Thermography 1

Quiz Questions

• 1.
  Who discovered infrared radiation 

  • A.
    Isaac Newton 
  • B.
    Galileo
  • C.
    William Herschel 
  • D.
    Max Planck
• 2.
  The law describing the relationship between a bodies ability to emit, and its ability to absorb is called

  • A.
    Stephan-Boltzmann law
  • B.
    Kirchoff’s law
  • C.
    1st law of thermodynamics 
  • D.
    2nd law of thermodynamics 
• 3.
  If the emissivity on an opaque object equals 0.7, what is its reflectivity?

  • A.
    0.7
  • B.
    1
  • C.
    0.3
  • D.
    0.4
• 4.
  In the electromagnetic spectrum where is the infrared region located?

  • A.
    Between visual and microwave regions
  • B.
    Between microwave and radio-wave regions
  • C.
    Between visual and UV regions
  • D.
    Between UV and x-ray regions
• 5.
  Which statement about emissivity and colour is correct?

  • A.
    Emissivity is dependent on colour
  • B.
    White has a higher emissivity than any other colour
  • C.
    Black has a higher emissivity than any other colour
  • D.
    Colour is independent of emissivity
• 6.
  For an object with ε=0.1, and τ=0.1, what is ρ?

  • A.
    0.1
  • B.
    0.2
  • C.
    0.3
  • D.
    0.8
• 7.
  Which statement below is correct about heat

  • A.
    Heat does not exist below 0°C
  • B.
    Heat flows from a low to a high temperature region
  • C.
    Heat only flows if there is thermal equilibrium 
  • D.
    Heat requires a temperature difference to flow
• 8.
  Which standard below relates to certification of thermographers?

  • A.
    ISO 18434
  • B.
    BS/EN 13187
  • C.
    BRE 176
  • D.
    ISO 18436
• 9.
  The 2nd law of thermodynamics states 

  • A.
    Heat flows from cold to hot
  • B.
    Heat flows from hot to cold
  • C.
    Heat does not flow between objects in equilibrium 
  • D.
    Heat flows between objects in equilibrium 
• 10.
  What of the following cannot be changed later in the software?

  • A.
    Focus, dynamic range & image composition 
  • B.
    Distance, air temperature & relative humidity 
  • C.
    Level, span & emissivity
  • D.
    None of the above can be changed
  • E.
    All of the above can be changed
• 11.
  Of the 4 tested materials listed below, which one is most suitable as an infrared mirror?

  • A.
    ε=0.92. τ=0.
  • B.
    ε=0.02. τ=0.8
  • C.
    ε=0.4. τ=0
  • D.
    ε=0.8. τ=0
• 12.
  What camera settings correct for atmospheric effects?

  • A.
    Reflected temperature, distance & range
  • B.
    Level, span & dynamic range
  • C.
    Emissivity, reflectivity & transmissivity
  • D.
    Distance, air temperature & relative humidity 
• 13.
  What are infrared camera lenses generally made from?

  • A.
    Glass
  • B.
    Germanium
  • C.
    Gallium arsenide 
  • D.
    Amorphous silicon 
• 14.
  Which of the following standards provides guidance for the contents of a thermography report?

  • A.
    ISO 18436 only
  • B.
    ISO 18434 only
  • C.
    Both ISO 18436 & ISO 18434
  • D.
    Neither 
• 15.
  What is the main difference between quantitative and qualitative thermography?

  • A.
    Qualitative uses temperature measurement 
  • B.
    Quantitative uses temperature measurement  
  • C.
    Both qualitative and quantitative use temperature measurement 
  • D.
    Neither qualitative nor quantitative use temperature measurement 

Quiz Outcomes

• 1.
  Result 1