General Knowledge
INVENTIONS MCQs
Total Questions : 214
| Page 5 of 22 pages
Answer: Option C. -> Automatic Telephone Exchanges
He was an undertaker, and legend has it, he developed the automatic switch in 1889, to stop competitors from getting his work.
He was an undertaker, and legend has it, he developed the automatic switch in 1889, to stop competitors from getting his work.
Answer: Option B. -> 1840s
The system was completed and public use initiated on May 24, 1844, with transmission of the message, “What hath God wrought!” This inaugurated the telegraph era in the United States, which was to last more than 100 years. Key-type Morse telegraph transmitter from the 1840s. Morse telegraph register from the 1840s.
The system was completed and public use initiated on May 24, 1844, with transmission of the message, “What hath God wrought!” This inaugurated the telegraph era in the United States, which was to last more than 100 years. Key-type Morse telegraph transmitter from the 1840s. Morse telegraph register from the 1840s.
Answer: Option B. -> The light a cat's eyes gave off on a fence
In 1933, Englishman Percy Shaw was driving home when he saw a cat's eyes reflecting. He had been headed straight towards a fence with the cat on it, but on the other side was a drop of hundreds of feet.
In 1933, Englishman Percy Shaw was driving home when he saw a cat's eyes reflecting. He had been headed straight towards a fence with the cat on it, but on the other side was a drop of hundreds of feet.
Answer: Option B. -> Michael Faraday
The first electromagnetic generator, the Faraday disk, was invented in 1831 by British scientist Michael Faraday. Generators provide nearly all of the power for electric power grids.
The first electromagnetic generator, the Faraday disk, was invented in 1831 by British scientist Michael Faraday. Generators provide nearly all of the power for electric power grids.
Answer: Option C. -> 1870s
On May 20, 1873, San Francisco businessman Levi Strauss and Reno, Nevada, tailor Jacob Davis are given a patent to create work pants reinforced with metal rivets, marking the birth of one of the world's most famous garments: blue jeans.
On May 20, 1873, San Francisco businessman Levi Strauss and Reno, Nevada, tailor Jacob Davis are given a patent to create work pants reinforced with metal rivets, marking the birth of one of the world's most famous garments: blue jeans.
Answer: Option D. -> Infant carrier
Ann got the idea for the Snugli infant carrier from the traditional African baby carriers she observed while a volunteer for the Peace Corps in Africa.
Ann got the idea for the Snugli infant carrier from the traditional African baby carriers she observed while a volunteer for the Peace Corps in Africa.
Answer: Option C. -> Water skis
Ralph Samuelson was only 18 when he invented water skis.
Ralph Samuelson was only 18 when he invented water skis.
Answer: Option C. -> Benjamin Franklin
Benjamin Franklin invented bifocal lens.
Benjamin Franklin invented bifocal lens.
Answer: Option A. -> 1940s
On December 23, 1947, William Shockley, Walter Brattain and John Bardeen, of Bell Labs, announced their discovery of the point-contact germanium transistor to management.
On December 23, 1947, William Shockley, Walter Brattain and John Bardeen, of Bell Labs, announced their discovery of the point-contact germanium transistor to management.
Answer: Option D. -> Pay telephone
William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.
William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.
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