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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 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.
if 100% efficient
Bernoulli's principle high speed
rectifier
Twisted pair cable
2. High pressure
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3. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
forging properties
Commutator
Laminated glass
Medium earth orbit
4. Area parallel to force
modulation
AM
VR
shear stress
5. When upper die is dropped on bottom
Hardening
Ultrasonic inspection
cementite
drop forging
6. Forming of metal by compressive force above recrystallization point.
forging
Frequency modulation
Bernoulli's principle low speed
pearlite
7. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
bending stress
spalling concrete
Transistor
Concrete
8. Can be reflected of the ionosphere - 3 to 30 megahertz
nickel alloy
if 100% efficient
High frequency
stress corrosion
9. Rubbers
elastomers=what
hot rolling
pearlite
Bernoulli's principle low speed
10. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
VR
sin
mild steel
extrusion
11. X<1% silicon no graphite - has carbon/carbide. very brittle
Tempering
AM
nodular graphite cast iron
white cast iron
12. Ma/vr x 100/1
medium carbon steel
thermoplastic rubbers
n%
AM
13. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
Strain
extrusion
fibre optic cable
14. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Commutator
bending stress
grey cast iron
VR
15. Ma/vr
ultra- high carbon steel
stress corrosion
cos
n
16. 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
closed die forging
Transistor
Bandwidth
extrusion
17. MA=VR
Dye penetration test
Bandwidth
High frequency
if 100% efficient
18. Good wear - case hardening. ball bearings
chromium alloy
mild steel
Dry corrosion
cos
19. Area load piston/area of effort piston
Transistor
VR
n%
high carbon steel
20. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Dye penetration test
Attenuation
Laminated glass
Radiography
21. Squeezing of the hot metal between two shaped dies excess is cut off
cementite
drop forging
closed die forging
ferrite
22. 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
Low earth orbit
grey cast iron
bending stress
23. 10MHZ
Strain
fibre optic cable
FM
Frequency modulation
24. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
FM
Strain
Magnetic inspection
Transistor
25. Maximum bending moments X distance to natural axis/ second moment of area
AC motor
Concrete
stress corrosion
bending stress
26. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Commutator
fibre optic cable
shear stress
grey cast iron
27. Soft - ductile
stress
ferrite
Geosynchronous orbit
Normalising
28. Load/area
Dry corrosion
Tempered Glass
stress
tungsten alloy
29. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Hardening
medium carbon steel
drop forging
pearlite
30. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
cos
AC motor
Radiography
sin
31. Results from the changing anode and cathode regions over the entire surface
medium carbon steel
pearlite
nodular graphite cast iron
Uniform attack
32. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
Amplitude modulation
high carbon steel
cementite
medium carbon steel
33. Vertical
Geosynchronous orbit
modulation
sin
Laminated glass
34. Difference/original
forging
Fluorescent test
Strain
cos
35. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
Mobiles
n%
chromium alloy
36. Supply current to the rotating commutator from an external source
Tempered Glass
forging
Brushes
Ultrasonic inspection
37. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Bandwidth
VR
chromium alloy
extrusion
38. These have weaker secondary bonds which allow the stretching
Hardening
Amplitude modulation
thermoplastic rubbers
Normalising
39. AC to DC
spalling concrete
drop forging
manganese and silicon alloy
rectifier
40. Usually used together - strengthening and toughness
Radiography
manganese and silicon alloy
stress
cos
41. Low pressure
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42. A strong hard building material composed of sand and gravel and cement and water
thermosetting polymers
stress corrosion
stress
Concrete
43. 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
Hardening
nodular graphite cast iron
Twisted pair cable
Annealing
44. 1GHZ
Hardening
Mobiles
shear stress
modulation
45. Soaked cast iron at 870c for long time then cooled slow
Low carbon steel
malleable cast iron
rectifier
Frequency modulation
46. 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
AC motor
Bernoulli's principle high speed
pearlite
ferrite
47. Produces; harder - stronger and less ductile product
DC motor
cold rolling
Fluorescent test
Strain
48. 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
wet corrosion/electrochemical corrosion
thermosoftening polymer
VR
49. The greater the sulphur the harder the rubber to stretch
Mobiles
medium carbon steel
thermoset rubbers
DC motor
50. Good toughness and fatigue. high strength structures
MA
Twisted pair cable
Hardening
nickel alloy