Question

the pitch of screw gauage is 1mm and there are 100 devisions on its circular head . while measuring the diameter of the wire the main scale reads 3mm and 55th devisions is in the line with the base line . find the diameter of the wire. assume that it is free from 0 error​

Answer 1

Answer:

L.C. of the screw gauge =

Numberofdivisionsoncircularscale

Pitch = 100

1 =0.01mm

Given : Main scale reading =1 mm

Circular scale reading =0.01×47=0.47

∴ Diameter of wire = Total reading =1.47mm=0.147cm

Curved surface area = π×dl=π×(0.147)(5.6)=2.586≈2.6cm

Explanation:

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