१. Seasoning of timber is essential to remove
- knots from timber
- sap from timber
- twisted fibre from timber
- roughness of timber
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२. If x is the smallest division on the main scale and n are the number of divisions on the vernier, then the least count of the vernier is
- x + n
- x – n
- x X n
- x/n
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३. When the tape of length (L) and weight (w) N/m is stretched at its ends with a pull (p) N, then the correction for sag required is
- wL/24 P
- w2L2/24 p2
- w3L3/24 P3
- w4L4/24 P4
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४. When the position of a point is to be located accurately by a perpendicular offset, the direction of perpendicular is set out by means of
- theodolite
- optical square
- dumpy level
- plainmeter
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५. The angle of intersection of the horizon glass and index glass in an optical square is
- 30ᵅ
- 45ᵅ
- 60ᵅ
- 75ᵅ
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