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- Question
Who invented Jet Engine?
Options- A. Sir Frank Whittle
- B. Gottlieb Daimler
- C. Roger Bacon
- D. Lewis E. Waterman
- Correct Answer
- Sir Frank Whittle
ExplanationDr. Hans von Ohain and Sir Frank Whittle are recognized as the co-inventors of the jet engine. Each was working separately and knew nothing of the others work. Although Whittle started first, von Ohain was first to design and develop a turbojet engine to power an aircraft.
Of the many honors received by both, the most significant honor was probably "The Charles Draper Prize" in 1992 which was given to both Hans von Ohain and Sir Frank Whittle for their efforts and contributions to aviation and mankind. "The Charles Draper Prize" is recognized as the equivalent to the Nobel Prize in technology. - 1. In which decade was the Internet first implemented?
Options- A. 1940s
- B. 1950s
- C. 1960s
- D. 1980s Discuss
- 2. What toy did George Lerner create for Hasbro company in 1952?
Options- A. Sit and Spin
- B. Talking baby doll
- C. Mr. Potato Head
- D. Hula hoop Discuss
- 3. Where were wigs first invented?
Options- A. Japan
- B. France
- C. Egypt
- D. China Discuss
- 4. Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
Options- A. Golf tee
- B. Motorboat
- C. Water skis
- D. Hang glider Discuss
- 5. In the 1700s, who would pay the postage fee for letters before the stamp was invented?
Options- A. The sender
- B. There was no fee
- C. The receiver of the letter
- D. The post office Discuss
- 6. In which decade was the transistor invented?
Options- A. 1940s
- B. 1950s
- C. 1960s
- D. 1980s Discuss
- 7. Who invented fuel cells in 1839?
Options- A. Buckminster Fuller
- B. Sir William Grove
- C. Sylvester Graham
- D. Joyce Hall Discuss
- 8. What George Westinghouse invented?
Options- A. Light bulb
- B. Electric razor
- C. Refrigerator
- D. Railway air brakes Discuss
- 9. When was the game Frisbee invented?
Options- A. 1920s
- B. 1900s
- C. 1870s
- D. 1890s Discuss
- 10. When was the first elevator built?
Options- A. 1743
- B. 1739
- C. 1760
- D. 1785 Discuss
Inventions problems
Search Results
Correct Answer: 1960s
Explanation:
The first message ever sent over what is now called the Internet took place at 10:30PM on October 29, 1969. Back then, the Department of Defense called it ARPAnet (Advanced Research Projects Agency network).
Correct Answer: Mr. Potato Head
Explanation:
This was a plastic potato-shaped body on which you could stick different features, such as eyes, ears, etc.
Correct Answer: Egypt
Explanation:
As you have noticed in pictures, many Egyptians have head coverings, sometimes with beads in them. The first wigs were created to cover the head from the hot sun.
Correct Answer: Water skis
Explanation:
The new item was first used on Lake Pepin in Minnesota.
Correct Answer: The receiver of the letter
Explanation:
Later in 1840, Rowland Hill invented the stamp, which was paid for by the sender, not the receiver.
Correct Answer: 1940s
Explanation:
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.
Correct Answer: Sir William Grove
Explanation:
Fuel cells were invented in 1839 by Sir William Grove.
Correct Answer: Railway air brakes
Explanation:
Invented in 1868.
Correct Answer: 1870s
Explanation:
The first Frisbees were pie tins from the Frisbie Pie Company in Connecticut. In the 1950s, the pie tins were changed to plastic plates. The name then became the Flying Saucer, but later changed to Frisbee.
Correct Answer: 1743
Explanation:
The first elevator was built in the palace of King Louis XV. It only traveled up one floor, and was hand powered by men inside the chimney.
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