# Practice Test: Question Set - 14

**1. The suitable contour interval for a map with scale 1 : 10000 is**

- (A) 2 m

- (B) 5 m

- (C) 10 m

- (D) 20 m

**2. In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to**

- (A) Line of
sight

- (B) Line
of collimation

- (C) Axis
of the telescope

- (D) None
of these

**3. Ranging is an operation of**

- (A) Reconnaissance

- (B) Judging
the distance

- (C) Determination
of slope

- (D) Establishing
intermediate points between terminals

**4. 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

**5. If**

*f*_{1}and*f*_{2}are the distances from the optical centre of a convex lens of focal length ‘*f’*to conjugate two points*P*_{1}and*P*_{2}respectively, the following relationship holds good- (A)

*f*=

*f*

_{1}+

*f*

_{2}

- (B)

*f*= ½ (

*f*

_{1}+

*f*

_{2})

- (C) 1/

*f =*1

*/f*

_{1}+ 1/

*f*

_{2}

- (D) None of these

**6. If the intercept on a vertical staff is observed as 0.75 m from a tachometer, the horizontal distance between tachometer and staff**

- (A) 7.5 m

- (B) 25 m

- (C) 50 m

- (D) 75 m

**7. Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to**

- (A) Half the
width of a strip, multiplied by the sum of two extreme offsets, twice the sum
of remaining odd offsets, and thrice the sum of the even offsets

- (B) One-third
the width of a strip, multiplied by the sum of two extreme offsets, twice the
sum of remaining odd offsets and four times the sum of the even offsets

- (C) One-third
the width of a strip, multiplied by the sum of two extreme offsets, four times
the sum of the remaining odd offsets, and twice the sum of the even offsets

- (D) One-sixth
the width of a strip, multiplied by the sum of the two extreme offsets, twice
the sum of remaining odd offsets and four times the sum of the even offsets

**8. The ratio of the distances at which a stated length can be distinguished by the telescope and the human eye, respectively, is called**

- (A) Brightness
of telescope

- (B) Magnification
of telescope

- (C) Resolving
power of telescope

- (D) None of
these

**9. The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree of the curve is**

- (A) 5.73°

- (B) 5.37°

- (C) 3.57°

- (D) 3.75°

**10. If ‘**

*R’*is the radius of the main curve, ‘θ’ the angle of deflection, ‘*S’*the shift and ‘*L’*the length of the transition curve, then, total tangent length of the curve, is- (A) (

*R*-

*S*) tan θ/2 -

*L*/2

- (B) (

*R*+

*S*) tan θ/2 -

*L*/2

- (C) (

*R*+

*S*) tan θ/2 +

*L*/2

- (D) (

*R*-

*S*) tan θ/2 +

*L*/2

**11. A series of closely spaced contour lines represents a**

- (A) Steep
slope

- (B) Gentle slope

- (C) Uniform
slope

- (D) Plane
surface

**12. In an internal focusing telescope**

- (A) The
objective is at a fixed distance from the diaphragm

- (B) The
focusing is done by the sliding of a divergent lens

- (C) The focusing
divergent lens is situated at about the middle of the tube

- (D) All the
above

**13. During secular variation of magnetic meridian at different places**

- (A) Range
of oscillations is constant

- (B) Period
of oscillation is constant

- (C) Range and
period of oscillation both vary

- (D) Period
of oscillation only varies

**14. Correction per chain length of 100 links along a slope of α radians, is**

- (A) 100

*α*

^{2}- (B) 100

*α*

- (C) 100

*α*

^{3}- (D) 100

*α*

^{-1}**15. 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**

- (A) Correctly
focussed

- (B) Not
correctly focussed

- (C) Said to have
parallax

- (D) Free from
parallax

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