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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. Resulting from exposure to damp environments and liquids.
MA
grey cast iron
malleable cast iron
wet corrosion/electrochemical corrosion
2. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
malleable cast iron
n%
Concrete
Hardening
3. 1%<X<2% carbon. more cementite - used for files
Attenuation
Bernoulli's principle high speed
Twisted pair cable
ultra- high carbon steel
4. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Amplitude modulation
grey cast iron
Low carbon steel
Normalising
5. AC to DC
Commutator
rectifier
MA
tungsten alloy
6. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
ultra- high carbon steel
Attenuation
n%
thermoset rubbers
7. Load/area
Laminated glass
stress
Geosynchronous orbit
n
8. Good high temp wear - tools
tungsten alloy
hot rolling
bending stress
Mobiles
9. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
elastomers=what
nodular graphite cast iron
if 100% efficient
thermosetting polymers
10. Hard - brittle
thermoset rubbers
cementite
Impressed current
fibre optic cable
11. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Transistor
Tempered Glass
extrusion
Frequency modulation
12. Mass X gravity X height
mild steel
malleable cast iron
Potential energy
cold rolling
13. 1GHZ
AC motor
Mobiles
Bernoulli's principle high speed
hot rolling
14. Ma/vr x 100/1
fibre optic cable
Uniform attack
malleable cast iron
n%
15. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
rectifier
Laminated glass
ultra- high carbon steel
Radiography
16. A method of transmitting signals by changing the frequency of a wave
DC motor
Frequency modulation
Magnetic inspection
thermoplastic rubbers
17. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
Bernoulli's principle high speed
mild steel
chromium alloy
tungsten alloy
18. Vertical
nickel alloy
cos
sin
Transistor
19. Results from the changing anode and cathode regions over the entire surface
forging properties
Uniform attack
FM
high carbon steel
20. Load/effort
grey cast iron
MA
Laminated glass
cos
21. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
elastomers=what
stress corrosion
Sacrifical anode
22. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
grey cast iron
Attenuation
spalling concrete
VR
23. 1/2Xmass X velocity X velocity
Commutator
cold rolling
Kinetic energy
Dry corrosion
24. 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
thermoset rubbers
stress
Geosynchronous orbit
Mobiles
25. 1/4 of the wavelength (higher better)
fibre optic cable
AM
Radio antenna length
Magnetic inspection
26. Allows for another signal to be sent along the carrier signal
VR
Dye penetration test
modulation
shear stress
27. Between 2000-35 -700km above the earth's surface.
Dye penetration test
Potential energy
Medium earth orbit
DC motor
28. Soaked cast iron at 870c for long time then cooled slow
malleable cast iron
thermoset rubbers
sin
cos
29. 100GHZ+
cementite
Annealing
Satellite
Frequency modulation
30. Squeezing of the hot metal between two shaped dies excess is cut off
if 100% efficient
ferrite
drop forging
closed die forging
31. Area parallel to force
shear stress
Annealing
cementite
Attenuation
32. A method of transmitting signals by changing the amplitude of a waves
hot rolling
Bandwidth
Amplitude modulation
Annealing
33. Softening a material such as metal by controlled heating and cooling. This makes the metal less brittle and more easily adaptable. Soaking till austenite then cooling slowly. large grains
bending stress
Annealing
Ultrasonic inspection
Potential energy
34. Forming of metal by compressive force above recrystallization point.
Satellite
forging
Hardening
Low carbon steel
35. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Radiography
bending stress
medium carbon steel
high carbon steel
36. Resulting from combined effect of stresses set up within the metal
mild steel
stress corrosion
AM
Frequency modulation
37. 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
Sacrifical anode
nickel alloy
Satellite
nodular graphite cast iron
38. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
Radiography
elastomers=what
AC motor
high carbon steel
39. Can be reflected of the ionosphere - 3 to 30 megahertz
rectifier
Annealing
bending stress
High frequency
40. Ma/vr
open die forging
n
Impressed current
thermoset rubbers
41. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
thermosoftening polymer
Magnetic inspection
Twisted pair cable
stress
42. 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.
thermoset rubbers
Bernoulli's principle high speed
Impressed current
Ultrasonic inspection
43. 10MHZ
nickel alloy
FM
Brushes
mild steel
44. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Dry corrosion
malleable cast iron
forging
pearlite
45. An orbit less than 1 -500 km. above the Earth's surface.
shear stress
cos
elastomers=what
Low earth orbit
46. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Low earth orbit
ultra- high carbon steel
Uniform attack
Radiography
47. Better properties that would come from machining
ferrite
spalling concrete
forging properties
Attenuation
48. A strong hard building material composed of sand and gravel and cement and water
open die forging
Concrete
cold rolling
thermoplastic rubbers
49. Usually used together - strengthening and toughness
medium carbon steel
manganese and silicon alloy
Potential energy
FM
50. High pressure
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