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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. MA=VR
grey cast iron
wet corrosion/electrochemical corrosion
thermoset rubbers
if 100% efficient
2. Elongation of grain flow in direction of rolling
hot rolling
Strain
chromium alloy
Bernoulli's principle low speed
3. An orbit less than 1 -500 km. above the Earth's surface.
rectifier
Tempered Glass
Low earth orbit
thermoplastic rubbers
4. A method of transmitting signals by changing the frequency of a wave
Transistor
spalling concrete
Frequency modulation
MA
5. Load/area
stress
Radio antenna length
Brushes
cos
6. 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
tungsten alloy
Commutator
Attenuation
Dry corrosion
7. Good wear - case hardening. ball bearings
Bandwidth
chromium alloy
Annealing
MA
8. 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
Strain
AC motor
rectifier
white cast iron
9. Area load piston/area of effort piston
Impressed current
VR
extrusion
Potential energy
10. Good high temp wear - tools
Amplitude modulation
tungsten alloy
Frequency modulation
thermosetting polymers
11. Squeezing of the hot metal between two shaped dies excess is cut off
manganese and silicon alloy
closed die forging
ultra- high carbon steel
Laminated glass
12. Better properties that would come from machining
High frequency
forging properties
Bandwidth
Kinetic energy
13. 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
Transistor
thermosoftening polymer
Commutator
Frequency modulation
14. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Sacrifical anode
bending stress
forging
Radiography
15. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Ultrasonic inspection
thermoset rubbers
white cast iron
Tempering
16. Rubbers
thermoplastic rubbers
wet corrosion/electrochemical corrosion
elastomers=what
forging
17. 1/2Xmass X velocity X velocity
Kinetic energy
Normalising
Commutator
malleable cast iron
18. Soaked cast iron at 870c for long time then cooled slow
open die forging
malleable cast iron
wet corrosion/electrochemical corrosion
MA
19. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
DC motor
Magnetic inspection
elastomers=what
FM
20. Hard - strong
high carbon steel
Bernoulli's principle high speed
extrusion
pearlite
21. Supply current to the rotating commutator from an external source
Brushes
drop forging
thermosetting polymers
forging
22. 10MHZ
Radiography
Radio antenna length
rectifier
FM
23. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
Tempering
bending stress
Medium earth orbit
High frequency
24. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
cos
Laminated glass
VR
pearlite
25. Hard - brittle
thermosetting polymers
cementite
Hardening
sin
26. Field winding parallel to armature winding. Bad for direct coupling
Satellite
AC motor
DC motor
nickel alloy
27. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
tungsten alloy
Sacrifical anode
Tempered Glass
High frequency
28. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
high carbon steel
spalling concrete
nickel alloy
29. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
Transistor
cementite
closed die forging
30. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
thermosoftening polymer
high carbon steel
medium carbon steel
Radiography
31. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
elastomers=what
Geosynchronous orbit
medium carbon steel
mild steel
32. 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.
Attenuation
Twisted pair cable
Radiography
elastomers=what
33. Being forced - under pressure - through a hole like toothpaste. either hot or cold
stress
Attenuation
nodular graphite cast iron
extrusion
34. 100GHZ+
Satellite
pearlite
chromium alloy
Kinetic energy
35. Ma/vr
n
Radio antenna length
nickel alloy
malleable cast iron
36. Solid at room temp - weak secondary bonds. can be reheated multiply times.
sin
bending stress
Bandwidth
thermosoftening polymer
37. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Geosynchronous orbit
spalling concrete
Annealing
fibre optic cable
38. Horizontal
Twisted pair cable
Normalising
VR
cos
39. AC to DC
closed die forging
rectifier
shear stress
sin
40. 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
Potential energy
DC motor
Low carbon steel
Sacrifical anode
41. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Normalising
Attenuation
thermoplastic rubbers
forging
42. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Satellite
Radiography
Sacrifical anode
Low carbon steel
43. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Radiography
Normalising
open die forging
Impressed current
44. High pressure
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45. Load/effort
if 100% efficient
FM
MA
closed die forging
46. Resulting from exposure to damp environments and liquids.
wet corrosion/electrochemical corrosion
malleable cast iron
thermoplastic rubbers
sin
47. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Concrete
Impressed current
fibre optic cable
cos
48. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Impressed current
Uniform attack
Brushes
Normalising
49. 1/4 of the wavelength (higher better)
elastomers=what
AC motor
Radio antenna length
Twisted pair cable
50. Forming of metal by compressive force above recrystallization point.
malleable cast iron
wet corrosion/electrochemical corrosion
forging
VR