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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. Solid at room temp - weak secondary bonds. can be reheated multiply times.
thermosoftening polymer
high carbon steel
Kinetic energy
bending stress
2. 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
forging properties
extrusion
Uniform attack
Commutator
3. 100GHZ+
Radio antenna length
cementite
Strain
Satellite
4. 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
n%
thermosoftening polymer
AM
Geosynchronous orbit
5. Squeezing of the hot metal between two shaped dies excess is cut off
wet corrosion/electrochemical corrosion
closed die forging
Hardening
Potential energy
6. 1/4 of the wavelength (higher better)
VR
Radio antenna length
Strain
Twisted pair cable
7. Low pressure
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8. Soaked cast iron at 870c for long time then cooled slow
tungsten alloy
Fluorescent test
Bernoulli's principle high speed
malleable cast iron
9. Ma/vr x 100/1
n%
thermosetting polymers
AM
n
10. Results from the changing anode and cathode regions over the entire surface
Kinetic energy
Magnetic inspection
stress
Uniform attack
11. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
pearlite
grey cast iron
drop forging
shear stress
12. Rubbers
AM
elastomers=what
Impressed current
thermosetting polymers
13. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
sin
Low earth orbit
Magnetic inspection
Amplitude modulation
14. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Dry corrosion
Attenuation
Normalising
Bandwidth
15. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
rectifier
high carbon steel
VR
Commutator
16. Mass X gravity X height
manganese and silicon alloy
Potential energy
Twisted pair cable
white cast iron
17. 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.
Potential energy
ferrite
AM
Twisted pair cable
18. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Bernoulli's principle high speed
Ultrasonic inspection
pearlite
Frequency modulation
19. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
nickel alloy
modulation
closed die forging
Tempered Glass
20. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Dye penetration test
Strain
malleable cast iron
spalling concrete
21. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Low carbon steel
high carbon steel
Amplitude modulation
malleable cast iron
22. Usually used together - strengthening and toughness
manganese and silicon alloy
cementite
Impressed current
Satellite
23. 1/2Xmass X velocity X velocity
Strain
Kinetic energy
elastomers=what
Dry corrosion
24. High pressure
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25. Vertical
sin
Tempering
malleable cast iron
Ultrasonic inspection
26. 100khz
AM
Fluorescent test
sin
DC motor
27. 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
cementite
AC motor
Commutator
forging
28. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Twisted pair cable
white cast iron
nodular graphite cast iron
Sacrifical anode
29. 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
spalling concrete
Concrete
Transistor
Dye penetration test
30. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Medium earth orbit
Normalising
AC motor
AM
31. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
ferrite
tungsten alloy
Concrete
medium carbon steel
32. The quantity of information that can be transmitted through a communication medium in a given amount of time.
ultra- high carbon steel
DC motor
Bernoulli's principle high speed
Bandwidth
33. Better properties that would come from machining
thermosetting polymers
forging properties
cos
elastomers=what
34. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
high carbon steel
nodular graphite cast iron
Fluorescent test
35. A strong hard building material composed of sand and gravel and cement and water
thermoset rubbers
mild steel
Concrete
fibre optic cable
36. When upper die is dropped on bottom
Geosynchronous orbit
drop forging
thermosoftening polymer
Magnetic inspection
37. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
extrusion
Frequency modulation
Radiography
Kinetic energy
38. 10MHZ
AM
ferrite
thermosoftening polymer
FM
39. Soft - ductile
wet corrosion/electrochemical corrosion
ferrite
Uniform attack
n
40. 1GHZ
Uniform attack
Mobiles
Amplitude modulation
n
41. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
malleable cast iron
if 100% efficient
Hardening
Radiography
42. Area parallel to force
Normalising
DC motor
shear stress
high carbon steel
43. Maximum bending moments X distance to natural axis/ second moment of area
bending stress
grey cast iron
n%
Attenuation
44. 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
Commutator
Low earth orbit
Twisted pair cable
45. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Geosynchronous orbit
Magnetic inspection
Tempering
Kinetic energy
46. Load/area
MA
pearlite
stress
Laminated glass
47. Hard - brittle
Magnetic inspection
thermoplastic rubbers
Strain
cementite
48. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
VR
modulation
Tempered Glass
Laminated glass
49. 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
stress
Transistor
Impressed current
Commutator
50. MA=VR
Radio antenna length
if 100% efficient
MA
Low earth orbit