43751. Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is
43752. If θ is the vertical angle of an inclined sight, δ is the angle of tilt of the staff, the error
43753. One of the tacheometric constants is additive, the other constant, is
43754. The limiting length of an offset does not depend upon
43755. In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
43756. If L is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is
43757. If means-,^means /,v means x then the value of 16^ 4V 2<2>3
43758. Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following
43759. While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is
43760. Accuracy of 'fix' by two point problem, is
43761. A bearing of a line is also known as
43762. True meridians are generally preferred to magnetic meridians because
43763. Find out the correct alternative with the series.K4J3RPQ2TV3A3
43764. If θ is the slope of the ground and l is the measured distance, the correction is
43765. The most reliable method of plotting a theodolite traverse, is
43766. The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to
43767. Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of offset should be limited to
43768. The probable error of the adjusted bearing at the middle is
43769. The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is
43770. For a closed traverse the omitted measurements may be calculated
43771. The slope correction for a length of 30 m along a gradient of 1 in 20, is
43772. The main principle of surveying is to work
43773. For the construction of highway (or railway)
43774. If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.
43775. The sensitiveness of a level tube decreases if
43776. For true difference in elevations between two points A and B, the level must be set up
43777. ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is
43778. Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than
43779. Select a world synonymous with ;INTEGRITY’.
43780. An ideal transition curve is
43781. Pantagraph is used for
43782. If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by
43783. The branch of surveying in which both horizontal and vertical positions of a point, are determined by making instrumental observations, is known
43784. In levelling operation
43785. If the rate of gain of radial acceleration is 0.3 m per sec3 and full centrifugal ratio is developed. On the curve the ratio of the length of the transition curve of same radius on road and railway, is
43786. The angle between two plane mirrors of optical square, is
43787. The latitude of a traverse leg is obtained by multiplying its length by
43788. A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to
43789. In optical reading instruments
43790. For setting out a simple curve, using two theodolites.
43791. Geodetic surveying is undertaken
43792. The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be
43793. A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at A and B were 1.22 and 1.06. With the level set up a A, the readings at A and B were 1.55 and 1.37. The collimation error per 100 m length of sight is
43794. Keeping the instrument height as 1 m, length of staff 4 m, the up gradient of the ground 1 in 10, the sight on the up slope must be less than
43795. True meridian of different places
43796. Let angular value of one graduation of a tube of length x be φ seconds and R be the radius of its internal curved surface, then
43797. Each of these apartment buildings has ---------own swimming pool
43798. Two hill tops A and B 20 km apart are intervened by a third top C. If the top most contour of the three hill tops are of the same value, state whether the line of sight AB
43799. The diaphragm of a stadia theodolite is fitted with two additional
43800. Centering error of a theodolite produces an error
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