Surveying 5
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1) Question.
The length of the tangent of a curve of radius R and angle of deflection A is given by
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2) Question.
If the degree of a curve is 1°, then the radius of the curve is equal to
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3) Question.
A curve tangential to four straight lines and consisting of arcs of different radii is known as
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4) Question.
Different grades are joined together by a
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5) Question.
Overturning of vehicles on a curve can be avoided by using
Answer.Overturning of vehicles on a curve can be avoided by using a transition curve and by increasing the superelevation. A transition curve gradually changes the road's curvature from a straight path to a circular curve, which reduces the sudden buildup of centrifugal force. Superelevation, or banking, is the tilting of the road's outer edge to counterbalance this force and help keep the vehicle stable.Transition curve- A transition curve (or spiral curve) is a gradual curve placed between a straight road and a circular curve.
- It allows the vehicle to gradually change direction, which is more comfortable and safer.
- It provides the necessary length to introduce superelevation smoothly and progressively, rather than abruptly.
Superelevation- Superelevation is the practice of tilting the road surface on a curve so that the outer edge is higher than the inner edge.
- This tilting creates a component of gravity that counteracts the outward centrifugal force, helping to keep the vehicle from skidding or overturning.
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6) Question.
If the spacing of cross hairs in a stadia diaphragm of a tacheameter is 1.2 mm and the focal length of object glass is 24 cm then the multiplying constant of the tacheameter is
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7) Question.
If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is
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8) Question.
For a tacheometer, the additive and multiplying constants are respectively
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9) Question.
If the intercept on a vertical staffs observed as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is
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10) Question.
If the staff is held normal to the line of sight and the angle of elevation and depression are kept same, the the horizontal distance between instrument station and staff station computed by observation will be
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