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How many degrees of freedom is in the robotic arm?

(a) 1

(b) 2

(c) 3

(d) 4

This question was addressed to me at a job interview.

I'm obligated to ask this question of Computers in Metrology in chapter Measuring Machines & Total Quality Management of Engineering Metrology

1 Answer

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Right option is (d) 4

The best I can explain: A robot arm has four degrees of freedom, the motions are three rectangular linear motions and wrist motion. It is brought for the inspection near the equipment while being machined.

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