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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. 100khz
Mobiles
Impressed current
FM
AM
2. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
malleable cast iron
Ultrasonic inspection
Amplitude modulation
medium carbon steel
3. Resulting from combined effect of stresses set up within the metal
Radio antenna length
rectifier
Dye penetration test
stress corrosion
4. Being forced - under pressure - through a hole like toothpaste. either hot or cold
extrusion
Attenuation
Tempered Glass
mild steel
5. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Concrete
Bernoulli's principle high speed
Magnetic inspection
modulation
6. X<1% silicon no graphite - has carbon/carbide. very brittle
tungsten alloy
Bandwidth
white cast iron
Kinetic energy
7. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
cold rolling
fibre optic cable
nodular graphite cast iron
ultra- high carbon steel
8. 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.
Magnetic inspection
Impressed current
FM
Uniform attack
9. Soaked cast iron at 870c for long time then cooled slow
Frequency modulation
malleable cast iron
Bandwidth
Geosynchronous orbit
10. 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
Transistor
shear stress
Hardening
Sacrifical anode
11. 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
if 100% efficient
Transistor
Low carbon steel
thermoplastic rubbers
12. 1/2Xmass X velocity X velocity
thermoplastic rubbers
closed die forging
Kinetic energy
thermosoftening polymer
13. AC to DC
rectifier
Radiography
Mobiles
fibre optic cable
14. Elongation of grain flow in direction of rolling
rectifier
high carbon steel
tungsten alloy
hot rolling
15. 1%<X<2% carbon. more cementite - used for files
VR
ultra- high carbon steel
Fluorescent test
High frequency
16. Solid at room temp - weak secondary bonds. can be reheated multiply times.
thermosoftening polymer
medium carbon steel
Low earth orbit
nodular graphite cast iron
17. These have weaker secondary bonds which allow the stretching
thermoplastic rubbers
hot rolling
Medium earth orbit
Uniform attack
18. A method of transmitting signals by changing the frequency of a wave
Attenuation
Twisted pair cable
cold rolling
Frequency modulation
19. Usually used together - strengthening and toughness
Satellite
manganese and silicon alloy
Commutator
ferrite
20. Horizontal
cos
bending stress
wet corrosion/electrochemical corrosion
Medium earth orbit
21. Load/area
extrusion
Frequency modulation
stress
sin
22. Area load piston/area of effort piston
manganese and silicon alloy
modulation
Twisted pair cable
VR
23. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
tungsten alloy
mild steel
Transistor
Dry corrosion
24. A strong hard building material composed of sand and gravel and cement and water
ultra- high carbon steel
Concrete
bending stress
Strain
25. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
thermosetting polymers
tungsten alloy
Ultrasonic inspection
Uniform attack
26. Vertical
Kinetic energy
open die forging
Medium earth orbit
sin
27. Can be reflected of the ionosphere - 3 to 30 megahertz
fibre optic cable
Concrete
High frequency
AM
28. 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
chromium alloy
hot rolling
Geosynchronous orbit
pearlite
29. Squeezing of the hot metal between two shaped dies excess is cut off
drop forging
Twisted pair cable
sin
closed die forging
30. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Tempering
thermoset rubbers
cold rolling
n
31. 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.
n%
Magnetic inspection
Twisted pair cable
Kinetic energy
32. Better properties that would come from machining
extrusion
cementite
thermosoftening polymer
forging properties
33. Good toughness and fatigue. high strength structures
cos
Magnetic inspection
malleable cast iron
nickel alloy
34. Hard - brittle
cementite
wet corrosion/electrochemical corrosion
Uniform attack
Laminated glass
35. An orbit less than 1 -500 km. above the Earth's surface.
malleable cast iron
modulation
Twisted pair cable
Low earth orbit
36. 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
sin
AC motor
n%
white cast iron
37. A cable made of optical fibers that can transmit large amounts of information at the speed of light
n
fibre optic cable
malleable cast iron
extrusion
38. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
Bernoulli's principle high speed
thermosetting polymers
forging
39. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Tempered Glass
Mobiles
white cast iron
AC motor
40. 1/4 of the wavelength (higher better)
thermosetting polymers
thermoset rubbers
forging properties
Radio antenna length
41. Hard - strong
chromium alloy
pearlite
Satellite
Radio antenna length
42. Between 2000-35 -700km above the earth's surface.
Ultrasonic inspection
Normalising
spalling concrete
Medium earth orbit
43. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
medium carbon steel
Mobiles
Ultrasonic inspection
Geosynchronous orbit
44. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
forging
Medium earth orbit
Hardening
mild steel
45. Low pressure
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46. 1GHZ
Mobiles
malleable cast iron
white cast iron
Kinetic energy
47. Mass X gravity X height
stress
Potential energy
Concrete
cementite
48. 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
AC motor
Dye penetration test
open die forging
Tempering
49. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
high carbon steel
Strain
Tempering
50. Difference/original
Strain
thermosoftening polymer
malleable cast iron
Tempering