Surveying MCQ Practice Questions (Civil Engineering) Set 8

The power of a lens:


Options are :

  • Is reciprocal of its focal length
  • Is negative if it is a concave lens
  • Is measured in diopter
  • Is positive if it is a convex lens

Answer :Is measured in diopter

Surveying MCQ Practice Questions (Civil Engineering) Set 9

The minimum range for sliding the focusing lens in the internal focusing telescope for focusing at all distances beyond 4 m is:


Options are :

  • 20 mm
  • 15 mm
  • 10 mm
  • 5 mm

Answer :20 mm

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:


Options are :

  • 3/2
  • 5
  • 2
  • 4
  • 3

Answer :3/2

The true meridian of a place is the line in which earth's surface is intersected by a plane through:


Options are :

  • North and south geographical poles
  • East and west points
  • Zenith and nadir points
  • North and south magnetic poles

Answer :North and south geographical poles

The distance between steps for measuring down hill to obtain better accuracy:


Options are :

  • Decreases with increase of slope
  • Decreases with decrease of slope
  • Decreases with decrease of weight of the chain
  • Increases with increase of slope

Answer :Decreases with increase of slope

The bearings of two traverse legs AB and BC are N52° 45' E and N34° 30' E respectively. The deflection angle is:


Options are :

  • 18° 15' N
  • 18° 15' W
  • 18° 15' E
  • 18° 15' L
  • 18° 15' R

Answer :18° 15' L

Diurnal variation of magnetic declination is:


Options are :

  • Less in summer than in winter
  • Same at all latitudes and during different months
  • Less at equator than nearer the poles
  • Greater at equator than nearer the poles

Answer :Less at equator than nearer the poles

Surveying MCQ Practice Questions (Civil Engineering) Set 1

Systematic errors are those errors:


Options are :

  • None of these
  • Whose effects are cumulative and can be eliminated
  • Whose character is understood
  • Which cannot be recognised

Answer :Whose effects are cumulative and can be eliminated

The distance between the point of intersection of an up grade + g1% and downgrade g2% and the highest point of the vertical curve of length L, is:


A.


B.


C.


D.


Options are :

  • A
  • C
  • D
  • B

Answer :D

The total change in level along the line is equal to total back sights:


Options are :

  • All the above
  • Minus total fore sights
  • The reduced level of last point minus reduced level of the first point
  • The total rises minus total falls

Answer :All the above

Surveying MCQ Practice Questions (Civil Engineering) Set 10

Pick up the correct statement from the following:


Options are :

  • When the vertical circle is to the right of the telescope during observation, it is called to be in right face
  • When the vertical circle is to the left of the telescope during observation, it is called to be in left face
  • All the above
  • The theodolite in which telescope can be rotated in vertical plane is called a transmit

Answer :All the above

Surveying MCQ Practice Questions (Civil Engineering) Set 11

The radius of curvature of the arc of the bubble tube is generally kept:


Options are :

  • 100 m
  • 50 m
  • 25 m
  • 10 m

Answer :100 m

Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is:


Options are :

  • 30 cm
  • 10 cm
  • 20 cm
  • 40 cm

Answer :30 cm

True meridians are generally preferred to magnetic meridians because:


Options are :

  • These converge to a point
  • These change due to change in time
  • None of these
  • These remain constant

Answer :These remain constant

Surveying MCQ Practice Questions (Civil Engineering) Set 13

In levelling operation:


Options are :

  • If second reading is more than first, it represents a rise
  • None of these
  • If first reading is more than second, it represents a rise
  • If first reading is less than second, it represents a fall
  • If second reading is less than first, it represents a fall

Answer :If first reading is more than second, it represents a rise If first reading is less than second, it represents a fall

The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every:


Options are :

  • None of these
  • 200 sq. km of area
  • 150 sq. km of area
  • 100 sq. km of area

Answer :200 sq. km of area

The accuracy of measurement in chain surveying, does not depend upon:


Options are :

  • Scale of the plotting
  • Length of the offset
  • Importance of the features
  • General layout of the chain lines

Answer :General layout of the chain lines

Surveying MCQ Practice Questions (Civil Engineering) Set 3

The intercept of a staff:


Options are :

  • is minimum if the staff is held truly normal to the line of sight
  • is maximum if the staff is held truly normal to the line of sight
  • decreases if the staff is tilted away from normal
  • increases if the staff is tilted towards normal

Answer :is minimum if the staff is held truly normal to the line of sight

Pick up the correct specification of Ramsden eyepiece from the following:


Options are :

  • The curved surfaces of plano-convex lenses face each other
  • All the above
  • The two lenses are separated by a distance equal to 2/3 of the focal length of either lens
  • The distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam
  • It consists of two equal piano convex lenses

Answer :All the above

The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known:


Options are :

  • Declination
  • Bearing
  • Azimuth
  • Dip

Answer :Dip

Surveying MCQ Practice Questions (Civil Engineering) Set 4

For a curve of radius 100 m and normal chord 10 m, the Rankine's deflection angle, is:


Options are :

  • 0°35'.95
  • 1°25'.53
  • 1°35'.95
  • 0°25'.95
  • 2°51'.53

Answer :2°51'.53

Pantagraph is used for:


Options are :

  • Measuring areas
  • Enlarging or reducing plans
  • Setting out right angles
  • Measuring distances

Answer :Enlarging or reducing plans

The diaphragm of a stadia theodolite is fitted with two additional:


Options are :

  • None of these
  • Vertical hairs
  • Horizontal hairs
  • Horizontal and two vertical hairs

Answer :Horizontal hairs

Surveying MCQ Practice Questions (Civil Engineering) Set 5

If ? is the vertical angle of an inclined sight, ? is the angle of tilt of the staff, the error:


A.


B.


C.


D.

None of these


Options are :

  • A
  • D
  • B
  • C

Answer :A

Probable systematic error in precise levelling as recommended by International Geodetic Association should not exceed
(where k is in kilometers)


Options are :

  • 0.2 ?k mm
  • ± 0.2 ?k mm
  • ± 0.1 ?k mm
  • ± 0.1 ?k

Answer :0.2 ?k mm

The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is:


Options are :

  • 102°
  • 45°
  • 78°
  • None of these

Answer :102°

Surveying MCQ Practice Questions (Civil Engineering) Set 6

If the area calculated form the plan plotted with measurements by an erroneous chain, accurate area of the plan is:


A.


B.


C.


D.


E.

None of the above


Options are :

  • E
  • A
  • C
  • B
  • D

Answer :D

The 'fix' of a plane table station with three known points, is bad if the plane table station lies:


Options are :

  • None of these
  • outside the great triangle
  • on the circumference of the circumscribing circle
  • in the great triangle

Answer :on the circumference of the circumscribing circle

An ideal vertical curve to join two gradients, is:


Options are :

  • Parabolic
  • None of these
  • Elliptical
  • Hyperbolic
  • Circular

Answer :Parabolic

Two hill tops A and B 20 km apart are intervened by a third top C. If the top most contour of the three hill tops are of the same value, state whether the line of sight AB:


Options are :

  • Grazes the hill top C
  • None of these
  • Passes below the hill top C
  • Passes clear of hill top C

Answer :Passes below the hill top C

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