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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 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.
thermoset rubbers
elastomers=what
Impressed current
Twisted pair cable
2. Rubbers
chromium alloy
elastomers=what
Satellite
cementite
3. 1%<X<2% carbon. more cementite - used for files
stress corrosion
mild steel
ultra- high carbon steel
sin
4. Good wear - case hardening. ball bearings
drop forging
Concrete
chromium alloy
VR
5. MA=VR
bending stress
Bernoulli's principle high speed
Normalising
if 100% efficient
6. 1/4 of the wavelength (higher better)
mild steel
Bandwidth
Normalising
Radio antenna length
7. Squeezing of the hot metal between two shaped dies excess is cut off
closed die forging
manganese and silicon alloy
thermoplastic rubbers
High frequency
8. Low pressure
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9. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
nodular graphite cast iron
Ultrasonic inspection
modulation
Kinetic energy
10. Between 2000-35 -700km above the earth's surface.
ferrite
Medium earth orbit
Potential energy
Hardening
11. Field winding parallel to armature winding. Bad for direct coupling
Radio antenna length
Impressed current
AC motor
DC motor
12. Supply current to the rotating commutator from an external source
Brushes
fibre optic cable
Tempering
Magnetic inspection
13. Maximum bending moments X distance to natural axis/ second moment of area
mild steel
Sacrifical anode
bending stress
MA
14. Elongation of grain flow in direction of rolling
Radiography
if 100% efficient
hot rolling
manganese and silicon alloy
15. Ma/vr x 100/1
Bernoulli's principle high speed
Tempering
drop forging
n%
16. 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
Fluorescent test
white cast iron
Radiography
Impressed current
17. 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
thermosoftening polymer
thermoplastic rubbers
white cast iron
18. X<1% silicon no graphite - has carbon/carbide. very brittle
Sacrifical anode
white cast iron
thermosetting polymers
Dry corrosion
19. x<0.15% carbon. ferrite. good for cold working - rolling sheets
MA
mild steel
Low carbon steel
thermosetting polymers
20. Being forced - under pressure - through a hole like toothpaste. either hot or cold
wet corrosion/electrochemical corrosion
spalling concrete
Annealing
extrusion
21. 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
malleable cast iron
white cast iron
cementite
Geosynchronous orbit
22. 1/2Xmass X velocity X velocity
Kinetic energy
Dry corrosion
Radio antenna length
bending stress
23. Better properties that would come from machining
thermosetting polymers
forging properties
VR
Sacrifical anode
24. 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
VR
MA
Sacrifical anode
FM
25. Hard - strong
Fluorescent test
mild steel
pearlite
nodular graphite cast iron
26. Vertical
malleable cast iron
Dry corrosion
sin
Ultrasonic inspection
27. Soft - ductile
malleable cast iron
rectifier
Amplitude modulation
ferrite
28. The greater the sulphur the harder the rubber to stretch
thermoset rubbers
thermosoftening polymer
Bernoulli's principle high speed
Uniform attack
29. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
n
high carbon steel
Radio antenna length
Dry corrosion
30. These have weaker secondary bonds which allow the stretching
elastomers=what
Low carbon steel
if 100% efficient
thermoplastic rubbers
31. 1GHZ
Laminated glass
thermosetting polymers
Mobiles
chromium alloy
32. Load/area
cos
Radio antenna length
Frequency modulation
stress
33. 100khz
Twisted pair cable
Strain
shear stress
AM
34. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Amplitude modulation
malleable cast iron
Radio antenna length
open die forging
35. 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
Geosynchronous orbit
Kinetic energy
FM
Commutator
36. Resulting from combined effect of stresses set up within the metal
AM
stress corrosion
MA
Annealing
37. Good high temp wear - tools
Ultrasonic inspection
Radio antenna length
tungsten alloy
thermosoftening polymer
38. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
Tempering
Laminated glass
fibre optic cable
nodular graphite cast iron
39. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
rectifier
cos
Tempered Glass
Dye penetration test
40. Hard - brittle
shear stress
cementite
FM
hot rolling
41. 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
Uniform attack
AC motor
grey cast iron
42. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Kinetic energy
medium carbon steel
VR
drop forging
43. 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.
Radio antenna length
Kinetic energy
hot rolling
Impressed current
44. Good toughness and fatigue. high strength structures
nickel alloy
AM
Dry corrosion
AC motor
45. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
High frequency
Kinetic energy
tungsten alloy
46. A method of transmitting signals by changing the amplitude of a waves
VR
medium carbon steel
ferrite
Amplitude modulation
47. When upper die is dropped on bottom
pearlite
drop forging
Normalising
Tempered Glass
48. Mass X gravity X height
Potential energy
Sacrifical anode
MA
Bernoulli's principle high speed
49. Area load piston/area of effort piston
VR
Amplitude modulation
Medium earth orbit
extrusion
50. 100GHZ+
Mobiles
Frequency modulation
Medium earth orbit
Satellite