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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 wear - case hardening. ball bearings
chromium alloy
Frequency modulation
bending stress
Geosynchronous orbit
2. Soaked cast iron at 870c for long time then cooled slow
Low carbon steel
malleable cast iron
Laminated glass
Potential energy
3. 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.
malleable cast iron
elastomers=what
Twisted pair cable
n%
4. 100khz
AM
AC motor
Sacrifical anode
Laminated glass
5. An orbit less than 1 -500 km. above the Earth's surface.
Satellite
Tempering
sin
Low earth orbit
6. Soft - ductile
ferrite
High frequency
stress corrosion
Geosynchronous orbit
7. Rubbers
Brushes
Geosynchronous orbit
elastomers=what
Potential energy
8. Field winding parallel to armature winding. Bad for direct coupling
Impressed current
DC motor
malleable cast iron
Mobiles
9. Load/area
Amplitude modulation
stress
Dry corrosion
Dye penetration test
10. Better properties that would come from machining
forging properties
Bernoulli's principle low speed
Radiography
grey cast iron
11. Resulting from combined effect of stresses set up within the metal
stress corrosion
pearlite
Strain
Frequency modulation
12. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
open die forging
nickel alloy
Uniform attack
Fluorescent test
13. Allows for another signal to be sent along the carrier signal
modulation
AC motor
forging
spalling concrete
14. Difference/original
ferrite
Twisted pair cable
Strain
ultra- high carbon steel
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
Attenuation
rectifier
Commutator
ferrite
16. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
shear stress
Attenuation
Laminated glass
Kinetic energy
17. Can be reflected of the ionosphere - 3 to 30 megahertz
FM
VR
Radiography
High frequency
18. When upper die is dropped on bottom
shear stress
Satellite
Impressed current
drop forging
19. 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
open die forging
Sacrifical anode
Impressed current
Annealing
20. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
thermoplastic rubbers
manganese and silicon alloy
Ultrasonic inspection
High frequency
21. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
thermosetting polymers
Potential energy
wet corrosion/electrochemical corrosion
Sacrifical anode
22. AC to DC
malleable cast iron
Transistor
chromium alloy
rectifier
23. Elongation of grain flow in direction of rolling
Transistor
drop forging
hot rolling
thermoplastic rubbers
24. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
Low carbon steel
Commutator
Dry corrosion
manganese and silicon alloy
25. A strong hard building material composed of sand and gravel and cement and water
grey cast iron
open die forging
Kinetic energy
Concrete
26. Maximum bending moments X distance to natural axis/ second moment of area
Concrete
cos
bending stress
forging properties
27. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching
Hardening
Low carbon steel
VR
chromium alloy
28. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film
Magnetic inspection
Low earth orbit
thermoplastic rubbers
Radiography
29. Solid at room temp - weak secondary bonds. can be reheated multiply times.
Geosynchronous orbit
forging properties
thermosoftening polymer
thermosetting polymers
30. Load/effort
High frequency
rectifier
forging properties
MA
31. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
mild steel
AM
Ultrasonic inspection
Hardening
32. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
high carbon steel
spalling concrete
Bandwidth
cold rolling
33. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations
Low carbon steel
nodular graphite cast iron
Mobiles
Annealing
34. Area load piston/area of effort piston
AC motor
Bandwidth
VR
Annealing
35. Ma/vr
n
Potential energy
ferrite
Laminated glass
36. MA=VR
if 100% efficient
Potential energy
fibre optic cable
Normalising
37. Being forced - under pressure - through a hole like toothpaste. either hot or cold
Annealing
extrusion
Geosynchronous orbit
Twisted pair cable
38. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
medium carbon steel
forging properties
closed die forging
grey cast iron
39. 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
Low earth orbit
AC motor
stress corrosion
Medium earth orbit
40. These have weaker secondary bonds which allow the stretching
thermosetting polymers
Bernoulli's principle high speed
modulation
thermoplastic rubbers
41. Mass X gravity X height
if 100% efficient
Potential energy
Fluorescent test
medium carbon steel
42. Area parallel to force
Kinetic energy
cold rolling
shear stress
Fluorescent test
43. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
High frequency
Tempered Glass
grey cast iron
Normalising
44. Results from the changing anode and cathode regions over the entire surface
Transistor
rectifier
Uniform attack
DC motor
45. Horizontal
Annealing
Radiography
cos
MA
46. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Normalising
n
ferrite
High frequency
47. 1GHZ
stress corrosion
Strain
nickel alloy
Mobiles
48. High pressure
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49. X<1% silicon no graphite - has carbon/carbide. very brittle
white cast iron
open die forging
Concrete
Sacrifical anode
50. 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
Kinetic energy
Transistor
Bernoulli's principle low speed
ferrite