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प्रश्न
What is the backlash error?
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उत्तर
Due to constant use, there is space for the play of screw gauge but gradually this space increases with the use or wear and tear so that when the screw is moved by rotating it in some direction, it slips in the nut and does not cover any linear distance for some rotation of the screw head. The error due to this is known as backlash error.
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संबंधित प्रश्न
In the vernier callipers, there are 10 divisions on the vernier scale and 1 cm on the main scale is divided into 10 parts. While measuring the length, the zero of the vernier lies just ahead of the 1.8 cm mark and the 4th division of vernier coincides with a main scale division.
(a) Find the length.
(b) If zero error of vernier callipers is -0.02 cm,
What is the correct length ?
How can the least count of a screw gauge be decreased?
State the formula for determining least count for a vernier callipers.
Which part of vernier callipers is used to measure the internal diameter of a hollow cylinder?
What do you understand by the following term as applied to micrometre screw gauge?
Thimble
Find the volume of a book of length 25 cm, breadth 18 cm and height 2 cm in m3.
How the backlash error is avoided?
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
