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प्रश्न
What do you understand by the following term as applied to micrometre screw gauge?
Sleeve scale
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उत्तर
It is also known as the main scale. A reference line or baseline graduated in mm, drawn on the sleeve cylinder, parallel to the axis of nut is known as a sleeve scale.
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संबंधित प्रश्न
State the purpose of ratchet in a screw gauge.
The pitch of a screw gauge is 0.5 mm and the head scale is divided in 100 parts. What is the least count of a screw gauge?
State the correction if the negative error is 7 divisions when the least count is 0.01 cm.
A micrometre screw gauge has a negative zero error of 8 divisions. While measuring the diameter of a wire the reading on the main scale is 3 divisions and the 24th circular scale division coincides with baseline.
If the number of divisions on the main scale are 20 to a centimetre and circular scale has 50 divisions, calculate
- pitch
- observed diameter.
- least count
- corrected diameter.
What do you understand by the following term as applied to screw gauge?
Positive zero error
What is the least count in the case of the following instrument?
Stopwatch
Consider the following case where the zero of vernier scale and the zero of the main scale are clearly seen. If L.C. of the vernier calipers is 0.01 cm, write the zero error and zero correction of the following.
The following diagrams (Fig. 5) show the use of a vernier caliper under three different situations. Study the diagrams carefully and note down the vernier readings in each case.
(a) Measuring the diameter of the rod
(b) Measuring Internal diameter of a cavity
(c) Measuring depth of a cavity
How will you find the Zero Error of Vernier Caliper? Explain.
