Who invented the elevator? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.
Who invented the elevator?
In the early 19th century elevators existed but they were used mostly for freight. The hoisting drums of the elevators were turned by steam power. But elevators became popular only after Elisha Graves Otis invented a safety device to prevent the rope holding the elevator from snapping. The modern-day electric elevator was invented by Werner von Siemens, a German engineer.
Related posts:
What is a hormone? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 1...
General Knowledge
When was brick first used? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, ...
General Knowledge
Were there libraries in ancient times? Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
Do you know “Vedapuri”.
Do you know
Where does digestion begin? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge
Do you know “Braille printer made of LEGO blocks”.
Do you know
Why do our ears ring sometimes? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9,...
General Knowledge
GK Question "How The Engine of Jet Works?" general knowledge book English 2021 current affairs quiz ...
General Knowledge
GK Question "How Big Is Our Universe?" General Knowledge for Class 7, 8, 9, 10, 12 Students Examinat...
General Knowledge
What is yeast? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 St...
General Knowledge
How does a fax machine work? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10...
General Knowledge
GK Question "What Is The Largest Snake In The World?" general knowledge book English 2021 current af...
General Knowledge
How was Hawaii formed? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
GK Question "What Do You Know About Penicillin?" general knowledge book English 2021 current affairs...
General Knowledge
Who was Confucius? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 1...
General Knowledge
What are barnacles? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and ...
General Knowledge
GK Question "Why is Lightning Followed By Thunder?" general knowledge book English 2021 current affa...
General Knowledge
What is static electricity? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge
What is the difference between warm-blooded and cold-blooded animals?Complete General Knowledge Ques...
General Knowledge
Who were the Mayans? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge