Practice Test: Question Set - 26
1. Pick up the correct statement from the following:
- (A) The power of
a lens is the reciprocal of its focal length
- (B) The unit of
power of the lens is Diopter
- (C) The power of
two or more thin lenses in contact is the power of the combination of the
lenses
- (D) All the
above
2. Pick up the correct statement from the following:
- (A) A level
surface is perpendicular at all points to the direction of gravity
- (B) A level line
lies in level surface
- (C) A horizontal
surface is normal to the direction of gravity at only one point
- (D) All the
above
3. Designation of a curve is made by:
- (A) Angle
subtended by a chord of any length
- (B) Angle
subtended by an arc of specified length
- (C) Radius of
the curve
- (D) Curvature of
the curve
4. In chain surveying tie lines are primarily provided
- (A) To check the
accuracy of the survey
- (B) To take
offsets for detail survey
- (C) To avoid
long offsets from chain lines
- (D) To increase
the number of chain lines
5. The minimum range for sliding the focusing lens in the internal focusing telescope for focusing at all distances beyond 4 m is
- (A) 5 mm
- (B) 10 mm
- (C) 15 mm
- (D) 20 mm
6. An internal focussing type surveying telescope, may be focussed by the movement of
- (A) Objective
glass of the telescope
- (B) Convex-lens
in the telescope
- (C) Concave lens
in the telescope
- (D) Plano-convex
lens in the telescope
7. True meridians are generally preferred to magnetic meridians because
- (A) These
converge to a point
- (B) These change
due to change in time
- (C) These remain
constant
- (D) None of
these
8. The total change in level along the line is equal to total back sights
- (A) Minus total
fore sights
- (B) The total
rises minus total falls
- (C) The reduced
level of last point minus reduced level of the first point
- (D) All the
above
9. The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is
- (A) 21° 45'
- (B) 42° 15'
- (C) 42° 15' W
- (D) 21° 45' W
10. If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by
- (A) Bowditch's
rule
- (B) Transit rule
- (C) Empirical
rule
- (D) All of the
above
11. While measuring with a metallic tape of 30 m length pull should be applied
- (A) 1 kg
- (B) 2 kg
- (C) 3 kg
- (D) 4 kg
12. If a linear traverse follows a sharp curve round a large lake where it is difficult to have long legs, the accuracy of the traverse may be improved by
- (A) Taking short
legs
- (B) Making
repeated observations of angular and linear measurements
- (C) Making a
subsidiary traverse to determine the length of a long leg
- (D) All the
above
13. Pick up the correct specification of Ramsden eyepiece from the following:
- (A) It consists
of two equal piano convex lenses
- (B) The curved
surfaces of Plano-convex lenses face each other
- (C) The distance
between the diaphragm and the front lens of the eyepiece is kept equal to 1/4
th of the focal length of a lens so that rays from a point on the diaphragm
enter the eye as a parallel beam
- (D) All the
above
14. The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
- (A) Reciprocal
levelling
- (B) Precise
levelling
- (C) Differential
levelling
- (D) Flying
levelling
15. Diaphragm of a surveying telescope is held inside
- (A) Eye-piece
- (B) Objective
- (C) Telescope
tube at its mid point
- (D) Telescope at
the end nearer the eye-piece