57.

58.

59.

60.

61.

62.

63.

64.

65.

In plate level test of theodolite, vertical axis is made truly vertical by manipulating

(A) Capstan screws (B) Wing nuts

(C) Foot screws (D) Shifting centre arrangement

Closing error in a stadia traverse should not exceed ____ where p is perimeter of
the traverse.

(A) 0.01 vp (B) 0.01 p

(C) 0.055 vp (D) 20 p

'SPIRE TEST' is used in permanent adjustment of theodolite for adjusting the

(A) Vertical axis (B) Line of sight

(C) Horizontal axis (D) Plate levels

Bowditch rule is applied to

(A) Determine effect of local attraction

(B) A closed traverse for adjustment of closing error
(C) An open traverse for graphical adjustment

(D) None of these

Mean sea level at any place is the average datum of hourly tide height observed over
a period of nearly

(A) 50 years (B) 19 years

(C) 5 years (D) 10 years

If L is latitude and D is departure, then closing error is given by
(A) [ ( ZL? + ED?) ] (B) v (ZL + =D)

(C) v ( ZL? + ED?) (D) None of these

What is the purpose of using theodolite primarily?
(A) To measure inclined angle only

(B) To measure vertical angle only

(C) To measure horizontal and vertical angles

(D) To measure horizontal angle only

In a theodolite the line of collimation is
(A) Perpendicular to the trunnion axis (B) Parallel to the vertical axis
(C) Parallel to axis of plate levels (D) Parallel to the horizontal axis

Size of a theodolite is specified by
(A) Diameter of upper plate (B) Diameter of lower plate
(C) Diameter of vertical circle (D) Length of telescope

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