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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 method of transmitting signals by changing the frequency of a wave
chromium alloy
Frequency modulation
ultra- high carbon steel
n
2. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Annealing
Ultrasonic inspection
Frequency modulation
shear stress
3. Ma/vr
grey cast iron
Kinetic energy
n
closed die forging
4. 1GHZ
mild steel
Low earth orbit
Geosynchronous orbit
Mobiles
5. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Frequency modulation
malleable cast iron
high carbon steel
thermosoftening polymer
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
bending stress
open die forging
Annealing
n
7. 100khz
AM
high carbon steel
if 100% efficient
Satellite
8. Results from the changing anode and cathode regions over the entire surface
Commutator
Low carbon steel
thermoplastic rubbers
Uniform attack
9. Forming of metal by compressive force above recrystallization point.
forging
Annealing
ultra- high carbon steel
nickel alloy
10. Resulting from exposure to damp environments and liquids.
Bernoulli's principle high speed
if 100% efficient
nodular graphite cast iron
wet corrosion/electrochemical corrosion
11. Low pressure
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12. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
cementite
Radiography
pearlite
Bernoulli's principle low speed
13. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
n%
MA
if 100% efficient
Tempering
14. Soaked cast iron at 870c for long time then cooled slow
Attenuation
hot rolling
malleable cast iron
bending stress
15. 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
high carbon steel
MA
Fluorescent test
thermosoftening polymer
16. Hard - strong
forging properties
tungsten alloy
Low earth orbit
pearlite
17. An orbit less than 1 -500 km. above the Earth's surface.
Low earth orbit
spalling concrete
modulation
DC motor
18. Squeezing of the hot metal between two shaped dies excess is cut off
Fluorescent test
Radio antenna length
Magnetic inspection
closed die forging
19. Load/area
stress
grey cast iron
Normalising
VR
20. 1/4 of the wavelength (higher better)
VR
Radio antenna length
Potential energy
thermoset rubbers
21. Supply current to the rotating commutator from an external source
Brushes
wet corrosion/electrochemical corrosion
Attenuation
DC motor
22. Allows for another signal to be sent along the carrier signal
Uniform attack
modulation
stress corrosion
n%
23. AC to DC
chromium alloy
forging properties
rectifier
malleable cast iron
24. A method of transmitting signals by changing the amplitude of a waves
modulation
n%
Amplitude modulation
FM
25. 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.
nickel alloy
Impressed current
spalling concrete
Bandwidth
26. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
medium carbon steel
malleable cast iron
stress
Mobiles
27. Ma/vr x 100/1
Uniform attack
n%
MA
chromium alloy
28. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Magnetic inspection
Normalising
if 100% efficient
Low carbon steel
29. Elongation of grain flow in direction of rolling
FM
stress
bending stress
hot rolling
30. Produces; harder - stronger and less ductile product
Laminated glass
Radio antenna length
Hardening
cold rolling
31. The greater the sulphur the harder the rubber to stretch
stress corrosion
Transistor
thermoset rubbers
cos
32. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
Normalising
Dye penetration test
forging properties
33. Soft - ductile
drop forging
Strain
n
ferrite
34. Resulting from combined effect of stresses set up within the metal
Ultrasonic inspection
Geosynchronous orbit
stress corrosion
Sacrifical anode
35. Rubbers
elastomers=what
Low earth orbit
forging
thermoplastic rubbers
36. Field winding parallel to armature winding. Bad for direct coupling
DC motor
shear stress
n%
Impressed current
37. Load/effort
MA
Magnetic inspection
thermosoftening polymer
ultra- high carbon steel
38. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Tempered Glass
Geosynchronous orbit
Low earth orbit
elastomers=what
39. 10MHZ
Laminated glass
FM
fibre optic cable
white cast iron
40. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
Satellite
cos
Laminated glass
elastomers=what
41. MA=VR
Potential energy
Impressed current
if 100% efficient
white cast iron
42. Maximum bending moments X distance to natural axis/ second moment of area
MA
Ultrasonic inspection
bending stress
manganese and silicon alloy
43. Between 2000-35 -700km above the earth's surface.
Medium earth orbit
ultra- high carbon steel
if 100% efficient
sin
44. Good wear - case hardening. ball bearings
Bernoulli's principle high speed
chromium alloy
thermosoftening polymer
Dry corrosion
45. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
grey cast iron
if 100% efficient
AM
forging properties
46. X<1% silicon no graphite - has carbon/carbide. very brittle
white cast iron
Strain
Low earth orbit
Medium earth orbit
47. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
DC motor
Sacrifical anode
Normalising
rectifier
48. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
forging properties
shear stress
Hardening
Dry corrosion
49. Vertical
if 100% efficient
Hardening
VR
sin
50. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Low carbon steel
shear stress
rectifier
bending stress