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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
Radio antenna length
ultra- high carbon steel
AC motor
Radiography
2. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
tungsten alloy
Low carbon steel
stress corrosion
grey cast iron
3. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
ferrite
sin
Satellite
Ultrasonic inspection
4. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Satellite
n%
Tempered Glass
Attenuation
5. Soft - ductile
n
ferrite
Impressed current
closed die forging
6. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
forging properties
Commutator
rectifier
Radiography
7. Ma/vr x 100/1
Uniform attack
n%
MA
high carbon steel
8. A method of transmitting signals by changing the amplitude of a waves
Mobiles
Dye penetration test
elastomers=what
Amplitude modulation
9. 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
rectifier
Radio antenna length
AM
Transistor
10. 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
Amplitude modulation
Annealing
hot rolling
open die forging
11. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
extrusion
elastomers=what
Twisted pair cable
12. MA=VR
if 100% efficient
Dry corrosion
Bernoulli's principle low speed
spalling concrete
13. AC to DC
rectifier
Uniform attack
Tempering
cos
14. Mass X gravity X height
Medium earth orbit
medium carbon steel
Twisted pair cable
Potential energy
15. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
white cast iron
Mobiles
medium carbon steel
16. 1GHZ
pearlite
DC motor
Low carbon steel
Mobiles
17. When upper die is dropped on bottom
grey cast iron
drop forging
n%
Uniform attack
18. 10MHZ
FM
if 100% efficient
ferrite
Hardening
19. 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
Amplitude modulation
Ultrasonic inspection
Commutator
20. Field winding parallel to armature winding. Bad for direct coupling
Twisted pair cable
FM
white cast iron
DC motor
21. Can be reflected of the ionosphere - 3 to 30 megahertz
Ultrasonic inspection
Bernoulli's principle low speed
High frequency
white cast iron
22. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Twisted pair cable
Tempering
Dry corrosion
Bandwidth
23. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
nodular graphite cast iron
ultra- high carbon steel
Bernoulli's principle high speed
ferrite
24. Horizontal
hot rolling
Ultrasonic inspection
thermoplastic rubbers
cos
25. 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.
Twisted pair cable
if 100% efficient
bending stress
n
26. X<1% silicon no graphite - has carbon/carbide. very brittle
Fluorescent test
thermoplastic rubbers
tungsten alloy
white cast iron
27. 100khz
medium carbon steel
Twisted pair cable
AM
tungsten alloy
28. 100GHZ+
tungsten alloy
Tempered Glass
Satellite
VR
29. Squeezing of the hot metal between two shaped dies excess is cut off
Normalising
hot rolling
closed die forging
grey cast iron
30. High pressure
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31. These have weaker secondary bonds which allow the stretching
thermoplastic rubbers
hot rolling
Satellite
Dye penetration test
32. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Medium earth orbit
thermosetting polymers
Frequency modulation
Commutator
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
Commutator
wet corrosion/electrochemical corrosion
Low earth orbit
open die forging
34. Results from the changing anode and cathode regions over the entire surface
Normalising
forging
cos
Uniform attack
35. Supply current to the rotating commutator from an external source
MA
thermosoftening polymer
high carbon steel
Brushes
36. Elongation of grain flow in direction of rolling
hot rolling
closed die forging
Low carbon steel
Radiography
37. Usually used together - strengthening and toughness
Transistor
Geosynchronous orbit
pearlite
manganese and silicon alloy
38. 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
Tempered Glass
ferrite
FM
39. Good wear - case hardening. ball bearings
extrusion
chromium alloy
ferrite
Low carbon steel
40. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
malleable cast iron
Magnetic inspection
Impressed current
thermosetting polymers
41. Load/area
rectifier
Fluorescent test
stress
extrusion
42. x<0.15% carbon. ferrite. good for cold working - rolling sheets
open die forging
n
Hardening
Low carbon steel
43. Ma/vr
stress
n
Twisted pair cable
Bandwidth
44. Resulting from combined effect of stresses set up within the metal
stress corrosion
n%
bending stress
chromium alloy
45. 1/2Xmass X velocity X velocity
MA
DC motor
chromium alloy
Kinetic energy
46. A cable made of optical fibers that can transmit large amounts of information at the speed of light
fibre optic cable
Mobiles
Annealing
Uniform attack
47. Low pressure
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48. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
if 100% efficient
high carbon steel
Commutator
modulation
49. 1%<X<2% carbon. more cementite - used for files
Frequency modulation
ultra- high carbon steel
Twisted pair cable
nodular graphite cast iron
50. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Tempering
Low earth orbit
medium carbon steel
Twisted pair cable