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- Question
What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
Options- A. Telegraph
- B. Radio
- C. Television
- D. Dishwasher
- Correct Answer
- Television
ExplanationZworykin invented both the tube (iconoscope) for transmission and the receiver (kinescope) in 1923 and 1924, respectively. - 1. Who invented Bicycle?
Options- A. Leo H Baekeland
- B. Karl Benz
- C. Evangelista Torricelli
- D. Kirkpatrick Macmillan Discuss
- 2. Who invented the Seed Drill?
Options- A. Jethro Tull
- B. Arlo Guthrie
- C. Woodie Guthrie
- D. Thomas Hines Discuss
- 3. What charge card, developed in 1950, was the first to be accepted nationally in the US?
Options- A. Visa
- B. Discover
- C. MasterCharge
- D. Diner's Club Discuss
- 4. What Elisha Otis invented?
Options- A. The brake used in modern elevators
- B. Jet Engine
- C. Turbine
- D. Hydraulic Crane Discuss
- 5. What invention was first installed at a Hartford, Connecticut bank in 1889?
Options- A. Automatic teller machine
- B. Time-lock safe
- C. Burglar alarm
- D. Pay telephone Discuss
- 6. When were blue jeans invented?
Options- A. 1900s
- B. 1860s
- C. 1870s
- D. 1850s Discuss
- 7. In which decade was the AEEE (now the IEEE) founded?
Options- A. 1850s
- B. 1880s
- C. 1930s
- D. 1950s Discuss
- 8. When were bar code scanners invented?
Options- A. 1940s
- B. 1950s
- C. 1970s
- D. 1960s Discuss
- 9. What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952?
Options- A. EKG
- B. Artificial heart valve
- C. Artificial heart
- D. Pacemaker Discuss
- 10. Which scientist discovered the radioactive element radium?
Options- A. Isaac Newton
- B. Albert Einstein
- C. Benjamin Franklin
- D. Marie Curie Discuss
Inventions problems
Search Results
Correct Answer: Kirkpatrick Macmillan
Correct Answer: Jethro Tull
Explanation:
It was invented around the early 1700's.
Correct Answer: Diner's Club
Explanation:
The card was invented by Frank McNamara and Ralph Schneider.
Correct Answer: The brake used in modern elevators
Explanation:
In 1853, American inventor Elisha Otis demonstrated a freight elevator equipped with a safety device to prevent falling in case a supporting cable should break. This increased public confidence in such devices. Otis established a company for manufacturing elevators and patented (1861) a steam elevator.
Many people think that he invented the elevator, but the truth is, he invented the elevator brake. He also invented the railway safety brake.
Correct Answer: Pay telephone
Explanation:
William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.
Correct Answer: 1850s
Explanation:
The first blue jeans were invented by tailor Levi Strauss, who invented tougher working pants for the miners of the California Gold Rush.
Correct Answer: 1880s
Explanation:
The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
Correct Answer: 1970s
Explanation:
The scanner reads the bar code label on something at a supermarket, and translates it into a number which the computer reads.
Correct Answer: Pacemaker
Explanation:
The pacemaker is an electrical device that regulates the heartbeat.
Correct Answer: Marie Curie
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