761. Latitude of the observer’s position is equal to altitude of
A. north pole
B. pole star
C. celestial pole
D. all the above.

762. The position of a heavenly body on the celestial sphere can be completely specified by
A. its altitude and azimuth
B. its declination and hour angle
C. its declination and right ascension
D. all the above.

763. The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is
A. altitude and azimuth system
B. declination and hour angle system
C. declination and right ascension system
D. declination and altitude system

764. Circumpolar stars
A. rotate round the north pole
B. rotate round the celestial pole
C. remain always above the horizon
D. are seldom seen near the pole star

765. For any star to be a circumpolar star, its
A. declination must be 0?
B. declination must be 90?
C. distance from the pole must be less than the latitude of the observer
D. hour angle must be 180?.

766. Plotting of inaccessible points on a plane table, is done by
A. intersection
B. traversing
C. radiation
D. none of these.

767. Locating the position of a plane table station with reference to three known points, is known as
A. intersection method
B. radiation method
C. resection method
D. three point problem.

768. The ‘fix’ of a plane table from three known points, is good, if
A. middle station is nearest
B. middle station is farthest
C. either the right or left station is nearest
D. none of these.

769. The ‘fix’ of a plane table station with three known points, is bad if the plane table station lies
A. in the great triangle
B. outside the great triangle
C. on the circumference of the circumscribing circle
D. none of these.

770. One of the Lehmann’s rules of plane tabling, is
A. location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances
B. when looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray
C. when the instrument station is outside the circumscribing circle its location is always on the opposite side of the ray to the most distant point as the intersection of the other two rays
D. none of these.

NOTE
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