Science & Technology

What is a Cryogenic Engine?

IAS Mains General Studies Sample Answers

Significance in Space Programme


Cryogenic means low temperature. It refers to technology of sub zero temperatures and cryogenic engines use liquid oxygen as the oxidizer and liquid hydrogen as the fuel. Oxygen can be kept in liquid state below – 183°

Explain the Components of Robots

IAS Mains General Studies Sample Answers

Components of Robots


Kinematic Chain (similar to the skeleton of human body) is the structure of a robot and is mostly mechanical. It is formed of links (its bones), actuators (its muscles) and joints which can allow one or more degrees of freedom.

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Civil Services Prelims Study Materials

Test Series for Civil Services Prelims

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