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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. Good high temp wear - tools
tungsten alloy
stress
pearlite
Ultrasonic inspection
2. X<1% silicon no graphite - has carbon/carbide. very brittle
Tempering
Bandwidth
Radio antenna length
white cast iron
3. Resulting from combined effect of stresses set up within the metal
stress corrosion
Commutator
thermoset rubbers
chromium alloy
4. 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
Potential energy
AC motor
hot rolling
shear stress
5. Soft - ductile
cos
ferrite
Tempering
ultra- high carbon steel
6. 100GHZ+
Satellite
Low carbon steel
Attenuation
n%
7. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
rectifier
open die forging
hot rolling
8. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles
Bernoulli's principle high speed
medium carbon steel
Impressed current
nickel alloy
9. 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
High frequency
Commutator
Bernoulli's principle low speed
high carbon steel
10. Elongation of grain flow in direction of rolling
hot rolling
n
Twisted pair cable
MA
11. 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
Dye penetration test
ferrite
Transistor
Hardening
12. A strong hard building material composed of sand and gravel and cement and water
forging
Normalising
ultra- high carbon steel
Concrete
13. Usually used together - strengthening and toughness
Impressed current
tungsten alloy
wet corrosion/electrochemical corrosion
manganese and silicon alloy
14. Results from the changing anode and cathode regions over the entire surface
mild steel
ferrite
cold rolling
Uniform attack
15. Resulting from exposure to damp environments and liquids.
cold rolling
wet corrosion/electrochemical corrosion
Potential energy
thermosoftening polymer
16. Vertical
Magnetic inspection
Kinetic energy
sin
rectifier
17. Better properties that would come from machining
forging properties
Sacrifical anode
ultra- high carbon steel
thermosoftening polymer
18. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Dry corrosion
tungsten alloy
nodular graphite cast iron
Dye penetration test
19. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
Radio antenna length
Ultrasonic inspection
Satellite
20. Produces; harder - stronger and less ductile product
Bernoulli's principle low speed
cold rolling
stress corrosion
VR
21. Field winding parallel to armature winding. Bad for direct coupling
tungsten alloy
Bernoulli's principle high speed
FM
DC motor
22. An orbit less than 1 -500 km. above the Earth's surface.
Low earth orbit
open die forging
Frequency modulation
High frequency
23. Mass X gravity X height
DC motor
Potential energy
Bernoulli's principle high speed
AC motor
24. Good toughness and fatigue. high strength structures
nickel alloy
AM
cold rolling
Kinetic energy
25. 10MHZ
Low carbon steel
Geosynchronous orbit
FM
AC motor
26. Maximum bending moments X distance to natural axis/ second moment of area
if 100% efficient
bending stress
AM
Laminated glass
27. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
Transistor
ultra- high carbon steel
Tempered Glass
Kinetic energy
28. Area load piston/area of effort piston
Attenuation
Low earth orbit
VR
Dye penetration test
29. Solid at room temp - weak secondary bonds. can be reheated multiply times.
modulation
Bernoulli's principle high speed
thermosoftening polymer
hot rolling
30. The quantity of information that can be transmitted through a communication medium in a given amount of time.
Potential energy
Bandwidth
if 100% efficient
Magnetic inspection
31. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
open die forging
Geosynchronous orbit
Tempering
VR
32. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
MA
nodular graphite cast iron
high carbon steel
Uniform attack
33. 1GHZ
Commutator
manganese and silicon alloy
Mobiles
Kinetic energy
34. Can be reflected of the ionosphere - 3 to 30 megahertz
hot rolling
Strain
nodular graphite cast iron
High frequency
35. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
Twisted pair cable
stress
Ultrasonic inspection
Concrete
36. Rubbers
white cast iron
elastomers=what
Bandwidth
Satellite
37. The greater the sulphur the harder the rubber to stretch
Mobiles
Bernoulli's principle low speed
High frequency
thermoset rubbers
38. Hard - strong
stress
Concrete
AC motor
pearlite
39. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
DC motor
wet corrosion/electrochemical corrosion
Ultrasonic inspection
40. Load/effort
thermoset rubbers
MA
forging
Medium earth orbit
41. 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
Radiography
Fluorescent test
Dry corrosion
Laminated glass
42. Horizontal
Hardening
bending stress
cos
Radio antenna length
43. Soaked cast iron at 870c for long time then cooled slow
Frequency modulation
malleable cast iron
high carbon steel
Mobiles
44. Ma/vr
n
thermoset rubbers
thermoplastic rubbers
DC motor
45. AC to DC
Twisted pair cable
rectifier
Low carbon steel
spalling concrete
46. 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.
fibre optic cable
open die forging
Fluorescent test
Twisted pair cable
47. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Bandwidth
chromium alloy
Radiography
open die forging
48. Good wear - case hardening. ball bearings
AM
chromium alloy
closed die forging
cementite
49. Supply current to the rotating commutator from an external source
thermoset rubbers
FM
cementite
Brushes
50. MA=VR
Mobiles
if 100% efficient
Uniform attack
Laminated glass