The Coffee Break Quiz - A challenging selection of General Engineering questions and answers Sometimes you just don't know what you don't know, but you're sure that you did know or that you should know and when you see the answers you know that once upon a time you probably did know !

Challenge your colleagues - can they answer more than you ?

1. The sine wave is a mathematical curve that describes a smooth repetitive oscillation . - True or False
2. The lux ( lx) is the SI  unit of sound - True or False
3. Before the development of Rare Earth Magnets - Magnets made from Alnico alloys were the strongest type of magnet available - True or False
4. Diamond saw blades are very hard - but do not have diamonds fixed to the cutting edge - True or False
5. A semiconductor is a device designed to neutralize lighting strikes created by violent thunderstorms - True or False
6. In computing - Moore's law is the observation that over the history of computing hardware, the number of transistors on integrated circuits doubles approximately every two years - True or False
7. In digital imaging - "The Pixel" is the person who re arranges digital artwork - True or False
8. Epicyclic gearing is also called planetary gearing - True or False
9. 1/32" equals what decimal of an inch - a) 0.000 3125  b) 0.003 125  c) 0.031 25  d) 0.312 5
10. The "Bar" is a unit of pressure - 1 bar is approximately equal to the atmospheric pressure on the Earth at sea level  - True or False

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ANSWERS

1) True  2) False - it is the unit of light  3) True  4) False - Diamond saw blades do have diamonds embedded in the cutting edge  5) False - it is a material which has electrical conductivity  between a conductor  and an insulator  6) True - the law is named after Intel co-founder Gordon E. Moore , who described the trend in a 1965 paper
  7) False - it is as the smallest single component of a digital image  8) True  9) c) 0.0312 5  10) True