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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. Supply current to the rotating commutator from an external source
Brushes
DC motor
Magnetic inspection
forging
2. Field winding parallel to armature winding. Bad for direct coupling
shear stress
DC motor
tungsten alloy
Low carbon steel
3. AC to DC
rectifier
AM
Potential energy
Bernoulli's principle low speed
4. Usually used together - strengthening and toughness
white cast iron
forging properties
manganese and silicon alloy
Concrete
5. The quantity of information that can be transmitted through a communication medium in a given amount of time.
forging
Bandwidth
open die forging
nickel alloy
6. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
sin
white cast iron
ultra- high carbon steel
Hardening
7. Resulting from combined effect of stresses set up within the metal
Bernoulli's principle high speed
Low earth orbit
stress corrosion
cos
8. 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
Kinetic energy
cos
rectifier
9. Load/area
MA
malleable cast iron
open die forging
stress
10. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
DC motor
if 100% efficient
Twisted pair cable
11. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
Dye penetration test
rectifier
Brushes
12. Good toughness and fatigue. high strength structures
Strain
Bandwidth
nickel alloy
sin
13. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Tempering
Attenuation
MA
Bernoulli's principle low speed
14. Hard - brittle
cementite
stress
AC motor
Sacrifical anode
15. 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
Radio antenna length
Impressed current
Fluorescent test
Bandwidth
16. 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.
Medium earth orbit
Twisted pair cable
n%
thermoset rubbers
17. Soft - ductile
Bernoulli's principle high speed
High frequency
stress corrosion
ferrite
18. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
FM
Mobiles
open die forging
Bernoulli's principle high speed
19. Vertical
Annealing
closed die forging
sin
FM
20. Good high temp wear - tools
Commutator
open die forging
n%
tungsten alloy
21. 10MHZ
Dry corrosion
tungsten alloy
bending stress
FM
22. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Bernoulli's principle high speed
extrusion
VR
Potential energy
23. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
High frequency
high carbon steel
open die forging
24. Good wear - case hardening. ball bearings
chromium alloy
Medium earth orbit
open die forging
grey cast iron
25. Load/effort
MA
bending stress
Satellite
Attenuation
26. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
mild steel
bending stress
Strain
ultra- high carbon steel
27. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
forging properties
Ultrasonic inspection
Geosynchronous orbit
sin
28. 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
cos
nickel alloy
Attenuation
Dye penetration test
29. 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
Frequency modulation
Magnetic inspection
Bernoulli's principle low speed
Annealing
30. 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
cos
Sacrifical anode
elastomers=what
sin
31. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
high carbon steel
Strain
Radiography
ferrite
32. A cable made of optical fibers that can transmit large amounts of information at the speed of light
bending stress
manganese and silicon alloy
fibre optic cable
Brushes
33. 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
Hardening
tungsten alloy
Impressed current
Commutator
34. 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.
Dry corrosion
Impressed current
chromium alloy
ferrite
35. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
cold rolling
FM
Bernoulli's principle low speed
Normalising
36. Mass X gravity X height
medium carbon steel
VR
Transistor
Potential energy
37. Produces; harder - stronger and less ductile product
thermoplastic rubbers
Magnetic inspection
Dye penetration test
cold rolling
38. 100khz
AM
mild steel
thermosoftening polymer
VR
39. 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
ultra- high carbon steel
white cast iron
Transistor
thermoset rubbers
40. Allows for another signal to be sent along the carrier signal
Bernoulli's principle low speed
tungsten alloy
modulation
thermoplastic rubbers
41. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Bernoulli's principle high speed
medium carbon steel
drop forging
ultra- high carbon steel
42. Low pressure
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43. These have weaker secondary bonds which allow the stretching
thermoplastic rubbers
manganese and silicon alloy
FM
Medium earth orbit
44. High pressure
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45. Hard - strong
Fluorescent test
drop forging
pearlite
Amplitude modulation
46. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
AM
bending stress
spalling concrete
Attenuation
47. A method of transmitting signals by changing the amplitude of a waves
nickel alloy
Amplitude modulation
Fluorescent test
Sacrifical anode
48. Squeezing of the hot metal between two shaped dies excess is cut off
stress
Bernoulli's principle low speed
Hardening
closed die forging
49. Between 2000-35 -700km above the earth's surface.
Medium earth orbit
cold rolling
Ultrasonic inspection
High frequency
50. Area parallel to force
pearlite
Strain
Tempering
shear stress