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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. 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
Geosynchronous orbit
drop forging
high carbon steel
Strain
2. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
stress corrosion
Radiography
Fluorescent test
Magnetic inspection
3. x<0.15% carbon. ferrite. good for cold working - rolling sheets
white cast iron
Sacrifical anode
extrusion
Low carbon steel
4. Ma/vr
n
Normalising
extrusion
Mobiles
5. Hard - brittle
cementite
Medium earth orbit
white cast iron
n%
6. High pressure
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7. Better properties that would come from machining
Medium earth orbit
fibre optic cable
malleable cast iron
forging properties
8. Good wear - case hardening. ball bearings
chromium alloy
nickel alloy
if 100% efficient
rectifier
9. X<1% silicon no graphite - has carbon/carbide. very brittle
Low earth orbit
stress
grey cast iron
white cast iron
10. Allows for another signal to be sent along the carrier signal
if 100% efficient
spalling concrete
modulation
forging
11. 100GHZ+
forging
Satellite
Bernoulli's principle low speed
Mobiles
12. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Sacrifical anode
cold rolling
Ultrasonic inspection
Bandwidth
13. Field winding parallel to armature winding. Bad for direct coupling
Strain
fibre optic cable
stress corrosion
DC motor
14. Supply current to the rotating commutator from an external source
Potential energy
FM
Brushes
Amplitude modulation
15. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Normalising
Annealing
thermoset rubbers
nodular graphite cast iron
16. Forming of metal by compressive force above recrystallization point.
Concrete
AM
forging
Low carbon steel
17. Usually used together - strengthening and toughness
Dry corrosion
forging
Impressed current
manganese and silicon alloy
18. Soft - ductile
shear stress
open die forging
if 100% efficient
ferrite
19. MA=VR
cold rolling
thermoplastic rubbers
MA
if 100% efficient
20. When upper die is dropped on bottom
drop forging
grey cast iron
Fluorescent test
DC motor
21. These have weaker secondary bonds which allow the stretching
Kinetic energy
Dry corrosion
Geosynchronous orbit
thermoplastic rubbers
22. An orbit less than 1 -500 km. above the Earth's surface.
Strain
Low earth orbit
Amplitude modulation
nickel alloy
23. 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 Fluorescent light is turned on to expose any left over - I.e in the cracks
Normalising
Laminated glass
Fluorescent test
High frequency
24. 10MHZ
Bandwidth
FM
AM
Mobiles
25. 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
Strain
white cast iron
FM
26. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
manganese and silicon alloy
Radio antenna length
grey cast iron
Commutator
27. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Hardening
Laminated glass
thermoplastic rubbers
Tempered Glass
28. 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
Fluorescent test
Annealing
pearlite
Potential energy
29. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
if 100% efficient
modulation
thermoplastic rubbers
Tempering
30. Can be reflected of the ionosphere - 3 to 30 megahertz
Twisted pair cable
Medium earth orbit
FM
High frequency
31. Good toughness and fatigue. high strength structures
white cast iron
Attenuation
nickel alloy
Annealing
32. Ma/vr x 100/1
DC motor
open die forging
n%
hot rolling
33. Rubbers
cos
modulation
elastomers=what
drop forging
34. 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
VR
closed die forging
Dry corrosion
Commutator
35. Low pressure
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36. 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
rectifier
nodular graphite cast iron
bending stress
Dye penetration test
37. Load/area
Satellite
stress
tungsten alloy
high carbon steel
38. Vertical
Twisted pair cable
sin
Transistor
DC motor
39. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
chromium alloy
wet corrosion/electrochemical corrosion
Dry corrosion
AC motor
40. A strong hard building material composed of sand and gravel and cement and water
forging properties
Geosynchronous orbit
Concrete
elastomers=what
41. Area load piston/area of effort piston
Medium earth orbit
Magnetic inspection
high carbon steel
VR
42. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
Tempered Glass
bending stress
spalling concrete
43. Squeezing of the hot metal between two shaped dies excess is cut off
chromium alloy
Bandwidth
Normalising
closed die forging
44. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Concrete
Normalising
shear stress
rectifier
45. Produces; harder - stronger and less ductile product
Amplitude modulation
Medium earth orbit
Normalising
cold rolling
46. Area parallel to force
shear stress
white cast iron
Strain
Tempering
47. Horizontal
Bernoulli's principle low speed
Attenuation
cos
modulation
48. A method of transmitting signals by changing the amplitude of a waves
tungsten alloy
Strain
Attenuation
Amplitude modulation
49. Resulting from combined effect of stresses set up within the metal
Impressed current
bending stress
stress corrosion
Low earth orbit
50. AC to DC
Sacrifical anode
modulation
VR
rectifier