In case of a direct vernier scale graduations increase in opposite direction in

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Question
In case of a direct vernier scale
Options
A. graduations increase in opposite direction in which graduations of the main scale increase
B. smallest division is longer than smallest division of the main scale
C. graduations increase in the same direction in which graduations of the main scale increase
D. none of these.

Correct Answer

graduations increase in the same direction in which graduations of the main scale increase

Surveying problems

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1. Determining the difference in elevation between two points on the surface of the earth, is known as
Options
A. levelling
B. simple levelling
C. differential levelling
D. longitudinal levelling.

3. A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads
Options
A. azimuth of the forward line
B. bearing of the. forward line
C. back bearing of the forward line
D. equal to 360�-azimuth of the forward line.

5. The lens equation is applicable
Options
A. when the thickness of the lens is small
B. only to conjugate distances along the principal axis
C. the computed quantities are accurate enough for geometrical optics of simple distances
D. all the above.

8. In case of a double line river, contours are
Options
A. stopped at the banks of the river
B. stopped at the edge of the river
C. drawn across the water
D. drawn by parabolic curves having their vertex at the centre of the water.

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