The invention of the common mechanical device known as the marine depth tracker Echo Sounder was patented by whom? MCQ with Answer and Explanation

Question
The invention of the common mechanical device known as the marine depth tracker Echo Sounder was patented by whom?
A. Heinrich Hertz
B. Guglielmo Marconi
C. Robert Watson-Watt
D. Alexander Behm
Answer: Option D
Solution (By JKSSB Mock Tests)
German physicist Alexander Behm patented the sonic echo sounder depth locator apparatus in 1912 to prevent marine collisions.
This question belongs to: Static General Knowledge Inventions and Discoveries
Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Inventions and Discoveries Questions

Question #1
The invention of the common mechanical transport mechanism known as the bicycle chain drive system was optimized by whom?
A. Harry John Lawson and John Kemp Starley
B. Karl Benz
C. Henry Ford
D. Wright Brothers
Discuss
Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option A

Explanation:
Starley engineered the 'Rover Safety Bicycle' in 1885, featuring equal-sized wheels and rear-wheel chain driving mechanisms.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
The electron was discovered in 1897 by which of the following physicists?
A. Ernest Rutherford
B. John Dalton
C. J.J. Thomson
D. James Chadwick
Discuss
Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option C

Explanation:
J.J. Thomson discovered the electron through his experiments with cathode ray tubes in 1897.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The invention of the mechanical calculating machine named 'Pascaline' in 1642 was completed by whom?
A. Charles Babbage
B. Blaise Pascal
C. René Descartes
D. Gottfried Wilhelm Leibniz
Discuss
Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option B

Explanation:
Blaise Pascal invented the Pascaline to assist his father, a tax commissioner, in performing arithmetic addition and subtraction.
This question belongs to: Static General Knowledge Inventions and Discoveries
Explore All Inventions and Discoveries MCQs
Today's Top Topics
First in India 383 International Organizations 387 States and Capitals of India 256 UNESCO World Heritage Sites 189 Folk Dances of India 306
Explore Subjects
Maths 5575 Geography GK 6121 Economy GK 2220 History GK 3374 Accountancy and Statistics 3179
Practice Mix
The 'Deccani' style of painting developed in:
He ___ be very upset; he's not talking to anyone.
Which cloud type appears as thin, feathery streaks?
Two numbers are in the ratio 4:8 and their sum is 512. Find the numbers.
By the time you return, I ________ the house.