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The head scale of a screw gauge has 20...

The head scale of a screw gauge has 200 division . Its head advances by 1 mm for 2 complete rotations of its head . Find its pitch and least count.

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When circular scale of a screw gauge carrying 100 divisions is given four complete rotation, the head of the screw moves through 2mm. Calculate pitch and least count of the screw gauge.

The given diagram represents a screw gauge. The circular scale is divided into 50 divisions and the linear scale is divided into millimeters. If the screw advances by 1 mm when the circular scale makes 2 complete revolutions, find the least count of the instrument and the reading of the instrument in the figure. .

Knowledge Check

  • When circular scale of a srew gauge carrying 100 divisions is given four complete rotations, the head of the screw moves through 2mm . The pitch and least count of screw gauge are respectively.

    A
    `1mm` and `0.005mm`
    B
    `0.5mm` and `0.001mm`
    C
    `0.5mm` and `0.005mm`
    D
    `0.005mm` and `0.005mm`

  • The circular scale of a screw gauge has 200 divisions. When it is given 4 complete rotations, it moves through 2mm . The least count of the screw gauge is

    A
    `0.25xx10^(-2)cm`
    B
    `0.25xx10^(-3)cm`
    C
    `0.001cm`
    D
    `0.001mm`

  • The circular scale of a screw gauge has 50 divisions and pitch of 0.5 mm. Find the diameter of sphere. Main scale reading is 2 -

    A
    `1.2`
    B
    `1.25`
    C
    `2.207`
    D
    `2.25`

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    The divisions on the main scale of a screw gauge are 1 mm apart and the screw of the spindle advances by 5 main scale divisions when the spindle is given 5 complete rotations . How many divisions are to be provided on the circular scale for the least count of the instrument is to be 1 mu m ? What changes are requied of the number if divisions can be only 500 for the same least count?

    The circular scale of a screw gauge has 50 divisions and pitch of 0.5 mm. Find the diameter of sphere. Main scale reading is 2.

    the thimble of a screw gauge has 50 divisions .The spindle advances 1 mm when the screw is turned throught two revolutions . Then the pitch of the screw is "_______"

    On the head scale of any screw guage, there are 50 divisions marked. If the thread difference of the screw is 1 mm then least count of screw guage will be

    The meehanism behind nut and bolt arrangement also works for screw gauge. In case of nut and bolt mechanism, with rotation of bolt, it has translational movement also. In one complete rotation of bolt, tip of bolt moves by a linear distance equal to linear distance between two consecutive threads on the screw, known as pitch in case of screw gauge, the circular scale is divided in several parths. The ratio of pitch and total number of divisions on circular scale is known as least count. Spherometer is a device used to measure very small distances such as radius of curvature and thicness of thin plate. The screw gauge can be used to meaure diameter of a spherical sample. A screw gauge has 100 divisions on head scale and in 8 rotations distance covered is 8 mm. Least count of given screw gauge is

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