Important Inventions and Discoveries in World – 11

Important Inventions and Discoveries in World » Exercise – 1

11. Which of the following was first patented by an Australian in 1889?

(a) Electric Drill
(b) Electric Shaver
(c) Electric Fence
(d) Electric Heater

Answer
Answer : (a)
Explanation
Explanation : The Electric Drill was the invention of Arthur James Arnot. On 20 August 1889 he patented his design while working for the Union Electric Company in Melbourne. His original design was meant primarily for drilling rock to find coal!
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