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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. Rubbers
Impressed current
if 100% efficient
grey cast iron
elastomers=what
2. Area load piston/area of effort piston
malleable cast iron
VR
MA
Concrete
3. 10MHZ
Satellite
spalling concrete
Concrete
FM
4. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures
nodular graphite cast iron
chromium alloy
mild steel
Tempered Glass
5. 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.
Bernoulli's principle high speed
if 100% efficient
DC motor
Twisted pair cable
6. 100khz
thermoplastic rubbers
manganese and silicon alloy
AM
Bernoulli's principle high speed
7. Good wear - case hardening. ball bearings
wet corrosion/electrochemical corrosion
Ultrasonic inspection
chromium alloy
Normalising
8. Field winding parallel to armature winding. Bad for direct coupling
shear stress
rectifier
Bernoulli's principle high speed
DC motor
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
Dry corrosion
Sacrifical anode
manganese and silicon alloy
Commutator
10. 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
modulation
MA
Fluorescent test
open die forging
11. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear
high carbon steel
if 100% efficient
modulation
Bernoulli's principle high speed
12. 1%<X<2% carbon. more cementite - used for files
ultra- high carbon steel
ferrite
if 100% efficient
AM
13. The quantity of information that can be transmitted through a communication medium in a given amount of time.
chromium alloy
shear stress
Bandwidth
mild steel
14. A method of transmitting signals by changing the frequency of a wave
Frequency modulation
Commutator
Low earth orbit
nodular graphite cast iron
15. Better properties that would come from machining
VR
modulation
tungsten alloy
forging properties
16. Allows for another signal to be sent along the carrier signal
Tempering
extrusion
rectifier
modulation
17. Between 2000-35 -700km above the earth's surface.
Medium earth orbit
if 100% efficient
grey cast iron
Normalising
18. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.
nickel alloy
fibre optic cable
Mobiles
Ultrasonic inspection
19. 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
AC motor
medium carbon steel
mild steel
high carbon steel
20. Solid at room temp - weak secondary bonds. can be reheated multiply times.
thermoplastic rubbers
closed die forging
thermosoftening polymer
stress corrosion
21. Good high temp wear - tools
Bernoulli's principle low speed
tungsten alloy
sin
Magnetic inspection
22. Can be reflected of the ionosphere - 3 to 30 megahertz
High frequency
Bernoulli's principle high speed
Normalising
AC motor
23. A strong hard building material composed of sand and gravel and cement and water
Frequency modulation
Concrete
Bandwidth
Laminated glass
24. Produces; harder - stronger and less ductile product
cold rolling
thermosoftening polymer
Normalising
drop forging
25. The greater the sulphur the harder the rubber to stretch
DC motor
Low earth orbit
chromium alloy
thermoset rubbers
26. 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
extrusion
Satellite
Concrete
Geosynchronous orbit
27. 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
elastomers=what
forging
Frequency modulation
28. 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
Medium earth orbit
DC motor
spalling concrete
29. Supply current to the rotating commutator from an external source
thermoplastic rubbers
cos
Brushes
Radiography
30. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains
malleable cast iron
Normalising
Attenuation
Annealing
31. Resulting from exposure to damp environments and liquids.
Bernoulli's principle high speed
Geosynchronous orbit
wet corrosion/electrochemical corrosion
Sacrifical anode
32. Vertical
sin
medium carbon steel
nodular graphite cast iron
thermosetting polymers
33. x<0.15% carbon. ferrite. good for cold working - rolling sheets
mild steel
n
Low carbon steel
Low earth orbit
34. 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
Fluorescent test
rectifier
white cast iron
Annealing
35. A cable made of optical fibers that can transmit large amounts of information at the speed of light
Tempered Glass
cementite
Ultrasonic inspection
fibre optic cable
36. Forming of metal by compressive force above recrystallization point.
Geosynchronous orbit
nodular graphite cast iron
forging
Brushes
37. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
Twisted pair cable
FM
Laminated glass
cos
38. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies
Twisted pair cable
cos
cold rolling
Attenuation
39. A method of transmitting signals by changing the amplitude of a waves
Amplitude modulation
tungsten alloy
cold rolling
Geosynchronous orbit
40. Area parallel to force
Annealing
AC motor
Twisted pair cable
shear stress
41. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.
white cast iron
Dry corrosion
ferrite
nickel alloy
42. Good toughness and fatigue. high strength structures
nickel alloy
thermosetting polymers
Radio antenna length
grey cast iron
43. Load/effort
medium carbon steel
stress
MA
Dye penetration test
44. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects
Magnetic inspection
open die forging
cos
AM
45. Hard - strong
pearlite
grey cast iron
Dry corrosion
stress
46. Difference/original
High frequency
Hardening
Strain
Uniform attack
47. X<1% silicon no graphite - has carbon/carbide. very brittle
white cast iron
Low carbon steel
Geosynchronous orbit
FM
48. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds
Bernoulli's principle high speed
Potential energy
thermosetting polymers
grey cast iron
49. Ma/vr
n
AM
elastomers=what
grey cast iron
50. Squeezing of the hot metal between two shaped dies excess is cut off
drop forging
Low carbon steel
high carbon steel
closed die forging