If a tacheometer is fitted with an anal-latic lens
If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as
Prismatic compass is considered more accurate than a surveyor's compass, because
Pantagraph is used for
Back bearing of a line is equal to
Pick up the correct statement from the following :
A theodolite is said to be in perfect adjustment if
Greater accuracy in linear measurements, is obtained by
While measuring a chain line between two stations A and B intervened by a raised ground
A standard steel tape of lengthm and cross-sectionx 1.0 mm was standardised at 25°C and atkg pull. While measuring a base line at the same temperature, the pull applied waskg. If the modulus of elasticity of steel tape is 2.2 x 106 kg/cm2, the correction to be applied is
Volume of the earth work may be calculated by
Cross-staff is used for
In reciprocal levelling, the error which is not completely eliminated, is due to
An angle of deflection right, may be directly obtained by setting the instrument to read
In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and the straight, and the angle between the polar ray and the straight, is
In levelling operation,
If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by
In an internal focusing telescope
Pick up the correct statement from the following :
While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates
The chord of a curve less than peg interval, is known as
Ramsden eye-piece consists of
From any point on the surface with a given inclination
The Random errors tend to accumulate proportionally to
The bearing of AB isand that of CB is30'. The included angle ABC, is
Which one of the following mistakes/errors may be cumulative + or - :
Magnetic bearing of a survey line at any place
The 'point of curve' of a simple circular curve, is
In tacheometrical observations, vertical staff holding is generally preferred to normal staffing, due to
The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
Magnetic bearing of a survey line at any place
The total change in level along the line is equal to total back sights
The apparent error on reversal is
The branch of surveying in which both horizontal and vertical positions of a point, are determined by making instrumental observations, is known
The longitudinal section of the surface of bubble tube is
For preparation of a contour plan for a route survey
The slope correction may be ignored if
For preparation of a contour plan for a route survey
The ratio of the linear displacement at the end of a line, subtended by an arc of one second to the length of the line, is
The co-ordinate of a point measured perpendicular to the parallel, is called
The main plate of a transit is divided intoequal divisions.divisions of the vernier coincide exactly withdivisions of the main plate. The transit can read angles accurate upto
Mistakes which may produce a very serious effect upon the final results arise due to
The smaller horizontal angle between the true meridian and a survey line, is known
The distance between steps for measuring down hill to obtain better accuracy
Number of subdivisions per metre length of a levelling staff is
There are two stations A and B. Which of the following statements is correct :
The chaining on sloping ground is
Angles to a given pivot station observed from a number of traverse stations when plotted, the lines to the pivot station intersect at a common point
While measuring the distance between two points along upgrade with the help of am chain, the forward end of the chain is shifted forward through a distance
The true meridian of a place is the line in which earth's surface is intersected by a plane through