Surveying Set 2 MCQs

Q1 | If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at thatplace is

77° N

23° S

13° E

13° W

Q2 | The graduations in prismatic compassi) are invertedii) are uprightiii) run clockwise having 0° at southiv) run clockwise having 0° at northThe correct answer is

(i) and (iii)

(i) and (iv)

(ii) and (iii)

(ii) and (iv)

Q3 | Agate cap is fitted with a

cross staff

level

chain

prismatic compass

Q4 | The temporary adjustments of a prismatic compass arei) Centeringii) Levellingiii) Focusing the prismThe correct order is

(0, (iii), 00

(0, (ii), (iii)

(ii), (iii), 0)

(in), (i), (ii)

Q5 | Theodolite is an instrument used for

tightening the capstan-headed nuts of level tube

measurement of horizontal angles only

measurement of vertical angles only

measurement of both horizontal and vertical angles

Q6 | The process of turning the telescope about the vertical axis inhorizontal plane is known as

transiting

reversing

plunging

swinging

Q7 | Size of a theodolite is specified by

the length of telescope

the diameter of vertical circle

the diameter of lower plate

the diameter of upper plate

Q8 | Which of the following is not the function of levelling head ?

to support the main part of the instrument

to attach the theodolite to the tripod

to provide a means for leveling the theodolite

none of the above

Q9 | If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated

on its outer spindle with a relative motion between the vernier and graduated scale of lower plate

on its outer spindle without a relative motion between the vernier and graduated scale of lower plate

on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate

on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

Q10 | A telescope is said to be inverted if its

vertical circle is to its right and the bubble of the telescope is down

vertical circle is to its right and the bubble of the telescope is up

vertical circle is to its left and the bubble of the telescope is down

vertical circle is to its left and the bubble of the telescope is up

Q11 | The cross hairs in the surveying telescope are placed

midway between eye piece and objec¬tive lens

much closer to the eye-piece than to the objective lens

much closer to the objective lens than to the eye piece

anywhere between eye-piece and objective lens

Q12 | For which of the following permanent adjustments of theodolite, the spire testis used ?

adjustment of plate levels

adjustment of line of sight

adjustment of horizontal axis

adjustment of altitude bubble and vertical index frame

Q13 | The adjustment of horizontal cross hair is required particularly when the instrument is used for

leveling

prolonging a straight line

measurement of horizontal angles

all of the above

Q14 | Which of the following errors is not eliminated by the method of repetition ofhorizontal angle measurement ?

error due to eccentricity of verniers

error due to displacement of station signals

error due to wrong adjustment of line of collimation and trunnion axis

error due to inaccurate graduation

Q15 | The error due to eccentricity of inner and outer axes can be eliminated by

reading both verniers and taking the mean of the two

taking both face observations and taking the mean of the two

double sighting

taking mean of several readings distributed over different portions of the graduated circle

Q16 | In the double application of principle of reversion, the apparent error is

equal to true error

half the true error

two times the true error

four times the true error

Q17 | Which of the following errors can be eliminated by taking mean of bot faceobservations ?

error due to imperfect graduations

error due to eccentricity of verniers

error due to imperfect adjustment of plate levels

error due to line of collimation not being perpendicular to horizontal axis

Q18 | Which of the following errors cannot be eliminated by taking both face observations ?

error due to horizontal axis not being perpendicular to the vertical axis

index error i.e. error due to imperfect adjustment of the vertical circle vernier

error due to non-parallelism of the axis of telescope level and line of collimation

none of the above

Q19 | If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will

increase

decrease

not change

either ‘a’ or ‘b’

Q20 | If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a level The correct answer is

only (i)

both (i) and (iv)

only (iii)

both (ii) and (iii)

Q21 | A’level line’is a

horizontal line

line parallel to the mean spheriodal surface of earth

line passing through the center of cross hairs and the center of eye piece

line passing through the objective lens and the eye-piece of a dumpy or tilting level

Q22 | The following sights are taken on a “turning point”

foresight only

backsight only

foresight and backsight

foresight and intermediate sight

Q23 | The rise and fall method of levelling provides a completed check on

backsight

intermediate sight

foresight

all of the above

Q24 | If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is1.870 m, the R.L. of the forward station is

99.345 m

100.345 m

100.655m

101.870m

Q25 | In an internal focussing type of telescope, the lens provided is

concave

convex

plano-convex

plano-concave