### Surveying Set 1

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This set of Surveying Multiple Choice Questions & Answers (MCQs) focuses on Surveying Set 1

Q1 | During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is
• 4 chains
• 6 chains
• 120 m
• 180m
Q2 | A metallic tape is made of
• steel
• invar
• linen
• cloth and wires
Q3 | For a well-conditioned triangle, no angle should beless than
• 20°
• 30°
• 45°
• 60°
Q4 | The angle of intersection of the two plane mirrors ofan optical square is
• 30°
• 45°
• 60°
• 90°
Q5 | The allowable length of an offset depends upon the
• degree of accuracy required
• method of setting out the perpendiculars and nature of ground
• scale of plotting
• all of the above
Q6 | Which of the following angles can be set out with the help of French cross staff?
• 45° only
• 90° only
• either 45° or 90°
• any angle
Q7 | Which of the following methods of offsets involves less measurement on theground?
• method of perpendicular offsets
• method of oblique offsets
• method of ties
• all involve equal measurement on the ground
Q8 | The permissible error in chaining for measurement with chain on rough or hillyground is
• 1 in 100
• 1 in 250
• 1 in 500
• 1 in 1000
Q9 | The correction for sag is
• always additive
• always subtractive
• always zero
• sometimes additive and sometimes subtractive
Q10 | Cross staff is an instrument used for
• measuring approximate horizontal angles
• setting out right angles
• measuring bearings of the lines
• none of the above
Q11 | Normal tension is that pull which
• is used at the time of standardising the tape
• neutralizes the effect due to pull and sag
• makes the correction due to sag equal to zero
• makes the correction due to pull equal to zero
Q12 | Which of the following is not used in measuring perpendicular offsets ?
• line ranger
• steel tape
• optical square
• cross staff
Q13 | If the length of a chain is found to be short on testing, it can be adjusted by
• straightening the links
• removing one or more small circular rings
• closing the joints of the rings if opened out
• all of the above
Q14 | The maximum tolerance in a 20 m chain is
• ±2 mm
• ±3 mm
• ±5 mm
• ±8 mm
Q15 | For accurate work, the steel band should always be used in preference to chainbecause the steel band
• is lighter than chain
• is easier to handle
• is practically inextensible and is not liable to kinks when in use
• can be easily repaired in the field
Q16 | The length of a chain is measured from
• centre of one handle to centre of other handle
• outside of one handle to outside of other handle
• outside of one handle to inside of other handle
• inside of one handle to inside of other handle
Q17 | Select the incorrect statement.
• The true meridians at different places are parallel to each other.
• The true meridian at any place is not variable.
• The true meridians converge to a point in northern and southern hemispheres.
• The maps prepared by national survey departments of any country are based on true meridi
Q18 | If the true bearing of a line AB is 269° 30?, then the azimuthof the line AB is
• 0° 30?
• 89° 30?
• 90° 30?
• 269° 30?
Q19 | In the prismatic compass
• the magnetic needle moves with the box
• the line of the sight does not move with the box
• the magnetic needle and graduated circle do not move with the box
• the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction
Q20 | For a line AB
• the forebearing of AB and back bearing of AB differ by 180°
• the forebearing of AB and back bearing of BA differ by 180°
• both (a) and (b) are correct.
• none is correct
Q21 | Local attraction in compass surveying may exist due to
• incorrect levelling of the magnetic needle
• loss of magnetism of the needle
• friction of the needle at the pivot
• presence of magnetic substances near the instrument
Q22 | In the quadrantal bearing system, a whole circle bearing of 293° 30? can be expressed as
• W23°30’N
• N66°30’W
• S113°30’N
• N23°30’W
Q23 | The prismatic compass and surveyor’s compass
• give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
• both give QB of a line and WCB of a line
• both give QB of a line
• both give WCB of a line
Q24 | The horizontal angle between the true meridian and magnetic meridian at aplace is called
• azimuth
• declination
• local attraction
• magnetic bearing
Q25 | A negative declination shows that the magnetic meridian is to the
• eastern side of the true meridian
• western side of the true meridian
• southern side of the true meridian
• none of the above