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survey free mcqs

Surveying | MCQ – 06 | 20 MCQs

Posted on February 8, 2022March 17, 2023 By Civil Vedant

Q.1) The difference between the most probable value of a quantity and its observed value is :

A) True value

B) Weighted observation

C) Conditional error

D) Residual error

Answer

Option (D)

Q.2) ‘Ranging’ is the process of :

A) Fixing ranging rods on the extremities of the area

B) Aligning the chain in a straight line between two extremities

C) Taking offsets from a chain line

D) Chaining over a range of mountains

Answer

Option (B)

Q.3) For a well-conditioned triangle, no angle should be less than :

A) 200

B) 300

C) 450

D) 600

Answer

Option (B)

Q.4) The allowable length of an offset depends upon the :

A) Degree of accuracy required

B) Method of setting out the perpendiculars and nature of ground

C) Scale of plotting

D) All of the above

Answer

Option (D)

Q.5) Cross staff is an instrument used for :

A) Measuring approximate horizontal angles

B) Setting out right angles

C) Measuring bearings of the lines

D) None of the above

Answer

Option (B)

Q.6) The maximum tolerance in a 20m chain is :

A) ±2mm

B) ±3mm

C) ±5mm

D) ±8mm

Answer

Option (C)

Q.7) The process of turning the telescope about the vertical axis in horizontal plane is known as :

A) Transiting

B) Reversing

C) Plunging

D) Swinging

Answer

Option (D)

Q.8) The error due to eccentricity of inner and outer axes can be eliminated by :

A) Reading both verniers and taking the mean of two

B) Taking both face observations and taking the mean of two

C) Double sighting

D) Taking mean of several readings distributed over different portions of the graduated circle

Answer

Option (A)

Q.9) Which of the following errors can be neutralised  by setting the level midway between the two stations?

A) Error due to curvature only

B) Error due to refraction only

C) Error due to both curvature and refraction

D) None of the above

Answer

Option (C)

Q.10) Refraction correction :

A) Completely eliminates curvature correction

B) Partially eliminates curvature correction

C) Adds to the curvature correction

D) Has no effect on curvature correction

Answer

Option (B)

Q.11) While doing levelling in undulating terrain, it is preferable to set the level on :

A) The top of summit

B) The bottom of valley

C) One side of the slope

D) anywhere

Answer

Option (C)

Q.12) Dumpy level is most suitable when :

A) The instrument is to be shifted frequently

B) Fly levelling is being done over long distance

C) Many readings are to be taken from a single setting of the instrument

D) All of the above

Answer

Option (C)

Q.13) An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as :

A) Contour line

B) Horizontal equivalent

C) Contour interval

D) Contour gradient

Answer

Option (D)

Q.14) Which of the following methods of contouring is most suitable for a hilly terrain?

A) Direct method

B) Square method

C) Cross-sections method

D) Tacheometric method

Answer

Option (D)

Q.15) The process of determining the locations of the instrument station by drawing resectors from the locations of the known stations is called :

A) Radiation

B) Intersection

C) Resection

D) Traversing

Answer

Option (C)

Q.16) Subtense bar is an instrument used for :

A) Levelling

B) Measurement of horizontal distances in plane areas

C) Measurement of horizontal distances in undulated areas

D) Measurement of angles

Answer

Option (C)

Q.17) Different grades are joined together by :

A) Compound curve

B) Vertical curve

C) Reverse curve

D) Transition curve

Answer

Option (B)

Q.18) The shape of vertical curve generally provided is :

A) Circular

B) Parabolic

C) Spiral

D) Elliptical

Answer

Option (B)

Q.19) When wind effect is not considered during flight planning, the result is a :

A) Crab

B) Drift

C) Mosaic

D) None of the above

Answer

Option (B)

Q.20) Which of the following closely represents the shape of the earth?

A) Spheroid

B) Ellipsoid

C) Oblate spheroid

D) Prolate spheroid

Answer

Option (C)

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