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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. Field winding parallel to armature winding. Bad for direct coupling
Geosynchronous orbit
DC motor
Strain
Radio antenna length
2. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
malleable cast iron
grey cast iron
nickel alloy
3. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Bernoulli's principle low speed
Geosynchronous orbit
Transistor
medium carbon steel
4. Supply current to the rotating commutator from an external source
Commutator
if 100% efficient
Brushes
chromium alloy
5. A method of transmitting signals by changing the amplitude of a waves
Attenuation
pearlite
VR
Amplitude modulation
6. Resulting from combined effect of stresses set up within the metal
stress corrosion
Transistor
open die forging
rectifier
7. The greater the sulphur the harder the rubber to stretch
Sacrifical anode
thermoset rubbers
Medium earth orbit
stress
8. 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
Low carbon steel
Bernoulli's principle low speed
Laminated glass
Geosynchronous orbit
9. 100khz
if 100% efficient
Concrete
AM
Brushes
10. A strong hard building material composed of sand and gravel and cement and water
manganese and silicon alloy
elastomers=what
Concrete
rectifier
11. Usually used together - strengthening and toughness
spalling concrete
manganese and silicon alloy
thermosoftening polymer
AM
12. 1/2Xmass X velocity X velocity
Frequency modulation
high carbon steel
Kinetic energy
cold rolling
13. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
closed die forging
grey cast iron
pearlite
thermosoftening polymer
14. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Uniform attack
nodular graphite cast iron
pearlite
AM
15. Produces; harder - stronger and less ductile product
Bernoulli's principle low speed
cold rolling
Fluorescent test
Twisted pair cable
16. A cable made of optical fibers that can transmit large amounts of information at the speed of light
fibre optic cable
Low earth orbit
Mobiles
Bernoulli's principle low speed
17. Resulting from exposure to damp environments and liquids.
shear stress
pearlite
thermoset rubbers
wet corrosion/electrochemical corrosion
18. Soft - ductile
Frequency modulation
spalling concrete
Bernoulli's principle high speed
ferrite
19. AC to DC
rectifier
shear stress
Twisted pair cable
cold rolling
20. Good toughness and fatigue. high strength structures
nickel alloy
Uniform attack
ultra- high carbon steel
fibre optic cable
21. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Tempered Glass
Annealing
Laminated glass
Magnetic inspection
22. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Tempering
open die forging
thermosoftening polymer
thermosetting polymers
23. Difference/original
extrusion
n
MA
Strain
24. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
ultra- high carbon steel
n%
Satellite
25. High pressure
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26. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Ultrasonic inspection
n
chromium alloy
Dry corrosion
27. Vertical
wet corrosion/electrochemical corrosion
ferrite
High frequency
sin
28. X<1% silicon no graphite - has carbon/carbide. very brittle
FM
tungsten alloy
white cast iron
Amplitude modulation
29. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
Bernoulli's principle low speed
Laminated glass
cos
Impressed current
30. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Radio antenna length
extrusion
forging properties
thermoplastic rubbers
31. Good wear - case hardening. ball bearings
Radio antenna length
chromium alloy
open die forging
Impressed current
32. Between 2000-35 -700km above the earth's surface.
Tempering
Medium earth orbit
high carbon steel
tungsten alloy
33. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Ultrasonic inspection
sin
forging
ferrite
34. 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.
nodular graphite cast iron
fibre optic cable
Dry corrosion
Impressed current
35. 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
Ultrasonic inspection
Radiography
forging properties
AC motor
36. 100GHZ+
Low carbon steel
Satellite
Normalising
high carbon steel
37. 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
thermoplastic rubbers
grey cast iron
forging
Commutator
38. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Low carbon steel
Sacrifical anode
Attenuation
Impressed current
39. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
elastomers=what
MA
Potential energy
40. Allows for another signal to be sent along the carrier signal
AM
high carbon steel
open die forging
modulation
41. 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
Dye penetration test
VR
forging
closed die forging
42. Good high temp wear - tools
Ultrasonic inspection
mild steel
cementite
tungsten alloy
43. Horizontal
cos
Radiography
malleable cast iron
Hardening
44. Squeezing of the hot metal between two shaped dies excess is cut off
Satellite
MA
closed die forging
ferrite
45. Hard - brittle
cementite
DC motor
Annealing
n
46. 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
high carbon steel
Fluorescent test
Bernoulli's principle low speed
Laminated glass
47. Rubbers
mild steel
Tempered Glass
stress
elastomers=what
48. 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
cold rolling
extrusion
Sacrifical anode
medium carbon steel
49. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
thermosoftening polymer
Normalising
Transistor
Fluorescent test
50. Better properties that would come from machining
forging properties
wet corrosion/electrochemical corrosion
cementite
spalling concrete