The invention of the common mechanical cash register to prevent employee theft was patented by whom in 1879? MCQ with Answer and Explanation
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Question #1
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The invention of the common automotive safety equipment known as the three-point seatbelt was patented by whom?
Correct Answer: Option B
Explanation:
Swedish engineer Nils Bohlin developed the modern cross-lap safety harness configuration in 1959, saving countless lives across traffic boundaries.
Swedish engineer Nils Bohlin developed the modern cross-lap safety harness configuration in 1959, saving countless lives across traffic boundaries.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered the primary mathematical law detailing electric current branching paths, known as the junction rule?
Correct Answer: Option A
Explanation:
Kirchhoff's Junction Rule states that the total current entering any electrical network node precisely matches the total current exiting it.
Kirchhoff's Junction Rule states that the total current entering any electrical network node precisely matches the total current exiting it.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered that atomic particle configurations include a heavy uncharged component, predicting the Neutron before its physical extraction?
Correct Answer: Option C
Explanation:
Rutherford postulated the existence of a tightly bound proton-electron neutral pair in 1920, which Chadwick later isolated as the neutron.
Rutherford postulated the existence of a tightly bound proton-electron neutral pair in 1920, which Chadwick later isolated as the neutron.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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