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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. Good toughness and fatigue. high strength structures
nickel alloy
DC motor
Uniform attack
Fluorescent test
2. 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
drop forging
Bandwidth
grey cast iron
3. Allows for another signal to be sent along the carrier signal
tungsten alloy
n
Bernoulli's principle low speed
modulation
4. Better properties that would come from machining
Hardening
forging properties
Tempered Glass
MA
5. Results from the changing anode and cathode regions over the entire surface
Uniform attack
Radiography
Geosynchronous orbit
thermoplastic rubbers
6. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
mild steel
thermosetting polymers
Commutator
nickel alloy
7. 1/4 of the wavelength (higher better)
Fluorescent test
Radio antenna length
tungsten alloy
medium carbon steel
8. Between 2000-35 -700km above the earth's surface.
AC motor
Impressed current
thermoset rubbers
Medium earth orbit
9. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
open die forging
thermosetting polymers
Tempering
VR
10. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
ferrite
Potential energy
shear stress
11. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Concrete
medium carbon steel
extrusion
cold rolling
12. Hard - brittle
Amplitude modulation
Frequency modulation
cementite
thermosetting polymers
13. A strong hard building material composed of sand and gravel and cement and water
Concrete
thermoplastic rubbers
MA
mild steel
14. Resulting from combined effect of stresses set up within the metal
stress corrosion
AM
Twisted pair cable
Dry corrosion
15. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
open die forging
ultra- high carbon steel
high carbon steel
closed die forging
16. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
shear stress
Fluorescent test
Hardening
Commutator
17. 1GHZ
thermoset rubbers
VR
MA
Mobiles
18. 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
if 100% efficient
Attenuation
AC motor
ultra- high carbon steel
19. Area parallel to force
shear stress
Medium earth orbit
Mobiles
Frequency modulation
20. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Bernoulli's principle low speed
AM
Strain
Dry corrosion
21. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
Bernoulli's principle low speed
Potential energy
Mobiles
22. Can be reflected of the ionosphere - 3 to 30 megahertz
cold rolling
elastomers=what
High frequency
Attenuation
23. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
AC motor
medium carbon steel
shear stress
Brushes
24. Soaked cast iron at 870c for long time then cooled slow
Geosynchronous orbit
malleable cast iron
bending stress
cementite
25. X<1% silicon no graphite - has carbon/carbide. very brittle
white cast iron
Frequency modulation
AM
High frequency
26. Supply current to the rotating commutator from an external source
extrusion
Brushes
tungsten alloy
elastomers=what
27. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Amplitude modulation
Normalising
Bernoulli's principle high speed
Bandwidth
28. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
chromium alloy
white cast iron
pearlite
spalling concrete
29. 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
modulation
cementite
Low carbon steel
30. Ma/vr
rectifier
n
grey cast iron
forging
31. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
open die forging
AM
Ultrasonic inspection
closed die forging
32. 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
DC motor
fibre optic cable
if 100% efficient
33. Horizontal
Twisted pair cable
stress
AC motor
cos
34. A method of transmitting signals by changing the amplitude of a waves
pearlite
Amplitude modulation
thermoset rubbers
ferrite
35. Area load piston/area of effort piston
bending stress
shear stress
VR
white cast iron
36. Solid at room temp - weak secondary bonds. can be reheated multiply times.
cementite
thermosoftening polymer
Kinetic energy
Geosynchronous orbit
37. 1/2Xmass X velocity X velocity
Impressed current
thermosoftening polymer
spalling concrete
Kinetic energy
38. The greater the sulphur the harder the rubber to stretch
Uniform attack
thermoset rubbers
if 100% efficient
Frequency modulation
39. Rubbers
Mobiles
shear stress
elastomers=what
malleable cast iron
40. Good high temp wear - tools
Attenuation
tungsten alloy
elastomers=what
AC motor
41. Produces; harder - stronger and less ductile product
ferrite
nickel alloy
shear stress
cold rolling
42. 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
Hardening
Potential energy
Amplitude modulation
43. 100GHZ+
Brushes
DC motor
Satellite
Attenuation
44. Field winding parallel to armature winding. Bad for direct coupling
Impressed current
Dry corrosion
DC motor
drop forging
45. Low pressure
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46. 100khz
chromium alloy
n
Low carbon steel
AM
47. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Tempered Glass
open die forging
Hardening
wet corrosion/electrochemical corrosion
48. When upper die is dropped on bottom
sin
drop forging
tungsten alloy
Potential energy
49. 10MHZ
modulation
spalling concrete
FM
Amplitude modulation
50. Good wear - case hardening. ball bearings
chromium alloy
thermoplastic rubbers
Ultrasonic inspection
Hardening