In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by

Changing the cardinal points, i.e. substituting N for S and E for W and vice-versa

In chain surveying field work is limited to

Linear measurements only

In chain surveying tie lines are primarily provided

To avoid long offsets from chain lines

In traverse computations, the sum of angles in closed figures equals which of the following? (Assume n=number of sides)

(n-2)*180

In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and the straight, and the angle between the polar ray and the straight, is

3/2

If the azimuth of line AB is 84 degrees what is the bearing?

NE

In levelling operation,

The line commences with a back sight and closes with a foresight.

If the whole circle bearing of a line is 270°, its reduced bearing is

W 90°

If the declination of the needle is 10° W

All

If the magnetic declination is properly adjusted, then when the compass needle reads zero degrees, the sighting arm points in what direction?

North

Is magnetic North a stationary fixed point on the globe?

No, magnetic North is constantly moving.

If the contour interval on a topo map is 10 meters, and one contour line is labeled 50 m

The adjacent contour line would represent 60 m in elevation

In the cross-section method of indirect contouring, the spacing of cross-sections depends upon i) contour interval ii) scale of plan iii) characteristics of ground The correct answer is

(i), (ii) and (iii)

If the staff is not held vertical at a levelling station, the reduced level calculated from the observation would be

Less than true R.L.

In the prismatic compass

The magnetic needle and graduated circle do not move with the box

If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167 º, the magnetic declination at that place is

Ordm; E

In an internal focussing type of telescope, the lens provided is

Concave

If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

M

In the double application of principle of reversion, the apparent error is

Four times the true error

If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will

Increase

If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to i) altitude bubble on index frame ii) altitude bubble on index frame if it is to be used as a level iii) altitude bubble on telescope iv) altitude bubble on telescope if it is to be used as a level The correct answer is

Both (i) and (iv)

If the length of a chain is found to be short on testing, it can be adjusted by

Straightening the links

If the true bearing of a line AB is 269 º 30', then the azimuth of the line AB is

90 º 30'

In the quadrantal bearing system, a whole circle bearing of 293 º 30' can be expressed as

NW 66 º 30'

In traverse computations, the sum of angles in closed figures equals which of the following? (number of sides is 6)

If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.

R/20

If θ is the slope of the ground and l is the measured distance, the correction is

2l sin2 θ/2

K

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