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प्रश्न
State the formula for calculating the pitch of screw.
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उत्तर
Pitch of screw
= `"Distance moved by thimble on main scale"/"Number of rotations of thimble"`
E.g. If 5 mm is the distance moved by the thimble on the main scale in 5 rotations then,
Pitch = `(5 "mm")/5` = 1 mm
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संबंधित प्रश्न
A vernier callipers has a zero error of + 0.06 cm. Draw a neat labelled diagram to represent it.
Explain the terms : Pitch .
How are they determined?
Draw a neat and labelled diagram of a screw gauge.
Name its main parts and state their functions.
Describe the procedure to measure the diameter of a wire with the help of a screw gauge.
The diameter of a thin wire can be measured by
A vernier callipers has its main scale graduated in mm and 10 divisions on its vernier scale are equal in length to 9 mm. When the two jaws are in contact, the zero of the vernier scale is ahead of the zero of the main scale and the 3rd division of the vernier
scale coincides with a main scale division.
Find : (i) The least count and
(ii) The zero error of the vernier callipers.
A screw gauge has 50 divisions on its circular scale and its screw moves by 1 mm on turning it by two revolutions. When the flat end of the screw is in contact with the stud, the zero of the circular scale lies below the base line and 4th division of the circular scale is in line with the base line. Find
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(ii) The least count and
(iii) The zero error of the screw gauge
A micrometre screw gauge having a positive zero error of 5 divisions is used to measure diameter of a wire, when reading on the main scale is 3rd division and the 48th circular scale division coincides with baseline. If the micrometer has 10 divisions to a centimetre on the main scale and 100 divisions on a circular scale, calculate
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- Least count of screw
- Observed diameter
- Corrected diameter.
Name the measuring employed to measure the diameter of a needle.
