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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. Ma/vr
Sacrifical anode
thermoset rubbers
n
sin
2. These have weaker secondary bonds which allow the stretching
elastomers=what
ferrite
thermoplastic rubbers
FM
3. Ma/vr x 100/1
stress corrosion
Bernoulli's principle high speed
n%
stress
4. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Radiography
Commutator
Tempered Glass
VR
5. Good high temp wear - tools
tungsten alloy
DC motor
Bernoulli's principle high speed
Commutator
6. Supply current to the rotating commutator from an external source
elastomers=what
Brushes
wet corrosion/electrochemical corrosion
shear stress
7. Vertical
closed die forging
n%
sin
VR
8. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
Bernoulli's principle low speed
Commutator
Strain
9. Load/area
stress
Tempered Glass
open die forging
Radiography
10. A strong hard building material composed of sand and gravel and cement and water
Transistor
Concrete
Kinetic energy
Sacrifical anode
11. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Tempering
medium carbon steel
tungsten alloy
Satellite
12. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Brushes
Hardening
Geosynchronous orbit
ferrite
13. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Medium earth orbit
tungsten alloy
High frequency
Low carbon steel
14. MA=VR
thermosoftening polymer
thermoplastic rubbers
forging
if 100% efficient
15. When upper die is dropped on bottom
extrusion
drop forging
Kinetic energy
spalling concrete
16. Hard - brittle
FM
if 100% efficient
Fluorescent test
cementite
17. 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
Satellite
Frequency modulation
Mobiles
AC motor
18. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
rectifier
Laminated glass
Frequency modulation
Dry corrosion
19. Allows for another signal to be sent along the carrier signal
modulation
Potential energy
n%
AM
20. 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.
fibre optic cable
Impressed current
Twisted pair cable
Medium earth orbit
21. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
VR
Radiography
mild steel
Transistor
22. Good wear - case hardening. ball bearings
Dry corrosion
Bandwidth
Ultrasonic inspection
chromium alloy
23. 10MHZ
FM
n
cold rolling
MA
24. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
nodular graphite cast iron
Laminated glass
Amplitude modulation
Bandwidth
25. AC to DC
spalling concrete
rectifier
chromium alloy
Geosynchronous orbit
26. Produces; harder - stronger and less ductile product
cold rolling
closed die forging
FM
Geosynchronous orbit
27. 100GHZ+
nodular graphite cast iron
VR
Satellite
AM
28. The greater the sulphur the harder the rubber to stretch
thermoset rubbers
Amplitude modulation
thermosoftening polymer
pearlite
29. Solid at room temp - weak secondary bonds. can be reheated multiply times.
forging
Sacrifical anode
thermosoftening polymer
Bernoulli's principle high speed
30. 100khz
open die forging
thermoset rubbers
AM
chromium alloy
31. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
grey cast iron
Tempering
tungsten alloy
pearlite
32. An orbit less than 1 -500 km. above the Earth's surface.
Twisted pair cable
Low earth orbit
Satellite
sin
33. Mass X gravity X height
spalling concrete
ferrite
Potential energy
Impressed current
34. Results from the changing anode and cathode regions over the entire surface
Ultrasonic inspection
Uniform attack
Amplitude modulation
Bernoulli's principle high speed
35. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Dye penetration test
Impressed current
forging properties
Attenuation
36. 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
Mobiles
closed die forging
Transistor
Normalising
37. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Amplitude modulation
Bandwidth
Ultrasonic inspection
Frequency modulation
38. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Bandwidth
Radiography
Mobiles
Twisted pair cable
39. A method of transmitting signals by changing the amplitude of a waves
Sacrifical anode
Amplitude modulation
Impressed current
grey cast iron
40. Low pressure
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41. 1GHZ
Sacrifical anode
Mobiles
drop forging
stress
42. Hard - strong
Dry corrosion
stress corrosion
drop forging
pearlite
43. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Impressed current
spalling concrete
hot rolling
Low earth orbit
44. 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
stress
Annealing
chromium alloy
n%
45. 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
Low earth orbit
Tempered Glass
cold rolling
46. Being forced - under pressure - through a hole like toothpaste. either hot or cold
manganese and silicon alloy
tungsten alloy
if 100% efficient
extrusion
47. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
thermosetting polymers
white cast iron
Concrete
high carbon steel
48. A method of transmitting signals by changing the frequency of a wave
Fluorescent test
Frequency modulation
shear stress
Amplitude modulation
49. Soaked cast iron at 870c for long time then cooled slow
Attenuation
malleable cast iron
Sacrifical anode
Potential energy
50. Horizontal
Commutator
wet corrosion/electrochemical corrosion
stress corrosion
cos