100 TOP Surveying Objective type Questions and Answers pdf

21.    Local attraction in compass surveying may exist due to
a)    incorrect levelling of the magnetic needle
b)    loss of magnetism of the needle
c)    friction of the needle at the pivot
d)    presence of magnetic substances near the instrument
Ans: d

22.    In the quadrantal bearing system, a whole circle bearing of 293° 30' can be expressed as
a)    W23°30'N
b)    N66°30'W
c)    S113°30'N
d)    N23°30'W
Ans: b

23.    The prismatic compass and surveyor's compass
a)    give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
b)    both give QB of a line and WCB of a line
c)    both give QB of a line
d)    both give WCB of a line
Ans: a

24.    The horizontal angle between the true meridian and magnetic meridian at a place is called
a)    azimuth
b)    declination
c)    local attraction
d)    magnetic bearing
Ans: b

25.    A negative declination shows that the magnetic meridian is to the
a)    eastern side of the true meridian
b)    western side of the true meridian
c)    southern side of the true meridian
d)    none of the above
Ans: b

26.    If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is
a)    77° N
b)    23° S
c)    13° E
d)    13° W
Ans: c

27.    The graduations in prismatic compass
i)    are inverted
ii)    are upright
iii)    run clockwise having 0° at south
iv)    run clockwise having 0° at north
The correct answer is
a)    (i) and (iii)
b)    (i) and (iv)
c)    (ii) and (iii)
d)    (ii) and (iv)
Ans: a

28.    Agate cap is fitted with a
a)    cross staff
b)    level
c)    chain
d)    prismatic compass
Ans: d

29.    The temporary adjustments of a prismatic compass are
i)    Centering
ii)   Levelling
iii) Focusing the prism
The correct order is
a)    (0, (iii), 00
b)    (0, (ii), (iii)
c)    (ii), (iii), 0)
d)    (in), (i), (ii)
Ans: b

30.    Theodolite is an instrument used for
a)    tightening the capstan-headed nuts of level tube
b)    measurement of horizontal angles only
c)    measurement of vertical angles only
d)    measurement of both horizontal and vertical angles
Ans: d

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