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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. 1/4 of the wavelength (higher better)
Geosynchronous orbit
tungsten alloy
Concrete
Radio antenna length
2. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Ultrasonic inspection
grey cast iron
Bernoulli's principle low speed
Uniform attack
3. An orbit less than 1 -500 km. above the Earth's surface.
grey cast iron
bending stress
Tempered Glass
Low earth orbit
4. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
medium carbon steel
Laminated glass
mild steel
tungsten alloy
5. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Twisted pair cable
Radiography
extrusion
Kinetic energy
6. Maximum bending moments X distance to natural axis/ second moment of area
Uniform attack
rectifier
bending stress
modulation
7. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Low earth orbit
cold rolling
Hardening
FM
8. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
manganese and silicon alloy
high carbon steel
grey cast iron
drop forging
9. Soaked cast iron at 870c for long time then cooled slow
pearlite
malleable cast iron
FM
Hardening
10. Hard - brittle
cementite
Twisted pair cable
Dry corrosion
Potential energy
11. Rubbers
wet corrosion/electrochemical corrosion
elastomers=what
ultra- high carbon steel
nodular graphite cast iron
12. Ma/vr
Hardening
rectifier
n
Strain
13. Low pressure
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14. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
Magnetic inspection
Low earth orbit
Geosynchronous orbit
15. Between 2000-35 -700km above the earth's surface.
Normalising
Bernoulli's principle high speed
Satellite
Medium earth orbit
16. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
Bernoulli's principle high speed
Bandwidth
Attenuation
17. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
MA
bending stress
high carbon steel
18. Results from the changing anode and cathode regions over the entire surface
Uniform attack
ferrite
Bernoulli's principle low speed
malleable cast iron
19. 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.
Concrete
Low earth orbit
Impressed current
Kinetic energy
20. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
ultra- high carbon steel
Bernoulli's principle high speed
fibre optic cable
Magnetic inspection
21. A strong hard building material composed of sand and gravel and cement and water
Impressed current
Concrete
DC motor
shear stress
22. Elongation of grain flow in direction of rolling
hot rolling
Attenuation
shear stress
cold rolling
23. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
tungsten alloy
malleable cast iron
DC motor
Dry corrosion
24. A cable made of optical fibers that can transmit large amounts of information at the speed of light
fibre optic cable
High frequency
closed die forging
AC motor
25. 1/2Xmass X velocity X velocity
nodular graphite cast iron
stress
Kinetic energy
cementite
26. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Concrete
Radiography
ultra- high carbon steel
chromium alloy
27. 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
Dye penetration test
Sacrifical anode
thermoplastic rubbers
thermosetting polymers
28. 100khz
if 100% efficient
wet corrosion/electrochemical corrosion
AM
stress
29. A method of transmitting signals by changing the frequency of a wave
Tempered Glass
Frequency modulation
mild steel
Annealing
30. Usually used together - strengthening and toughness
Sacrifical anode
manganese and silicon alloy
ultra- high carbon steel
shear stress
31. Mass X gravity X height
tungsten alloy
thermosoftening polymer
Potential energy
nodular graphite cast iron
32. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
mild steel
Radiography
Potential energy
rectifier
33. Can be reflected of the ionosphere - 3 to 30 megahertz
n%
thermoset rubbers
thermosetting polymers
High frequency
34. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Commutator
Dry corrosion
nodular graphite cast iron
ferrite
35. 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
Concrete
elastomers=what
Brushes
AC motor
36. 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
thermoset rubbers
Fluorescent test
cold rolling
Satellite
37. 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
Fluorescent test
Transistor
ultra- high carbon steel
Geosynchronous orbit
38. X<1% silicon no graphite - has carbon/carbide. very brittle
white cast iron
bending stress
pearlite
Radio antenna length
39. Field winding parallel to armature winding. Bad for direct coupling
bending stress
DC motor
if 100% efficient
Bernoulli's principle high speed
40. Better properties that would come from machining
forging properties
cold rolling
Satellite
Frequency modulation
41. AC to DC
Hardening
Annealing
Kinetic energy
rectifier
42. Vertical
FM
elastomers=what
sin
Mobiles
43. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
AC motor
pearlite
medium carbon steel
44. Hard - strong
Twisted pair cable
pearlite
ultra- high carbon steel
Low earth orbit
45. MA=VR
Concrete
extrusion
n
if 100% efficient
46. Ma/vr x 100/1
cementite
n%
grey cast iron
Strain
47. 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
Strain
Sacrifical anode
Attenuation
VR
48. Forming of metal by compressive force above recrystallization point.
stress corrosion
Normalising
forging
elastomers=what
49. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Annealing
n
Concrete
Low carbon steel
50. 1GHZ
Ultrasonic inspection
Brushes
Mobiles
forging