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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 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
n%
ferrite
AC motor
extrusion
2. X<1% silicon no graphite - has carbon/carbide. very brittle
fibre optic cable
white cast iron
Satellite
Strain
3. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Attenuation
spalling concrete
extrusion
Laminated glass
4. An orbit less than 1 -500 km. above the Earth's surface.
Kinetic energy
Medium earth orbit
Low earth orbit
Bandwidth
5. Field winding parallel to armature winding. Bad for direct coupling
DC motor
stress
thermosoftening polymer
Bandwidth
6. 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
sin
Annealing
thermoplastic rubbers
Bandwidth
7. Rubbers
rectifier
thermoplastic rubbers
AC motor
elastomers=what
8. Solid at room temp - weak secondary bonds. can be reheated multiply times.
n
Magnetic inspection
Twisted pair cable
thermosoftening polymer
9. Maximum bending moments X distance to natural axis/ second moment of area
bending stress
thermosetting polymers
Low carbon steel
Sacrifical anode
10. Good high temp wear - tools
thermosoftening polymer
AC motor
tungsten alloy
Attenuation
11. Resulting from exposure to damp environments and liquids.
Radio antenna length
chromium alloy
wet corrosion/electrochemical corrosion
Tempered Glass
12. A cable made of optical fibers that can transmit large amounts of information at the speed of light
shear stress
chromium alloy
wet corrosion/electrochemical corrosion
fibre optic cable
13. A method of transmitting signals by changing the frequency of a wave
thermoset rubbers
cementite
Frequency modulation
Normalising
14. 1GHZ
Amplitude modulation
Transistor
Mobiles
Fluorescent test
15. Forming of metal by compressive force above recrystallization point.
thermosetting polymers
chromium alloy
Tempering
forging
16. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Hardening
forging
thermoset rubbers
AC motor
17. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
stress corrosion
closed die forging
Radio antenna length
Tempering
18. A strong hard building material composed of sand and gravel and cement and water
Fluorescent test
n
Concrete
ultra- high carbon steel
19. Can be reflected of the ionosphere - 3 to 30 megahertz
Normalising
Bandwidth
High frequency
stress
20. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
stress corrosion
Potential energy
Hardening
21. 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
Satellite
Dry corrosion
fibre optic cable
Geosynchronous orbit
22. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Satellite
grey cast iron
nodular graphite cast iron
Normalising
23. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
DC motor
Laminated glass
Ultrasonic inspection
Twisted pair cable
24. 1/4 of the wavelength (higher better)
Dye penetration test
Geosynchronous orbit
Radio antenna length
Transistor
25. Load/effort
MA
Medium earth orbit
wet corrosion/electrochemical corrosion
DC motor
26. 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
Commutator
tungsten alloy
medium carbon steel
AM
27. High pressure
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28. Soaked cast iron at 870c for long time then cooled slow
Normalising
malleable cast iron
drop forging
stress corrosion
29. Allows for another signal to be sent along the carrier signal
Frequency modulation
Annealing
Bandwidth
modulation
30. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Bandwidth
Frequency modulation
n%
hot rolling
31. 100khz
AM
high carbon steel
Medium earth orbit
white cast iron
32. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Magnetic inspection
Bernoulli's principle high speed
Potential energy
shear stress
33. 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
Satellite
tungsten alloy
n
34. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
medium carbon steel
rectifier
Tempered Glass
if 100% efficient
35. Usually used together - strengthening and toughness
manganese and silicon alloy
Dry corrosion
shear stress
Annealing
36. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Hardening
wet corrosion/electrochemical corrosion
Radiography
Normalising
37. 10MHZ
FM
Frequency modulation
AC motor
open die forging
38. 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
bending stress
Dye penetration test
thermoplastic rubbers
Dry corrosion
39. 100GHZ+
fibre optic cable
cold rolling
Satellite
stress
40. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
AM
nodular graphite cast iron
Fluorescent test
Bernoulli's principle high speed
41. Elongation of grain flow in direction of rolling
hot rolling
Fluorescent test
MA
Laminated glass
42. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
MA
Potential energy
grey cast iron
VR
43. MA=VR
Hardening
Concrete
Uniform attack
if 100% efficient
44. Supply current to the rotating commutator from an external source
Brushes
ferrite
Low carbon steel
stress corrosion
45. Vertical
sin
Attenuation
Brushes
shear stress
46. When upper die is dropped on bottom
drop forging
Hardening
VR
Laminated glass
47. Between 2000-35 -700km above the earth's surface.
FM
mild steel
ferrite
Medium earth orbit
48. Ma/vr
n
bending stress
Magnetic inspection
n%
49. Resulting from combined effect of stresses set up within the metal
n
stress corrosion
MA
closed die forging
50. Hard - brittle
cementite
Tempered Glass
cold rolling
tungsten alloy