The invention of the common electrical structural device known as the coaxial cable was patented in its modern form by whom? MCQ with Answer and Explanation

Question

The invention of the common electrical structural device known as the coaxial cable was patented in its modern form by whom?

A. Nikola Tesla

B. Alexander Graham Bell

C. Lloyd Espenschied and Herman Affel

D. Michael Faraday

Answer: Option C

Solution (By JKSSB Mock Tests)

Espenschied and Affel engineered the concentric dual-conductor configuration at Bell Labs in 1929 for high-frequency radio networks.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that electrical currents passing through solutions break down compounds chemically, formalizing the Laws of Electrolysis?

A. Humphry Davy

B. Michael Faraday

C. Alessandro Volta

D. Svante Arrhenius

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Correct Answer: Option B

Explanation:
Michael Faraday established the quantitative laws of electrolysis, introducing terms like anode, cathode, and ion.

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Question #2

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The invention of the iconic acoustic phonograph recording flat disc format (Gramophone) was developed by whom?

A. Alexander Graham Bell

B. Thomas Edison

C. Emile Berliner

D. Nikola Tesla

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Correct Answer: Option C

Explanation:
Emile Berliner introduced flat zinc discs with lateral groove tracking in 1887, outperforming Edison's hollow wax storage cylinders.

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Question #3

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Who discovered the first known antibiotic substance produced by soil actinomycetes, Actinomycin?

A. Alexander Fleming

B. Robert Koch

C. Selman Waksman

D. Louis Pasteur

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Correct Answer: Option C

Explanation:
Selman Waksman and his student H. Boyd Woodruff isolated actinomycin in 1940, sparking targeted soil microbe screening programs.

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