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. Lloyd Espenschied and Herman Affel

B. Nikola Tesla

C. Alexander Graham Bell

D. Michael Faraday

Answer: Option A

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 the planet Venus has phases similar to the Moon, supporting the heliocentric theory?

A. Johannes Kepler

B. Tycho Brahe

C. Nicolaus Copernicus

D. Galileo Galilei

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Correct Answer: Option D

Explanation:
Galileo Galilei observed the phases of Venus in 1610 using his telescope, confirming that it orbits the Sun.

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Question #2

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The invention of the common computing operating system layout known as Unix was co-developed by whom?

A. Linus Torvalds

B. Ken Thompson and Dennis Ritchie

C. Steve Jobs

D. Bill Gates

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Correct Answer: Option B

Explanation:
Thompson and Ritchie engineered Unix at Bell Labs in 1969, establishing foundational standards for multitasking operating systems.

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Question #3

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Who discovered that plant respiration consumes oxygen and releases carbon dioxide in the dark, complementing early photosynthesis concepts?

A. Antoine Lavoisier

B. Jan Ingenhousz

C. Joseph Priestley

D. Jean Senebier

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Correct Answer: Option B

Explanation:
Ingenhousz discovered that light exposure is necessary for plants to emit oxygen, whereas they release carbon dioxide in unlit conditions.

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