a) Both A and R are true and R is the correct explanation of A b) Both A and R are true but R is not a correct explanation of A c) A is true but R is false d) A is false but R is true
361. Assertion A : The vertical angles cannot be measured by the method of repetition.
Reason R : There is only one rotation that is possible in the vertical plane.
362. Assertion A : If a place is in the western hemisphere, the magnetic needle will be to the west of the geographical meridian. If the place is in the eastern hemisphere, the needle will be to the east of the geographical meridian.
Reason R : The magnetic needle does not remain on one side of the geographical
meridian. It varies from place to place. a
363. Assertion A : The position of a boat in sea can be fixed by looking at the light
house, a church tower and a chimney on the coast
Reason R : The principle of three-point problem can be used a
364. Assertion A : Combined correction due to the curvature and refraction to the staff reading on a distance object is negative.
Reason R : Due to curvature effect, the actual reading should be smaller than what is observed. However, due to horizontal
line of sight, the observed reading will be higher b
365. Assertion A : In rise and fall method of booking observations and reducing
elevations of points, a complete check on the reduction of R.Ls. of intermediate
stations is there.
Reason R : Intermediate sights are included for the calculation of rise and
366. increases along the length of transition curve.
Reason R : The radius of transition curve decreases along the length of die curve.Assertion A : The super-elevation a
367. Assertion A : The object of providing an additional concave lens in the telescope, in a tacheometer is to eliminate the additive
Reason R: The anallactic lens absorbs some of the incident light and to
compensate this and to increase the illumination, a larger object glass is
368. Assertion A : The magnetic bearings of different lines connot be regarded as fixed.
Reason R : The magnetic meridian changes its direction due to variation from
time to time, the magnetic bearings of survey line also change
369. Assertion A : Every point on the aerial photograph, which is displaced from its
true orthographic position, is called relief displacement.
Reason R : Relief displacement increases as the distance from the principal point
370. Assertion A : The meridian distance of any line is equal to the meridian distance of its midpoint.
Reason R : The meridian distance of any line is equal to the meridian distance of
the preceding line plus half the departure of the preceding line plus half the
departure of the line itself a
371. Assertion A : The rate of increase of curvature along the transition curve should be equal to the rate of increase of super elevation.
Reason R: The length of the transition curve should be fixed in such a manner
that full super elevation is achieved at the junction with the circular curve. a
372. Assertion A : Except in case of an overhanging cliff, two contour lines
cannot merge or intersect at a point on the map.
Reason R : Intersection of two contour lines means one point on the surface of the
earth will have two different elevations. This is not possible. a
373. Assertion A : The degree of curve is directly proportional to the radius of the
Reason R : A sharp curve has a large degree of curve and a flat curve has a
small degree of curve d