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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. 1%<X<2% carbon. more cementite - used for files
DC motor
manganese and silicon alloy
ultra- high carbon steel
AM
2. A method of transmitting signals by changing the frequency of a wave
Concrete
Frequency modulation
FM
thermoplastic rubbers
3. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
thermoset rubbers
Strain
Magnetic inspection
4. Results from the changing anode and cathode regions over the entire surface
Attenuation
if 100% efficient
Uniform attack
AC motor
5. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Medium earth orbit
cementite
Tempered Glass
FM
6. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Dry corrosion
fibre optic cable
chromium alloy
bending stress
7. 1/2Xmass X velocity X velocity
cos
Satellite
Kinetic energy
Concrete
8. Soaked cast iron at 870c for long time then cooled slow
thermosetting polymers
FM
Dry corrosion
malleable cast iron
9. Field winding parallel to armature winding. Bad for direct coupling
Attenuation
DC motor
Radiography
cementite
10. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
Sacrifical anode
Geosynchronous orbit
MA
Laminated glass
11. Load/effort
Strain
MA
tungsten alloy
Impressed current
12. High pressure
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13. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
tungsten alloy
Transistor
open die forging
Radiography
14. 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
thermoplastic rubbers
modulation
Fluorescent test
elastomers=what
15. X<1% silicon no graphite - has carbon/carbide. very brittle
stress
pearlite
Brushes
white cast iron
16. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
cementite
Tempering
chromium alloy
Radio antenna length
17. 100khz
cementite
AM
Radiography
forging properties
18. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Brushes
ferrite
Magnetic inspection
Medium earth orbit
19. Elongation of grain flow in direction of rolling
malleable cast iron
High frequency
Normalising
hot rolling
20. Hard - brittle
cementite
Dry corrosion
Tempered Glass
Magnetic inspection
21. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
shear stress
Concrete
cementite
medium carbon steel
22. 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
Frequency modulation
MA
AC motor
High frequency
23. 1GHZ
Tempering
High frequency
Mobiles
VR
24. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
spalling concrete
shear stress
open die forging
Dye penetration test
25. Horizontal
cos
wet corrosion/electrochemical corrosion
AM
Twisted pair cable
26. The greater the sulphur the harder the rubber to stretch
manganese and silicon alloy
drop forging
Concrete
thermoset rubbers
27. Usually used together - strengthening and toughness
manganese and silicon alloy
elastomers=what
medium carbon steel
ultra- high carbon steel
28. 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
Radio antenna length
Geosynchronous orbit
bending stress
Kinetic energy
29. Resulting from combined effect of stresses set up within the metal
stress corrosion
Mobiles
n
Attenuation
30. Soft - ductile
Bernoulli's principle high speed
Commutator
cos
ferrite
31. Mass X gravity X height
Radio antenna length
Potential energy
wet corrosion/electrochemical corrosion
ultra- high carbon steel
32. 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
Annealing
thermosetting polymers
bending stress
ferrite
33. Area load piston/area of effort piston
Low earth orbit
ferrite
VR
Twisted pair cable
34. Allows for another signal to be sent along the carrier signal
Low earth orbit
Tempering
modulation
open die forging
35. Area parallel to force
grey cast iron
shear stress
Amplitude modulation
n
36. A strong hard building material composed of sand and gravel and cement and water
Concrete
n%
tungsten alloy
medium carbon steel
37. Produces; harder - stronger and less ductile product
elastomers=what
cold rolling
Impressed current
Bernoulli's principle high speed
38. When upper die is dropped on bottom
spalling concrete
medium carbon steel
drop forging
mild steel
39. Good toughness and fatigue. high strength structures
Kinetic energy
nickel alloy
thermoset rubbers
elastomers=what
40. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Kinetic energy
cold rolling
medium carbon steel
Hardening
41. MA=VR
nodular graphite cast iron
if 100% efficient
tungsten alloy
n%
42. Good high temp wear - tools
high carbon steel
forging properties
tungsten alloy
stress corrosion
43. 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
Low earth orbit
Dye penetration test
elastomers=what
white cast iron
44. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
malleable cast iron
Ultrasonic inspection
thermoset rubbers
rectifier
45. Between 2000-35 -700km above the earth's surface.
medium carbon steel
hot rolling
n
Medium earth orbit
46. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
modulation
Dye penetration test
grey cast iron
47. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
cold rolling
chromium alloy
extrusion
48. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Brushes
Satellite
elastomers=what
Attenuation
49. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Dry corrosion
thermosetting polymers
Low earth orbit
Transistor
50. 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
sin
Sacrifical anode
thermoset rubbers
Frequency modulation