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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. Squeezing of the hot metal between two shaped dies excess is cut off
closed die forging
Potential energy
spalling concrete
Low earth orbit
2. 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.
cos
ferrite
Impressed current
Geosynchronous orbit
3. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Strain
Sacrifical anode
extrusion
Hardening
4. These have weaker secondary bonds which allow the stretching
thermoset rubbers
Dry corrosion
Fluorescent test
thermoplastic rubbers
5. 1/2Xmass X velocity X velocity
Impressed current
Kinetic energy
Bernoulli's principle high speed
grey cast iron
6. 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
modulation
VR
Geosynchronous orbit
AC motor
7. Good toughness and fatigue. high strength structures
Uniform attack
thermoplastic rubbers
nickel alloy
DC motor
8. Resulting from combined effect of stresses set up within the metal
thermosetting polymers
stress corrosion
if 100% efficient
Bernoulli's principle high speed
9. 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
Commutator
Amplitude modulation
Medium earth orbit
thermosoftening polymer
10. Being forced - under pressure - through a hole like toothpaste. either hot or cold
drop forging
Laminated glass
extrusion
AC motor
11. Ma/vr x 100/1
grey cast iron
n%
Magnetic inspection
elastomers=what
12. Soaked cast iron at 870c for long time then cooled slow
nodular graphite cast iron
AM
nickel alloy
malleable cast iron
13. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
hot rolling
Normalising
Ultrasonic inspection
n%
14. 1GHZ
n%
drop forging
nodular graphite cast iron
Mobiles
15. Good wear - case hardening. ball bearings
Satellite
white cast iron
high carbon steel
chromium alloy
16. Better properties that would come from machining
forging properties
cos
tungsten alloy
ferrite
17. Between 2000-35 -700km above the earth's surface.
extrusion
Twisted pair cable
white cast iron
Medium earth orbit
18. Horizontal
ferrite
Laminated glass
cos
cementite
19. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Ultrasonic inspection
Tempered Glass
Twisted pair cable
thermoplastic rubbers
20. Can be reflected of the ionosphere - 3 to 30 megahertz
Mobiles
bending stress
ferrite
High frequency
21. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Commutator
AC motor
Dry corrosion
fibre optic cable
22. Allows for another signal to be sent along the carrier signal
hot rolling
modulation
nodular graphite cast iron
Bernoulli's principle high speed
23. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
wet corrosion/electrochemical corrosion
Magnetic inspection
Sacrifical anode
Impressed current
24. 1%<X<2% carbon. more cementite - used for files
Potential energy
tungsten alloy
Magnetic inspection
ultra- high carbon steel
25. Rubbers
Bandwidth
elastomers=what
cos
Brushes
26. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Dye penetration test
open die forging
Dry corrosion
extrusion
27. MA=VR
Tempered Glass
malleable cast iron
hot rolling
if 100% efficient
28. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Low earth orbit
thermosoftening polymer
grey cast iron
thermoset rubbers
29. 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
Twisted pair cable
Dye penetration test
shear stress
nickel alloy
30. Hard - brittle
Sacrifical anode
ultra- high carbon steel
cementite
n
31. The greater the sulphur the harder the rubber to stretch
Mobiles
thermosetting polymers
Brushes
thermoset rubbers
32. 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
VR
Radiography
Sacrifical anode
Geosynchronous orbit
33. 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
bending stress
Transistor
AC motor
Medium earth orbit
34. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
medium carbon steel
cos
Magnetic inspection
DC motor
35. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Commutator
n
Low carbon steel
Twisted pair cable
36. AC to DC
stress corrosion
Sacrifical anode
rectifier
High frequency
37. Load/effort
if 100% efficient
MA
drop forging
thermoset rubbers
38. 100khz
nodular graphite cast iron
AM
cementite
Bandwidth
39. Field winding parallel to armature winding. Bad for direct coupling
Hardening
DC motor
forging properties
Radiography
40. A method of transmitting signals by changing the amplitude of a waves
open die forging
closed die forging
drop forging
Amplitude modulation
41. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Tempering
Magnetic inspection
fibre optic cable
Tempered Glass
42. 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
Fluorescent test
ferrite
shear stress
Radio antenna length
43. Produces; harder - stronger and less ductile product
Geosynchronous orbit
Normalising
thermosetting polymers
cold rolling
44. A method of transmitting signals by changing the frequency of a wave
thermoset rubbers
Frequency modulation
FM
forging
45. Solid at room temp - weak secondary bonds. can be reheated multiply times.
thermosoftening polymer
stress
cold rolling
Annealing
46. Low pressure
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47. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
sin
bending stress
Bernoulli's principle low speed
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
Concrete
Sacrifical anode
Mobiles
ultra- high carbon steel
49. Maximum bending moments X distance to natural axis/ second moment of area
pearlite
thermoset rubbers
bending stress
Dye penetration test
50. High pressure
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