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- Question
What Elisha Otis invented?
Options- A. The brake used in modern elevators
- B. Jet Engine
- C. Turbine
- D. Hydraulic Crane
- Correct Answer
- The brake used in modern elevators
ExplanationIn 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.
More questions
- 1. Who invented Dynamite?
Options- A. Sir Alexander Graham Bell
- B. Benjamin Franklin
- C. Thomas Alva Edison
- D. Alfred B. Nobel Discuss
Correct Answer: Alfred B. Nobel
- 2. Large astronomical telescopes always use as objective
Options- A. lens
- B. mirror
- C. combinations of lenses
- D. None of the above Discuss
Correct Answer: combinations of lenses
- 3. Who suggested that most of the mass of the atom is located in the nucleus?
Options- A. Thompson
- B. Bohr
- C. Rutherford
- D. Einstein Discuss
Correct Answer: Rutherford
- 4. The most explosive type of volcano is
Options- A. the caldera
- B. a cinder cone
- C. basalt plateau
- D. shield volcanoes Discuss
Correct Answer: the caldera
- 5. The first black American to win the Nobel Prize for literature is
Options- A. Aurthe Ashe
- B. Martin Luther King
- C. Toni Morrison
- D. Nelson Mandela Discuss
Correct Answer: Toni Morrison
- 6. The first person of Indian origin to be appointed as a judge in U.S. is
Options- A. P.A.Sangma
- B. Basava Rajeswari
- C. R.C.Bharadwaj
- D. Ridhi Desai Discuss
Correct Answer: Ridhi Desai
- 7. Which of the following food grain crops occupies the largest part of the cropped area in India?
Options- A. Barley and maize
- B. Jowar and bajra
- C. Rice
- D. Wheat Discuss
Correct Answer: Rice
- 8. The 13th Asian Games were held in
Options- A. China
- B. Bangok
- C. Manila
- D. Singapore Discuss
Correct Answer: Bangok
- 9. Which of the following is correctly matched?
Options- A. Nehru Trophy - Table Tennis
- B. B.C. Roy Trophy - Lawn Tennis
- C. Holkar Trophy - Bridge
- D. Ruia Trophy - Kabbadi Discuss
Correct Answer: Holkar Trophy - Bridge
Explanation:
Nehru Trophy - BOAT RACE
B.C. Roy Trophy - FIFA
Holkar Trophy - Bridge
Ruia Trophy - Bridge- 10. What do we call a network whose elements may be separated by some distance? It usually involves two or more small networks and dedicated high-speed telephone lines.
Options- A. URL (Universal Resource Locator)
- B. LAN (Local Area Network)
- C. WAN (Wide Area Network)
- D. World Wide Web Discuss
Correct Answer: WAN (Wide Area Network)
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