The invention of the high-velocity steam engine turbine 'De Laval' type with convergent-divergent nozzles was done by whom? MCQ with Answer and Explanation

Question

The invention of the high-velocity steam engine turbine 'De Laval' type with convergent-divergent nozzles was done by whom?

A. Gustaf de Laval

B. Thomas Newcomen

C. Charles Parsons

D. James Watt

Answer: Option A

Solution (By JKSSB Mock Tests)

Gustaf de Laval developed the specialized nozzle configuration that accelerates steam to supersonic speeds, improving kinetic transfer.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The invention of the common industrial building safety device known as the wire rope cable line was patented by whom?

A. Henry Bessemer

B. Wilhelm Albert

C. Elisha Otis

D. George Stephenson

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Correct Answer: Option B

Explanation:
German mining engineer Wilhelm Albert fabricated twisted iron wire ropes in 1834 to replace hemp mine hoist chains.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who invented the first practical, safe, non-flickering miner's safety lamp alongside Humphry Davy?

A. George Stephenson

B. Robert Fulton

C. James Watt

D. Thomas Newcomen

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Correct Answer: Option A

Explanation:
George Stephenson independently invented a similar safety lamp (Geordie lamp) in 1815, around the exact same time as Davy.

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Question #3

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The invention of the highly accurate atomic clock configuration using cesium resonance was completed by whom?

A. Louis Essen and Jack Parry

B. Albert Einstein

C. Isidor Isaac Rabi

D. Lord Kelvin

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Correct Answer: Option A

Explanation:
Essen and Parry constructed the first highly functional stable cesium atomic clock standard in 1955 at the National Physical Laboratory.

This question belongs to: Static General Knowledge Inventions and Discoveries

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