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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. Being forced - under pressure - through a hole like toothpaste. either hot or cold
closed die forging
Concrete
extrusion
ultra- high carbon steel
2. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
stress
Tempered Glass
High frequency
pearlite
3. Good high temp wear - tools
VR
tungsten alloy
Sacrifical anode
hot rolling
4. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Ultrasonic inspection
Kinetic energy
high carbon steel
Bernoulli's principle low speed
5. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Bernoulli's principle low speed
Tempered Glass
Bandwidth
Potential energy
6. MA=VR
malleable cast iron
if 100% efficient
Normalising
Bernoulli's principle low speed
7. Mass X gravity X height
nodular graphite cast iron
Potential energy
Mobiles
Fluorescent test
8. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
spalling concrete
MA
malleable cast iron
Concrete
9. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
fibre optic cable
Hardening
Laminated glass
open die forging
10. Load/area
Medium earth orbit
AC motor
Low earth orbit
stress
11. A method of transmitting signals by changing the frequency of a wave
fibre optic cable
High frequency
Frequency modulation
Amplitude modulation
12. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
VR
stress corrosion
mild steel
cementite
13. 10MHZ
Laminated glass
Bandwidth
Amplitude modulation
FM
14. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
medium carbon steel
Laminated glass
Tempering
DC motor
15. Good toughness and fatigue. high strength structures
Kinetic energy
cos
Attenuation
nickel alloy
16. 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
Annealing
bending stress
AC motor
Transistor
17. Rubbers
fibre optic cable
Dye penetration test
forging properties
elastomers=what
18. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
ferrite
Annealing
grey cast iron
elastomers=what
19. 1/4 of the wavelength (higher better)
ferrite
Annealing
Radio antenna length
Fluorescent test
20. 100GHZ+
closed die forging
Satellite
if 100% efficient
thermoset rubbers
21. Forming of metal by compressive force above recrystallization point.
open die forging
forging
chromium alloy
wet corrosion/electrochemical corrosion
22. 1/2Xmass X velocity X velocity
Kinetic energy
Fluorescent test
nodular graphite cast iron
Dye penetration test
23. Area load piston/area of effort piston
Bernoulli's principle low speed
Kinetic energy
Uniform attack
VR
24. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Tempering
mild steel
Dry corrosion
Geosynchronous orbit
25. When upper die is dropped on bottom
open die forging
VR
drop forging
fibre optic cable
26. Ma/vr x 100/1
stress
n%
Dry corrosion
Dye penetration test
27. 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
elastomers=what
Amplitude modulation
Potential energy
28. Good wear - case hardening. ball bearings
AM
chromium alloy
Attenuation
manganese and silicon alloy
29. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Kinetic energy
high carbon steel
Low carbon steel
AC motor
30. Supply current to the rotating commutator from an external source
DC motor
rectifier
Brushes
Uniform attack
31. Hard - strong
chromium alloy
Dry corrosion
white cast iron
pearlite
32. Allows for another signal to be sent along the carrier signal
closed die forging
elastomers=what
nodular graphite cast iron
modulation
33. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Attenuation
Potential energy
wet corrosion/electrochemical corrosion
extrusion
34. Squeezing of the hot metal between two shaped dies excess is cut off
closed die forging
Geosynchronous orbit
wet corrosion/electrochemical corrosion
cold rolling
35. Low pressure
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36. Can be reflected of the ionosphere - 3 to 30 megahertz
cos
High frequency
Fluorescent test
Bernoulli's principle high speed
37. Between 2000-35 -700km above the earth's surface.
Concrete
Annealing
Medium earth orbit
Uniform attack
38. Ma/vr
n
shear stress
Fluorescent test
thermoplastic rubbers
39. An orbit less than 1 -500 km. above the Earth's surface.
Concrete
Low earth orbit
closed die forging
Twisted pair cable
40. 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.
Impressed current
AM
Medium earth orbit
grey cast iron
41. These have weaker secondary bonds which allow the stretching
thermoplastic rubbers
AC motor
elastomers=what
Dye penetration test
42. 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
Low carbon steel
pearlite
hot rolling
Commutator
43. 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
Sacrifical anode
Amplitude modulation
n
High frequency
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
tungsten alloy
Strain
mild steel
45. X<1% silicon no graphite - has carbon/carbide. very brittle
fibre optic cable
white cast iron
Hardening
Ultrasonic inspection
46. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
Uniform attack
Radiography
Magnetic inspection
47. 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
fibre optic cable
Annealing
pearlite
Ultrasonic inspection
48. Maximum bending moments X distance to natural axis/ second moment of area
cold rolling
bending stress
Bandwidth
rectifier
49. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
fibre optic cable
if 100% efficient
Magnetic inspection
Hardening
50. High pressure
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