General Knowledge - Inventions

Exercise :: Inventions - Section 1

  • Inventions - Section 1
41. 

What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?

A. Telegraph
B. Radio
C. Television
D. Dishwasher

Answer: Option C

Explanation:

Zworykin invented both the tube (iconoscope) for transmission and the receiver (kinescope) in 1923 and 1924, respectively.

42. 

Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?

A. Banjo
B. Oboe
C. Clarinet
D. Harmonium

Answer: Option D

Explanation:

Ben also holds a lot of firsts - first U.S. ambassador, first political cartoonist, first American philosopher, organized the first fire department, and on and on.

43. 

What Thomas Davenport invented?

A. Screw propellor
B. Electric streetcar
C. Chesterfield
D. Sleeping (railway) car

Answer: Option B

Explanation:

Invented in 1834.

44. 

What Elisha Otis invented?

A. The brake used in modern elevators
B. Jet Engine
C. Turbine
D. Hydraulic Crane

Answer: Option A

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.


45. 

Where was the yo-yo invented?

A. France
B. United States
C. Philippines
D. England

Answer: Option C

Explanation:

The yo-yo was first used by hunters as weapons. They were wooden disks on strings. In the 1920s, a man from the U.S. named Donald Duncan made the yo-yo into a toy after he visited the Philippines.

46. 

For what does the world owe Almon Strowger a debt of gratitude?

A. Parking Meters
B. Vending Machines
C. Automatic Telephone Exchanges
D. Traffic Lights

Answer: Option C

Explanation:

He was an undertaker, and legend has it, he developed the automatic switch in 1889, to stop competitors from getting his work!

47. 

Who is often called the 'first African-American' inventor?

A. Bessie Blount
B. George Washington Carver
C. Benjamin Banneker
D. Elijah McCoy

Answer: Option C

Explanation:

Banneker was a member of the planning committee that designed Washington, DC along with Pierre L'Enfant. When L'Enfant was fired Banneker recreated the plans from memory.

48. 

The first hand glider was designed by...?

A. Leonardo DaVinci
B. The Wright brothers
C. Francis Rogallo
D. Galileo

Answer: Option A

Explanation:

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