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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
Tempering
High frequency
cementite
cold rolling
2. Solid at room temp - weak secondary bonds. can be reheated multiply times.
grey cast iron
spalling concrete
Low earth orbit
thermosoftening polymer
3. Soaked cast iron at 870c for long time then cooled slow
MA
Annealing
high carbon steel
malleable cast iron
4. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Medium earth orbit
Attenuation
wet corrosion/electrochemical corrosion
extrusion
5. Usually used together - strengthening and toughness
Commutator
Brushes
manganese and silicon alloy
rectifier
6. The greater the sulphur the harder the rubber to stretch
thermoset rubbers
stress corrosion
sin
Normalising
7. A cable made of optical fibers that can transmit large amounts of information at the speed of light
grey cast iron
fibre optic cable
n
Radiography
8. 1%<X<2% carbon. more cementite - used for files
n
Brushes
extrusion
ultra- high carbon steel
9. Load/effort
sin
thermoplastic rubbers
Radio antenna length
MA
10. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
cold rolling
Normalising
Twisted pair cable
hot rolling
11. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Magnetic inspection
VR
drop forging
n%
12. 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
Uniform attack
Commutator
n
Hardening
13. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Bandwidth
Bernoulli's principle low speed
DC motor
medium carbon steel
14. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Attenuation
Medium earth orbit
thermoset rubbers
stress corrosion
15. Horizontal
chromium alloy
thermosetting polymers
high carbon steel
cos
16. Difference/original
Strain
Low carbon steel
malleable cast iron
nodular graphite cast iron
17. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
rectifier
tungsten alloy
Amplitude modulation
18. Supply current to the rotating commutator from an external source
thermosetting polymers
Strain
Satellite
Brushes
19. Good toughness and fatigue. high strength structures
nickel alloy
thermoplastic rubbers
Sacrifical anode
High frequency
20. Elongation of grain flow in direction of rolling
pearlite
Magnetic inspection
extrusion
hot rolling
21. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
modulation
pearlite
Laminated glass
22. Squeezing of the hot metal between two shaped dies excess is cut off
closed die forging
malleable cast iron
Tempered Glass
Mobiles
23. 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
Medium earth orbit
sin
tungsten alloy
24. High pressure
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25. 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
Sacrifical anode
nodular graphite cast iron
Dye penetration test
n%
26. Allows for another signal to be sent along the carrier signal
bending stress
modulation
Bernoulli's principle low speed
DC motor
27. Area parallel to force
Low carbon steel
thermoplastic rubbers
Radiography
shear stress
28. Resulting from exposure to damp environments and liquids.
Magnetic inspection
Laminated glass
wet corrosion/electrochemical corrosion
bending stress
29. 1/2Xmass X velocity X velocity
Kinetic energy
high carbon steel
Dry corrosion
Geosynchronous orbit
30. Good wear - case hardening. ball bearings
grey cast iron
Transistor
Fluorescent test
chromium alloy
31. Rubbers
grey cast iron
ultra- high carbon steel
elastomers=what
Frequency modulation
32. 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.
Laminated glass
Twisted pair cable
Bandwidth
Amplitude modulation
33. 1GHZ
Mobiles
Low earth orbit
mild steel
Impressed current
34. 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
Transistor
forging properties
Fluorescent test
Ultrasonic inspection
35. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
cos
mild steel
Radio antenna length
Amplitude modulation
36. Produces; harder - stronger and less ductile product
Amplitude modulation
Mobiles
chromium alloy
cold rolling
37. Soft - ductile
ferrite
Laminated glass
forging
Ultrasonic inspection
38. A strong hard building material composed of sand and gravel and cement and water
Concrete
sin
pearlite
hot rolling
39. Maximum bending moments X distance to natural axis/ second moment of area
MA
Bernoulli's principle high speed
Medium earth orbit
bending stress
40. 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
Concrete
Uniform attack
medium carbon steel
Annealing
41. Mass X gravity X height
hot rolling
Potential energy
forging
thermosoftening polymer
42. A method of transmitting signals by changing the frequency of a wave
thermosetting polymers
Frequency modulation
Bandwidth
chromium alloy
43. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Hardening
Tempered Glass
Transistor
grey cast iron
44. These have weaker secondary bonds which allow the stretching
Mobiles
modulation
thermoplastic rubbers
thermosetting polymers
45. 100khz
Uniform attack
Ultrasonic inspection
pearlite
AM
46. Good high temp wear - tools
sin
ultra- high carbon steel
tungsten alloy
Concrete
47. Field winding parallel to armature winding. Bad for direct coupling
DC motor
spalling concrete
cementite
Satellite
48. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
chromium alloy
Mobiles
Bandwidth
Hardening
49. Results from the changing anode and cathode regions over the entire surface
Uniform attack
malleable cast iron
Satellite
Frequency modulation
50. AC to DC
ultra- high carbon steel
Twisted pair cable
Dry corrosion
rectifier