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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. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Mobiles
medium carbon steel
thermosetting polymers
forging properties
2. Load/area
stress
Kinetic energy
AC motor
MA
3. 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
Laminated glass
MA
FM
Commutator
4. 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
Mobiles
Annealing
Radiography
ultra- high carbon steel
5. When upper die is dropped on bottom
AC motor
Tempering
Bernoulli's principle low speed
drop forging
6. Allows for another signal to be sent along the carrier signal
Concrete
modulation
Medium earth orbit
Brushes
7. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
AM
DC motor
AC motor
8. 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
nickel alloy
mild steel
Twisted pair cable
Sacrifical anode
9. 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
Impressed current
High frequency
Strain
Dye penetration test
10. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Hardening
if 100% efficient
Tempering
Ultrasonic inspection
11. Area load piston/area of effort piston
VR
Mobiles
Low carbon steel
Magnetic inspection
12. Hard - strong
nickel alloy
drop forging
Kinetic energy
pearlite
13. 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
cementite
stress
stress corrosion
14. Good wear - case hardening. ball bearings
chromium alloy
Kinetic energy
Concrete
VR
15. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Hardening
Impressed current
extrusion
ferrite
16. Between 2000-35 -700km above the earth's surface.
Annealing
Attenuation
Mobiles
Medium earth orbit
17. 100GHZ+
shear stress
Hardening
Satellite
Magnetic inspection
18. MA=VR
if 100% efficient
cos
n
Hardening
19. 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.
Laminated glass
Twisted pair cable
Normalising
High frequency
20. 1/4 of the wavelength (higher better)
Commutator
Radio antenna length
Attenuation
Potential energy
21. High pressure
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22. These have weaker secondary bonds which allow the stretching
white cast iron
Dry corrosion
thermoplastic rubbers
Brushes
23. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Tempered Glass
cos
Dry corrosion
Annealing
24. Area parallel to force
Laminated glass
Medium earth orbit
ferrite
shear stress
25. The greater the sulphur the harder the rubber to stretch
Fluorescent test
thermoset rubbers
Laminated glass
Bernoulli's principle low speed
26. X<1% silicon no graphite - has carbon/carbide. very brittle
drop forging
n%
white cast iron
Radiography
27. Soft - ductile
drop forging
Amplitude modulation
ferrite
Potential energy
28. Field winding parallel to armature winding. Bad for direct coupling
Uniform attack
DC motor
Attenuation
ferrite
29. Produces; harder - stronger and less ductile product
spalling concrete
cold rolling
grey cast iron
wet corrosion/electrochemical corrosion
30. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Radiography
cold rolling
white cast iron
fibre optic cable
31. Mass X gravity X height
Potential energy
Uniform attack
Magnetic inspection
Annealing
32. Vertical
Uniform attack
Radiography
Transistor
sin
33. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
DC motor
Dry corrosion
thermoplastic rubbers
medium carbon steel
34. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
n%
VR
Uniform attack
35. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
MA
Attenuation
Mobiles
cold rolling
36. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Twisted pair cable
open die forging
Radiography
Kinetic energy
37. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Magnetic inspection
thermosetting polymers
Satellite
n%
38. AC to DC
cold rolling
rectifier
elastomers=what
Annealing
39. 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
Mobiles
Dye penetration test
Amplitude modulation
AC motor
40. A method of transmitting signals by changing the amplitude of a waves
Kinetic energy
Dry corrosion
Amplitude modulation
hot rolling
41. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
MA
Amplitude modulation
n
mild steel
42. Elongation of grain flow in direction of rolling
hot rolling
thermoset rubbers
Geosynchronous orbit
Potential energy
43. 10MHZ
ultra- high carbon steel
Concrete
drop forging
FM
44. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
bending stress
cold rolling
Hardening
45. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Tempering
Potential energy
Bernoulli's principle high speed
AM
46. x<0.15% carbon. ferrite. good for cold working - rolling sheets
elastomers=what
Bernoulli's principle low speed
cos
Low carbon steel
47. An orbit less than 1 -500 km. above the Earth's surface.
cold rolling
High frequency
drop forging
Low earth orbit
48. Good high temp wear - tools
tungsten alloy
ferrite
closed die forging
Hardening
49. Supply current to the rotating commutator from an external source
Brushes
shear stress
wet corrosion/electrochemical corrosion
Satellite
50. 1/2Xmass X velocity X velocity
thermosoftening polymer
n%
AC motor
Kinetic energy