## Surveying MCQ Practice Questions (Civil Engineering) Set 11

Options are :

• 90°
• 270°
• 120°
• 210°

Options are :

• 50 cm
• 25 cm
• 100 cm
• 125 cm
• 75 cm

##### One of the tacheometric constants is additive, the other constant, is:

Options are :

• Subtractive constant
• Indicative constant
• Multiplying constant
• Dividing constant

##### Hydrographic surveys deal with the mapping of:

Options are :

• Movement of clouds
• Canal system
• Heavenly bodies
• Large water bodies
• Mountaineous region

##### A back sight:

Options are :

• Taken on an inverted staff is treated as negative
• Is always taken on a point of known elevation or can be computed
• Is added to the known level to obtain the instrument height
• All the above

##### On a diagonal scale, it is possible to read up to:

Options are :

• Two dimensions
• Three dimensions
• One dimension
• Four dimensions

Options are :

• C
• A
• D
• B

##### One of the Lehmann's rules of plane tabling, is:

Options are :

• None of these
• When the instrument station is outside the circumscribing circle its location is always on the opposite side of the ray to the most distant point as the inter-section of the other two rays
• When looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray
• Location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances

Answer :Location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances

##### The most reliable method of plotting a theodolite traverse, is:

Options are :

• By plotting included angles and scaling off each traverse leg
• By consecutive co-ordinates of each station
• By the tangent method of plotting
• By independent co-ordinates of each station

Answer :By independent co-ordinates of each station

Options are :

• D
• A
• B
• C

##### Plotting of inaccessible points on a plane table, is done by:

Options are :

• Traversing
• Intersection
• None of these

##### 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:

Options are :

• R/15
• R/25
• R/20
• R/10

Options are :

• The vertical circle is usually continuous from 0° to 359°
• The readings increase when the telescope is elevated in the face left position
• The readings decrease when the telescope is elevated in the face right position
• All the above

##### For true difference in elevations between two points A and B, the level must be set up:

Options are :

• at any point between A and B
• near the point A
• near the point B
• at the exact mid point of A and B

Answer :at the exact mid point of A and B

##### The latitude of a traverse leg is obtained by multiplying its length by:

Options are :

• Cosine of its reduced bearing
• Cosecant of its reduced bearing
• Tangent of its reduced bearing
• Sign of its reduced bearing

Answer :Cosine of its reduced bearing

##### The real image of an object formed by the objective, must lie:

Options are :

• in the plane of cross hairs
• at the optical centre of the eye-piece
• at the centre of the telescope
• anywhere inside the telescope

Answer :in the plane of cross hairs

##### When the bubble of the level tube of a level, remains central:

Options are :

• Axis of the telescope is horizontal
• Geometrical axis of the telescope is horizontal
• Line of sight is horizontal
• Line of collimation is horizontal

Answer :Line of sight is horizontal

Options are :

• 20°
• 30°
• 60°
• 45°
• 90°

Options are :

• Not reliable
• Good
• Unique

##### Metric chains are generally available in:

Options are :

• 15 m and 20 m length
• 20 m and 30 m length
• 25 m and 100 m length
• 10 m and 20 m length

Answer :20 m and 30 m length

##### Whole circle bearing of a line is preferred to a quadrantal bearing merely because:

Options are :

• Its trigonometrical values may be extracted from ordinary tables easily
• Bearing is completely specified by an angle
• Sign of the correction of magnetic declination is different in different quadrants
• Bearing is not completely specified by an angle

Answer :Bearing is completely specified by an angle

##### Pick up the correct statement from the following:

Options are :

• The imaginary lines which pass through points at which the magnetic declinations are equal at a given time are called isogonic lines
• The horizontal angle between magnetic meridian and true meridian at a place is called magnetic declination or variance of the compass
• The isogonic lines through places at which the declination is zero are termed agonic lines
• All the above

##### In a precision traverse, included angles are measured by setting the vernier:

Options are :

• All the above
• Some where near zero and reading both verniers on back station
• To read zero exactly on back station
• To read 5° exactly on back station

Answer :Some where near zero and reading both verniers on back station

##### While surveying a plot of land by plane tabling, the field observations:

Options are :

• And recorded in field books to be plotted later
• All the above
• And plotting do not proceed simultaneously
• And plotting proceed simultaneously

##### Ranging is an operation of:

Options are :

• Reconnaissance
• Establishing intermediate points between terminals
• Determination of slope
• Judging the distance

Answer :Establishing intermediate points between terminals

##### An internal focussing type surveying telescope, may be focussed by the movement of:

Options are :

• Convex-lens in the telescope
• Concave lens in the telescope
• Plano-convex lens in the telescope
• Objective glass of the telescope

Answer :Concave lens in the telescope

##### The rise and fall method of reduction of levels, provides a check on:

Options are :

• Back sights
• All of these
• Fore sights
• Intermediate sights

##### In horizontal angles, the error due to imperfect levelling of the plate bubble is:

Options are :

• Large for long sights
• Less for steeply inclined sights
• Large when sights are nearly level
• Large for steeply inclined sights

Answer :Large for steeply inclined sights

Options are :

• A
• B
• D
• C

##### In setting up a plane table at any station:

Options are :

• Orientation is done first
• Levelling is done first
• Centering is done first
• Both levelling and centering are done simultaneously

Answer :Both levelling and centering are done simultaneously

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