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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. A method of transmitting signals by changing the frequency of a wave
Satellite
Frequency modulation
MA
Potential energy
2. Better properties that would come from machining
Kinetic energy
forging properties
thermosoftening polymer
manganese and silicon alloy
3. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Dry corrosion
Satellite
Low carbon steel
Radiography
4. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Radiography
extrusion
Fluorescent test
Dry corrosion
5. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
extrusion
stress corrosion
nickel alloy
6. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Hardening
Kinetic energy
Mobiles
Dry corrosion
7. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Brushes
Ultrasonic inspection
malleable cast iron
mild steel
8. Area load piston/area of effort piston
thermosetting polymers
Bandwidth
VR
if 100% efficient
9. AC to DC
Attenuation
hot rolling
High frequency
rectifier
10. Results from the changing anode and cathode regions over the entire surface
Radio antenna length
Low carbon steel
Uniform attack
AC motor
11. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Tempered Glass
spalling concrete
Bernoulli's principle high speed
hot rolling
12. Hard - strong
Radiography
ferrite
Hardening
pearlite
13. The greater the sulphur the harder the rubber to stretch
shear stress
thermoset rubbers
high carbon steel
VR
14. Produces; harder - stronger and less ductile product
Twisted pair cable
cold rolling
white cast iron
shear stress
15. X<1% silicon no graphite - has carbon/carbide. very brittle
Amplitude modulation
white cast iron
Brushes
Mobiles
16. Resulting from combined effect of stresses set up within the metal
stress corrosion
FM
chromium alloy
High frequency
17. Low pressure
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18. Usually used together - strengthening and toughness
mild steel
Bernoulli's principle high speed
drop forging
manganese and silicon alloy
19. Horizontal
stress
cos
Concrete
Sacrifical anode
20. Forming of metal by compressive force above recrystallization point.
Tempering
forging
Satellite
Radiography
21. Elongation of grain flow in direction of rolling
Commutator
Laminated glass
forging
hot rolling
22. Can be reflected of the ionosphere - 3 to 30 megahertz
nodular graphite cast iron
High frequency
thermoset rubbers
Bernoulli's principle high speed
23. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Fluorescent test
Geosynchronous orbit
medium carbon steel
tungsten alloy
24. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
AC motor
Concrete
sin
25. Squeezing of the hot metal between two shaped dies excess is cut off
closed die forging
Hardening
wet corrosion/electrochemical corrosion
if 100% efficient
26. 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
Sacrifical anode
white cast iron
Impressed current
Laminated glass
27. MA=VR
if 100% efficient
modulation
high carbon steel
Low carbon steel
28. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
drop forging
Tempering
Brushes
closed die forging
29. 100GHZ+
Dry corrosion
AC motor
chromium alloy
Satellite
30. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
grey cast iron
AC motor
mild steel
31. Between 2000-35 -700km above the earth's surface.
drop forging
medium carbon steel
Medium earth orbit
Commutator
32. 100khz
Fluorescent test
Annealing
Magnetic inspection
AM
33. 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
fibre optic cable
Ultrasonic inspection
Commutator
34. 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
Commutator
grey cast iron
Strain
Dye penetration test
35. 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
Brushes
Geosynchronous orbit
malleable cast iron
tungsten alloy
36. Rubbers
Concrete
Bernoulli's principle low speed
elastomers=what
FM
37. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Bernoulli's principle high speed
Twisted pair cable
mild steel
Dry corrosion
38. 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.
Radio antenna length
Twisted pair cable
DC motor
Mobiles
39. Supply current to the rotating commutator from an external source
Brushes
Normalising
VR
Medium earth orbit
40. Ma/vr
thermosoftening polymer
thermoplastic rubbers
n
shear stress
41. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
wet corrosion/electrochemical corrosion
rectifier
Strain
42. 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
Frequency modulation
Dry corrosion
AC motor
Dye penetration test
43. Soft - ductile
fibre optic cable
ferrite
High frequency
thermosoftening polymer
44. Load/effort
bending stress
MA
thermoset rubbers
FM
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
mild steel
Annealing
thermosetting polymers
Mobiles
46. Solid at room temp - weak secondary bonds. can be reheated multiply times.
drop forging
thermosoftening polymer
forging
AM
47. Hard - brittle
cementite
Ultrasonic inspection
tungsten alloy
VR
48. 1/4 of the wavelength (higher better)
Amplitude modulation
Tempered Glass
Ultrasonic inspection
Radio antenna length
49. An orbit less than 1 -500 km. above the Earth's surface.
Low earth orbit
Strain
Mobiles
Brushes
50. Soaked cast iron at 870c for long time then cooled slow
nodular graphite cast iron
malleable cast iron
Satellite
sin