Questions and answers for exam Preparation

MCQs

Total Questions : 2015 | Page 196 of 202 pages

Question 1951. Which of the following errors is not eliminated by the method of repetition of horizontal 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

Discuss Question

Answer: Option B. -> error due to displacement of station signals
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1952. The rise and fall method of levelling provides a complete check on_______________?

backsight
intermediate sight
foresight
all of the above

Discuss Question

Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1953. 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

Discuss Question

Answer: Option B. -> line parallel to the mean spheriodal surface of earth
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1954. In an internal focussing type of telescope, the lens provided is_______________?

concave
convex
plano-convex
plano-concave

Discuss Question

Answer: Option A. -> concave
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1955. 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

Discuss Question

Answer: Option A. -> reading both verniers and taking the mean of the two
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1956. 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’

Discuss Question

Answer: Option A. -> increase
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1957. 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

Discuss Question

Answer: Option D. -> four times the true error
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1958. 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

Discuss Question

Answer: Option D. -> none of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1959. Refraction correction________________?

completely eliminates curvature correction
partially eliminates curvature correction
adds to the curvature correction
has no effect on curvature correction

Discuss Question

Answer: Option B. -> partially eliminates curvature correction
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1960. If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to_________________?
1. altitude bubble on index frame
2. altitude bubble on index frame if it is to be used as a level
3. altitude bubble on telescope
4. altitude bubble on telescope if it is to be used as a level
The correct answer is?