosion
Dry corrosion
23. A strong hard building material composed of sand and gravel and cement and water
Radio antenna length
Attenuation
Magnetic inspection
Concrete
24. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Commutator
stress
Attenuation
Ultrasonic inspection
25. X<1% silicon no graphite - has carbon/carbide. very brittle
white cast iron
Bandwidth
wet corrosion/electrochemical corrosion
Magnetic inspection
26. 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
Low earth orbit
pearlite
Impressed current
Commutator
27. 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.
Annealing
MA
Impressed current
Bernoulli's principle low speed
28. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
tungsten alloy
Uniform attack
DC motor
grey cast iron
29. Supply current to the rotating commutator from an external source
thermoset rubbers
Concrete
Brushes
n
30. Results from the changing anode and cathode regions over the entire surface
nodular graphite cast iron
Uniform attack
Twisted pair cable
AC motor
31. 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
VR
Transistor
grey cast iron
n
32. Maximum bending moments X distance to natural axis/ second moment of area
nickel alloy
Bernoulli's principle low speed
high carbon steel
bending stress
33. Better properties that would come from machining
drop forging
forging properties
spalling concrete
extrusion
34. Area load piston/area of effort piston
manganese and silicon alloy
Concrete
VR
nickel alloy
35. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Tempering
AC motor
Mobiles
ferrite
36. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
white cast iron
Dry corrosion
Kinetic energy
Transistor
37. High pressure
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38. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Hardening
Ultrasonic inspection
manganese and silicon alloy
Attenuation
39. 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
extrusion
cold rolling
Dye penetration test
FM
40. Good wear - case hardening. ball bearings
Laminated glass
chromium alloy
spalling concrete
mild steel
41. Being forced - under pressure - through a hole like toothpaste. either hot or cold
extrusion
Potential energy
Medium earth orbit
white cast iron
42. 1/4 of the wavelength (higher better)
Radio antenna length
Mobiles
Attenuation
Potential energy
43. Horizontal
thermosetting polymers
Brushes
cementite
cos
44. The quantity of information that can be transmitted through a communication medium in a given amount of time.
modulation
Bandwidth
Commutator
DC motor
45. 100khz
wet corrosion/electrochemical corrosion
AM
rectifier
Dye penetration test
46. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
grey cast iron
Laminated glass
Dry corrosion
MA
47. Good toughness and fatigue. high strength structures
Dye penetration test
nickel alloy
fibre optic cable
Strain
48. Rubbers
MA
elastomers=what
Radio antenna length
high carbon steel
49. 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
n
mild steel
AC motor
Sacrifical anode
50. Good high temp wear - tools
Uniform attack
tungsten alloy
thermoplastic rubbers
Bernoulli's principle high speed