GK - Inventions and Discoveries
41.
George Westinghouse invented
Answer
George Westinghouse Jr. was an American entrepreneur and engineer based in Pennsylvania who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19.
Answer :
Option DExplanation :
George Westinghouse Jr. was an American entrepreneur and engineer based in Pennsylvania who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19.
42.
Air conditioner was discovered by
Answer
The creation of the modern electrical air conditioning unit and industry is credited to the American inventor Willis H. Carrier. The first air conditioner, designed and built in Buffalo Forge Company, New York by Carrier, began working on 17 July 1902.
Answer :
Option CExplanation :
The creation of the modern electrical air conditioning unit and industry is credited to the American inventor Willis H. Carrier. The first air conditioner, designed and built in Buffalo Forge Company, New York by Carrier, began working on 17 July 1902.
43.
Lift was invented by
Answer
The man who solved the elevator safety problem, making skyscrapers possible, was Elisha Graves Otis, who is generally known as the inventor of the modern elevator.
Answer :
Option AExplanation :
The man who solved the elevator safety problem, making skyscrapers possible, was Elisha Graves Otis, who is generally known as the inventor of the modern elevator.
44.
Revolver was discovered by
Answer
Samuel Colt submitted a British patent for his revolver in 1835 and an American patent on February 25, 1836 for a Revolving gun, and made the first production model on March 5 of that year.
Answer :
Option AExplanation :
Samuel Colt submitted a British patent for his revolver in 1835 and an American patent on February 25, 1836 for a Revolving gun, and made the first production model on March 5 of that year.
45.
Hovercraft, the vehicle which can travel across land and water was invented by
Answer
Sir Christopher Cockerell, invented the hovercraft, the vehicle which can travel across land or water on a cushion of air.
Answer :
Option DExplanation :
Sir Christopher Cockerell, invented the hovercraft, the vehicle which can travel across land or water on a cushion of air.
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