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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. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Attenuation
Tempering
extrusion
nickel alloy
2. Good wear - case hardening. ball bearings
FM
AM
chromium alloy
Bandwidth
3. 1/2Xmass X velocity X velocity
mild steel
AM
Tempered Glass
Kinetic energy
4. Load/effort
MA
shear stress
Dye penetration test
Radio antenna length
5. Load/area
stress
cementite
grey cast iron
medium carbon steel
6. 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
shear stress
Transistor
Laminated glass
ultra- high carbon steel
7. AC to DC
if 100% efficient
Transistor
rectifier
Geosynchronous orbit
8. 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
VR
Fluorescent test
Bernoulli's principle high speed
Sacrifical anode
9. Vertical
Impressed current
mild steel
bending stress
sin
10. Resulting from combined effect of stresses set up within the metal
Bernoulli's principle low speed
stress corrosion
forging properties
Kinetic energy
11. The greater the sulphur the harder the rubber to stretch
fibre optic cable
Satellite
Radio antenna length
thermoset rubbers
12. X<1% silicon no graphite - has carbon/carbide. very brittle
pearlite
Low carbon steel
white cast iron
grey cast iron
13. Maximum bending moments X distance to natural axis/ second moment of area
fibre optic cable
bending stress
Medium earth orbit
Fluorescent test
14. 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
thermoplastic rubbers
Sacrifical anode
AM
Amplitude modulation
15. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
shear stress
grey cast iron
VR
Laminated glass
16. Allows for another signal to be sent along the carrier signal
Geosynchronous orbit
modulation
Low carbon steel
thermoplastic rubbers
17. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
rectifier
extrusion
thermosetting polymers
thermosoftening polymer
18. 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
stress corrosion
open die forging
19. x<0.15% carbon. ferrite. good for cold working - rolling sheets
DC motor
cos
Low carbon steel
bending stress
20. A method of transmitting signals by changing the amplitude of a waves
Transistor
Amplitude modulation
tungsten alloy
modulation
21. Elongation of grain flow in direction of rolling
nodular graphite cast iron
shear stress
Sacrifical anode
hot rolling
22. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Hardening
mild steel
thermosetting polymers
extrusion
23. 1%<X<2% carbon. more cementite - used for files
high carbon steel
ultra- high carbon steel
Commutator
stress corrosion
24. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
Low carbon steel
forging properties
Medium earth orbit
25. When upper die is dropped on bottom
wet corrosion/electrochemical corrosion
open die forging
Laminated glass
drop forging
26. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Tempered Glass
grey cast iron
Laminated glass
Strain
27. Can be reflected of the ionosphere - 3 to 30 megahertz
Bernoulli's principle high speed
High frequency
Mobiles
Kinetic energy
28. 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
fibre optic cable
AC motor
ultra- high carbon steel
Sacrifical anode
29. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Magnetic inspection
thermosetting polymers
thermosoftening polymer
Bandwidth
30. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
Transistor
Annealing
high carbon steel
manganese and silicon alloy
31. Resulting from exposure to damp environments and liquids.
white cast iron
Bernoulli's principle low speed
wet corrosion/electrochemical corrosion
Laminated glass
32. Results from the changing anode and cathode regions over the entire surface
thermoset rubbers
Satellite
Uniform attack
forging
33. 1GHZ
Mobiles
Dry corrosion
Concrete
AM
34. Hard - strong
sin
n
pearlite
Low carbon steel
35. Solid at room temp - weak secondary bonds. can be reheated multiply times.
medium carbon steel
malleable cast iron
extrusion
thermosoftening polymer
36. Difference/original
Amplitude modulation
Medium earth orbit
Strain
Impressed current
37. 1/4 of the wavelength (higher better)
Geosynchronous orbit
hot rolling
Strain
Radio antenna length
38. 100GHZ+
Low carbon steel
FM
stress corrosion
Satellite
39. Soft - ductile
Satellite
ferrite
sin
Ultrasonic inspection
40. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
Fluorescent test
High frequency
Tempering
41. Horizontal
Impressed current
AM
Fluorescent test
cos
42. 10MHZ
FM
Fluorescent test
Commutator
Low earth orbit
43. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
tungsten alloy
shear stress
Uniform attack
mild steel
44. 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.
Twisted pair cable
medium carbon steel
AC motor
if 100% efficient
45. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
n%
spalling concrete
medium carbon steel
Radiography
46. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
VR
spalling concrete
open die forging
AC motor
47. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Potential energy
FM
Hardening
Dry corrosion
48. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Attenuation
Radiography
open die forging
n%
49. 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
Hardening
drop forging
cold rolling
Geosynchronous orbit
50. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Brushes
Ultrasonic inspection
spalling concrete
n%