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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. Squeezing of the hot metal between two shaped dies excess is cut off
Low carbon steel
Satellite
closed die forging
Sacrifical anode
2. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Sacrifical anode
fibre optic cable
Attenuation
Potential energy
3. Allows for another signal to be sent along the carrier signal
Transistor
modulation
Geosynchronous orbit
stress corrosion
4. 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
Sacrifical anode
Commutator
nickel alloy
Brushes
5. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
Brushes
nickel alloy
hot rolling
6. Mass X gravity X height
Kinetic energy
modulation
Potential energy
ultra- high carbon steel
7. Maximum bending moments X distance to natural axis/ second moment of area
thermoplastic rubbers
AC motor
rectifier
bending stress
8. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
nodular graphite cast iron
Laminated glass
Attenuation
pearlite
9. These have weaker secondary bonds which allow the stretching
thermosetting polymers
tungsten alloy
thermoplastic rubbers
Laminated glass
10. Load/area
stress
Attenuation
wet corrosion/electrochemical corrosion
Fluorescent test
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
cos
n%
AC motor
extrusion
12. Horizontal
Attenuation
Geosynchronous orbit
cos
Low earth orbit
13. Ma/vr
n
Low carbon steel
thermoplastic rubbers
ferrite
14. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.
Transistor
spalling concrete
thermoset rubbers
Bandwidth
15. Forming of metal by compressive force above recrystallization point.
Dry corrosion
Commutator
cos
forging
16. 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
Commutator
mild steel
DC motor
forging
17. Between 2000-35 -700km above the earth's surface.
Medium earth orbit
ultra- high carbon steel
Bernoulli's principle low speed
AM
18. x<0.15% carbon. ferrite. good for cold working - rolling sheets
Normalising
Low carbon steel
Attenuation
extrusion
19. A strong hard building material composed of sand and gravel and cement and water
Annealing
stress
Radio antenna length
Concrete
20. Hard - strong
modulation
Hardening
pearlite
stress
21. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points
Satellite
sin
grey cast iron
Twisted pair cable
22. Load/effort
medium carbon steel
MA
open die forging
chromium alloy
23. 1/4 of the wavelength (higher better)
Low earth orbit
Radio antenna length
stress corrosion
Laminated glass
24. 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
if 100% efficient
mild steel
High frequency
Annealing
25. Rubbers
VR
elastomers=what
Impressed current
AM
26. 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
Low earth orbit
Sacrifical anode
Fluorescent test
MA
27. Results from the changing anode and cathode regions over the entire surface
Laminated glass
Uniform attack
thermoset rubbers
Radio antenna length
28. 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
high carbon steel
Geosynchronous orbit
Commutator
thermoplastic rubbers
29. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
malleable cast iron
cementite
elastomers=what
30. 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.
n
FM
manganese and silicon alloy
Impressed current
31. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Commutator
high carbon steel
Potential energy
Magnetic inspection
32. Area load piston/area of effort piston
Medium earth orbit
cold rolling
Mobiles
VR
33. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
Strain
Radio antenna length
cos
Normalising
34. Usually used together - strengthening and toughness
Laminated glass
manganese and silicon alloy
Bernoulli's principle low speed
if 100% efficient
35. Field winding parallel to armature winding. Bad for direct coupling
DC motor
nickel alloy
Twisted pair cable
Bernoulli's principle low speed
36. Elongation of grain flow in direction of rolling
hot rolling
bending stress
Tempering
Normalising
37. Resulting from exposure to damp environments and liquids.
n
wet corrosion/electrochemical corrosion
Attenuation
nickel alloy
38. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool
Radiography
open die forging
chromium alloy
stress
39. Soft - ductile
stress
Impressed current
Satellite
ferrite
40. 1/2Xmass X velocity X velocity
Strain
Frequency modulation
pearlite
Kinetic energy
41. 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.
wet corrosion/electrochemical corrosion
Twisted pair cable
white cast iron
Dry corrosion
42. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses
thermoset rubbers
thermosoftening polymer
Tempering
Kinetic energy
43. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
n%
Frequency modulation
forging properties
44. When upper die is dropped on bottom
Laminated glass
drop forging
Magnetic inspection
Bernoulli's principle high speed
45. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Attenuation
thermoplastic rubbers
fibre optic cable
cos
46. Area parallel to force
shear stress
high carbon steel
malleable cast iron
FM
47. AC to DC
thermoset rubbers
rectifier
Satellite
MA
48. 10MHZ
FM
forging
rectifier
ultra- high carbon steel
49. The greater the sulphur the harder the rubber to stretch
cold rolling
Low earth orbit
thermoset rubbers
medium carbon steel
50. An orbit less than 1 -500 km. above the Earth's surface.
Frequency modulation
Twisted pair cable
Ultrasonic inspection
Low earth orbit