Civil Engineering All Engineering Career
Question 91
The working from whole to the part is done in surveying in order to ensure that ?
The correct answer is errors and mistakes of one portion do not affect the remaining portion.
Working from the whole to the part in surveying ensures that errors and mistakes in one portion of the survey do not impact the remaining portions. This approach helps in maintaining accuracy and consistency throughout the survey.
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Question 92
The value of additive constant for the tachometer varies from ?
The value of the additive constant for a tachometer is: 30 to 45 cm
The additive constant (C) in tachometer is the sum of the focal length of the objective lens (f) and the distance between the optical center of the objective lens and the instrument's center (d).
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Question 93
The reduced level of a point on the ground is called ?
The correct answer is spot height.
The reduced level of a point on the ground, which represents its elevation relative to a reference datum, is referred to as the spot height.
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Question 94
The height of instrument is equal to ?
The correct answer is reduced level of bench mark + back sight.
The height of the instrument in leveling is calculated by adding the reduced level of the benchmark (or a known point) to the back sight reading. This gives the height of the instrument above the benchmark.
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Question 95
In a quadrantal system, the bearing of a line is measured ?
The correct answer is clockwise or anticlockwise from the north or south whichever is nearer the line towards east or west.
In a quadrantal system, bearings are measured either clockwise or anticlockwise from the north or south, whichever is nearer to the line, towards the east or west.
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Question 96
The angle between the reflecting surfaces of a prism square is ?
The angle between the reflecting surfaces of a prism square is:
45°
A prism square is specifically designed with a 45-degree angle between its reflecting surfaces to achieve its function of deflecting a line of sight through a right angle.
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Question 97
A deflection angle is ?
The correct answer is equal to the difference between the angle of intersection and 180°.
A deflection angle is calculated as the difference between the angle of intersection and 180°, reflecting how much the direction of the line has deviated from a straight line.
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Question 98
Which of the following statement is correct ?
The correct answer is all of the above.
Each of the statements is correct:
- Indirect ranging is used when the ends of a line are not visible due to high ground.
- The chainman at the forward end of the chain is called the leader.
- The line ranger is used for fixing intermediate points on the chain lines.
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Question 99
In locating the details of an object whose direct measurement is not obstruction, the method used is possible due to ?
The correct answer: by angle from one station and distance from the other station
Using angles from one station and distance from another station is another valid method for locating details of an object, especially when direct measurement is obstructed.
This method involves measuring angles from one station and distances from a separate, known location to triangulate the position of the object.
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Question 100
The spacing of cross-sections in a hilly country is usually ?
The correct answer is 20 m.
In hilly or mountainous areas, the spacing of cross-sections is typically set at 20 meters to provide a detailed and accurate representation of the terrain. This closer spacing helps capture the variations in elevation more precisely.