  ## 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

Options are :

• 20 mm
• 15 mm
• 10 mm
• 5 mm

Options are :

• 3/2
• 5
• 2
• 4
• 3

##### 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
• 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

Options are :

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

##### 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

##### 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

Options are :

• A
• C
• D
• B

##### 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

##### 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

Options are :

• 100 m
• 50 m
• 25 m
• 10 m

Options are :

• 30 cm
• 10 cm
• 20 cm
• 40 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

##### 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

##### 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

Options are :

• Declination
• Bearing
• Azimuth
• Dip

Options are :

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

##### Pantagraph is used for:

Options are :

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

##### 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

Options are :

• A
• D
• B
• C

Options are :

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

##### 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

Options are :

• E
• A
• C
• B
• 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

##### 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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