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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 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
chromium alloy
Concrete
Transistor
Tempered Glass
2. 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
hot rolling
Sacrifical anode
High frequency
3. X<1% silicon no graphite - has carbon/carbide. very brittle
medium carbon steel
Commutator
Kinetic energy
white cast iron
4. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Radio antenna length
nodular graphite cast iron
Radiography
drop forging
5. Squeezing of the hot metal between two shaped dies excess is cut off
closed die forging
stress
manganese and silicon alloy
nickel alloy
6. Vertical
forging properties
Bernoulli's principle high speed
Uniform attack
sin
7. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
elastomers=what
Dry corrosion
if 100% efficient
AC motor
8. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Low carbon steel
MA
elastomers=what
Ultrasonic inspection
9. Hard - strong
Tempering
pearlite
Frequency modulation
DC motor
10. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
wet corrosion/electrochemical corrosion
Kinetic energy
Attenuation
High frequency
11. 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
Bandwidth
hot rolling
AC motor
Magnetic inspection
12. Mass X gravity X height
Medium earth orbit
Potential energy
Twisted pair cable
Tempered Glass
13. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
thermosetting polymers
Brushes
forging
Uniform attack
14. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
malleable cast iron
n%
Radiography
hot rolling
15. 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
Fluorescent test
Commutator
Hardening
Transistor
16. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
thermoset rubbers
mild steel
Transistor
MA
17. When upper die is dropped on bottom
n%
drop forging
Twisted pair cable
DC motor
18. 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
Laminated glass
Hardening
Annealing
forging
19. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
extrusion
medium carbon steel
MA
thermosetting polymers
20. Ma/vr
spalling concrete
Mobiles
nickel alloy
n
21. 1%<X<2% carbon. more cementite - used for files
n%
Low carbon steel
ultra- high carbon steel
pearlite
22. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Commutator
n
thermosoftening polymer
Bandwidth
23. Can be reflected of the ionosphere - 3 to 30 megahertz
tungsten alloy
closed die forging
pearlite
High frequency
24. Good toughness and fatigue. high strength structures
Amplitude modulation
white cast iron
n%
nickel alloy
25. Forming of metal by compressive force above recrystallization point.
modulation
mild steel
forging
DC motor
26. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
Laminated glass
forging properties
Annealing
thermoset rubbers
27. 1/4 of the wavelength (higher better)
Radio antenna length
Kinetic energy
thermoset rubbers
Medium earth orbit
28. Produces; harder - stronger and less ductile product
high carbon steel
cold rolling
Sacrifical anode
Radio antenna length
29. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
MA
high carbon steel
grey cast iron
Brushes
30. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Impressed current
cementite
manganese and silicon alloy
Magnetic inspection
31. Horizontal
Dye penetration test
chromium alloy
Normalising
cos
32. Allows for another signal to be sent along the carrier signal
modulation
Mobiles
FM
spalling concrete
33. Elongation of grain flow in direction of rolling
Amplitude modulation
manganese and silicon alloy
Sacrifical anode
hot rolling
34. Low pressure
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35. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Bandwidth
Bernoulli's principle low speed
MA
Tempering
36. High pressure
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37. Resulting from combined effect of stresses set up within the metal
stress corrosion
ferrite
pearlite
FM
38. Ma/vr x 100/1
Impressed current
Brushes
n%
ultra- high carbon steel
39. Field winding parallel to armature winding. Bad for direct coupling
DC motor
white cast iron
if 100% efficient
MA
40. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
Mobiles
Geosynchronous orbit
Low carbon steel
41. Hard - brittle
cementite
thermosoftening polymer
Bernoulli's principle low speed
mild steel
42. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
bending stress
chromium alloy
thermosetting polymers
43. 1GHZ
Mobiles
Concrete
Strain
chromium alloy
44. 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.
Impressed current
thermosoftening polymer
Fluorescent test
sin
45. Area parallel to force
Satellite
shear stress
thermosetting polymers
Tempering
46. x<0.15% carbon. ferrite. good for cold working - rolling sheets
white cast iron
malleable cast iron
nodular graphite cast iron
Low carbon steel
47. 100khz
thermosoftening polymer
AM
cementite
drop forging
48. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Uniform attack
Dry corrosion
pearlite
Tempered Glass
49. These have weaker secondary bonds which allow the stretching
stress
Kinetic energy
sin
thermoplastic rubbers
50. Being forced - under pressure - through a hole like toothpaste. either hot or cold
wet corrosion/electrochemical corrosion
extrusion
elastomers=what
Amplitude modulation