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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. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
manganese and silicon alloy
cos
AM
2. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Normalising
manganese and silicon alloy
extrusion
Frequency modulation
3. Results from the changing anode and cathode regions over the entire surface
closed die forging
high carbon steel
fibre optic cable
Uniform attack
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
cos
Geosynchronous orbit
Magnetic inspection
thermoset rubbers
5. These have weaker secondary bonds which allow the stretching
Attenuation
thermoplastic rubbers
Frequency modulation
bending stress
6. Supply current to the rotating commutator from an external source
stress
Transistor
Brushes
forging
7. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
hot rolling
Magnetic inspection
DC motor
medium carbon steel
8. 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.
Annealing
thermoplastic rubbers
Bernoulli's principle high speed
Twisted pair cable
9. A cable made of optical fibers that can transmit large amounts of information at the speed of light
modulation
fibre optic cable
AM
pearlite
10. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Geosynchronous orbit
Tempered Glass
Annealing
Impressed current
11. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
tungsten alloy
Concrete
Dry corrosion
spalling concrete
12. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
n
Ultrasonic inspection
Twisted pair cable
high carbon steel
13. High pressure
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14. 100khz
stress
Low earth orbit
Concrete
AM
15. Ma/vr x 100/1
Tempering
thermoset rubbers
closed die forging
n%
16. 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
mild steel
nodular graphite cast iron
MA
Commutator
17. Ma/vr
modulation
n
Tempering
mild steel
18. Mass X gravity X height
Frequency modulation
ultra- high carbon steel
tungsten alloy
Potential energy
19. Vertical
sin
thermosoftening polymer
n
Frequency modulation
20. MA=VR
MA
if 100% efficient
mild steel
Transistor
21. A strong hard building material composed of sand and gravel and cement and water
Transistor
Concrete
nodular graphite cast iron
modulation
22. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
rectifier
Concrete
mild steel
Radiography
23. Good wear - case hardening. ball bearings
rectifier
shear stress
chromium alloy
Magnetic inspection
24. 1GHZ
Low earth orbit
Mobiles
Kinetic energy
Strain
25. An orbit less than 1 -500 km. above the Earth's surface.
tungsten alloy
white cast iron
Low earth orbit
Annealing
26. Hard - brittle
rectifier
Low earth orbit
cementite
thermosoftening polymer
27. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
forging properties
high carbon steel
Medium earth orbit
fibre optic cable
28. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
manganese and silicon alloy
mild steel
Laminated glass
stress corrosion
29. Horizontal
bending stress
Uniform attack
grey cast iron
cos
30. The greater the sulphur the harder the rubber to stretch
ultra- high carbon steel
wet corrosion/electrochemical corrosion
malleable cast iron
thermoset rubbers
31. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
thermosetting polymers
Bernoulli's principle high speed
if 100% efficient
nickel alloy
32. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
ultra- high carbon steel
Concrete
manganese and silicon alloy
spalling concrete
33. 1%<X<2% carbon. more cementite - used for files
Radiography
Amplitude modulation
malleable cast iron
ultra- high carbon steel
34. Difference/original
Strain
Radiography
Attenuation
hot rolling
35. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
Attenuation
extrusion
AM
36. X<1% silicon no graphite - has carbon/carbide. very brittle
white cast iron
Low earth orbit
thermosetting polymers
Impressed current
37. A method of transmitting signals by changing the frequency of a wave
mild steel
if 100% efficient
Frequency modulation
closed die forging
38. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
Bernoulli's principle high speed
Attenuation
thermoset rubbers
39. Produces; harder - stronger and less ductile product
Low earth orbit
stress corrosion
MA
cold rolling
40. Squeezing of the hot metal between two shaped dies excess is cut off
Dye penetration test
Commutator
thermosoftening polymer
closed die forging
41. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Mobiles
forging
Tempering
Amplitude modulation
42. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
VR
fibre optic cable
nodular graphite cast iron
cementite
43. Usually used together - strengthening and toughness
elastomers=what
manganese and silicon alloy
stress
cos
44. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
ferrite
Bandwidth
Laminated glass
shear stress
45. 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
Brushes
Annealing
thermoset rubbers
Transistor
46. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Laminated glass
Commutator
Hardening
thermosetting polymers
47. 10MHZ
spalling concrete
chromium alloy
FM
Hardening
48. Area load piston/area of effort piston
Laminated glass
wet corrosion/electrochemical corrosion
VR
cos
49. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
Attenuation
Kinetic energy
ultra- high carbon steel
50. AC to DC
Low carbon steel
Radio antenna length
rectifier
Bernoulli's principle low speed