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This set of Surveying Multiple Choice Questions & Answers (MCQs) focuses on Surveying Set 18

Q1 | Chain surveying consists of the arrangement of framework of triangles because a triangle is the only simple plane figure which can be plotted uniquely if
  • three sides
  • three angles
  • one side and two angles
  • one angle and two sides
Q2 | The curvature of the earth is taken into consideration if the limit of survey is
  • 50 to 100 km2
  • 100 to 200 km2
  • 200 to 250 km2
  • more than 250 km2
Q3 | The horizontal distance between any two consecutive contours is called
  • vertical equivalent
  • horizontal equivalent
  • contour interval
  • contour gradient
Q4 | When the effect of refraction is taken into account in levelling, the true staff reading is obtained by subtracting the correction for refraction from the observed staff reading.
  • Right
  • Wrong
Q5 | A vertical line at any point is a line normal to the level surface at the point.
  • Yes
  • No
Q6 | A stadia telescope, in a tacheometer, is fitted with
  • two additional vretical hairs
  • two additional horizontal hairs
  • all of these
Q7 | In route surveys, the most suitable method of contouring is
  • by squares
  • by radial lines
  • by cross-sections
  • by tacheometer
Q8 | Which of the following statement is wrong?
  • The magnetic meridian coincides with the true meridian at all the places
  • The magnetic meridian does not vary from place to place on the earth's surface.
  • The magnetic declination at a place is constant.
  • all of the above
Q9 | The direct angles may have any value between
  • 0? and 90?
  • 0? and 120?
  • 0? and 180?
  • 0? and 360?
Q10 | When the length of a chord is less than the peg interval, it is known as
  • small chord
  • short chord
  • sub-chord
  • normal chord
Q11 | The fundamental requirement of the spiral curve is that its radius of curvature at any point shall vary inversely as the distance from the beginning of the curve.
  • Agree
  • Disagree
Q12 | The deflection angle may be directly obtained by setting the instrument to read
  • 0?
  • 90?
  • 180?
  • 270?
Q13 | If x is the smallest division on the main scale and n are the number of divisions on the vernier, then the least count of the vernier is
  • x + n
  • x - n
  • x x n
  • x ? n
Q14 | A line joining some fixed points on the main survey lines, is called a
  • check line
  • tie line
  • base line
  • none of these
Q15 | The degree of the curve is the angle subtended by a chord of
  • 15 m
  • 20 m
  • 25 m
  • 30 m
Q16 | The length of peg interval for flat curves is
  • 15 m
  • 20 m
  • 25 m
  • 30 m
Q17 | A staff reading taken on a point whose elevation is to be determined as on a change point is called.
  • fore sight reading
  • back sight reading
  • intermediate sight
  • none of these
Q18 | When the position of a point is to be located accurately by a perpendicular offset, the direction of perpendicular is set out by means of
  • theodolite
  • optical square
  • dumpy level
  • planimeter
Q19 | The height of instrument is equal to
  • reduced level of bench mark + back sight
  • reduced level of bench mark + fore sight
  • reduced level of bench mark + intermediate sight
  • back sight + fore sight
Q20 | The tachemometric method of contouring is particularly suitable
  • when a contoured map of hill is required
  • when the area is not very extensive
  • in surveys of roads or railways
  • all of these
Q21 | The method of surveying in which field work and plotting work are done simultaneously, is called
  • compass surveying
  • levelling
  • plane tabling
  • chain surveying
Q22 | The operation of turning the table so that all the lines on the paper are parallel to the corresponding lines on the ground, is called
  • levelling
  • centering
  • setting
  • orientation
Q23 | A line joining the apex of a triangle to some fixed point on the opposite side is called a
  • check line
  • tie line
  • base line
  • none of these
Q24 | Which of the following statement is correct?
  • The error in measured length due to bad ranging is compensating error.
  • If the chain used in measuring a distance is too short, the error is positive error.
  • The error in measured length due to careless holding of chain is cumulative error.
  • When the pull applied while measuring with a tape, is more than the standard pull for that tape, the error in measured length is positive.
Q25 | The contour lines can cross one another on map only in the case of
  • a vertical cliff
  • a valley
  • a ridge
  • an overhanging cliff