# Practice Test: Question Set - 12

**1. Benchmark is established by**

- (A) Hypsometry

- (B) Barometric
levelling

- (C) Spirit
levelling

- (D) Trigonometrical
levelling

**2. If a tacheometer is fitted with an anal-latic lens**

- (A) Additive
constant is 100, multiplying constant is zero

- (B) Multiplying
constant is 100, additive constant is zero

- (C) Both
multiplying and additive constants are 100

- (D) Both
multiplying and additive constants are 50

**3. Short offsets are measured with**

- (A) An ordinary
chain

- (B) An invar
tape

- (C) A metallic
tape

- (D) A steel tape

**4. The representation of general topography of a very flat terrain is possible only**

- (A) By drawing
contours at large interval

- (B) By drawing
contours at small interval

- (C) By giving
spot levels at large interval

- (D) By giving
spot levels to salient features at close interval

**5. True meridian of different places**

- (A) Converge
from the South Pole to the North Pole

- (B) Converge
from the North Pole to the South Pole

- (C) Converge
from the equator to the poles

- (D) Run parallel
to each other

**6. The angle between the prolongation of the preceding line and the forward line of a traverse is called**

- (A) Deflection
angle

- (B) Included
angle

- (C) Direct angle

- (D) None of the
above

**7. To set out a parallel from a given inaccessible point to a given line**

*AB*, the following observations are made:**Distance**

*AB*and angle*PAM*=*a*and angle*PBA*=*b*are measured where M is a point on the line*BA*produced. The perpendicular to the desired parallel line from*A*and*B*are:- (A)

*AB*/(

*cot b*-

*cot a*)

- (B)

*AB*/(

*cos b - cos a*)

- (C)

*AB*/(

*cot a - cot b*)

- (D)

*AB*/(

*cot a - cos b*)

**8. Pick up the correct statement from the following:**

- (A) A refracting
telescope consists optically of two lenses

- (B) The
principal axes of both the lenses coincide the optical axis of the telescope

- (C) The lens
nearer the object to be viewed is convex and is called objective

- (D) All the
above

**9. In case of a direct vernier scale**

- (A) Graduations
increase in opposite direction in which graduations of the main scale increase

- (B) Smallest
division is longer than smallest division of the main scale

- (C) Graduations
increase in the same direction in which graduations of the main scale increase

- (D) None of
these

**10. The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known**

- (A) Balancing
the sights

- (B) Balancing
the departures

- (C) Balancing
the latitudes

- (D) Balancing
the traverse

**11. Dumpy level is most suitable when**

- (A) The
instrument is to be shifted frequently

- (B) Fly
levelling is being done over long distance

- (C) Many
readings are to be taken from a single setting of the instrument

- (D) All of the
above

**12. Magnetic declination at any place**

- (A) Remains
constant

- (B) Does not
remain constant

- (C) Fluctuates

- (D) Changes
abruptly

**13. If the length of a chain line along a slope of θ° is**

*l*, the required slope correction is- (A) 2

*l*cos

^{2}θ/2

- (B) 2

*l*sin

^{2}θ/2

- (C)

*l*tan

^{2}θ/2

- (D)

*l*cos

^{2}θ/2

**14. The combined effect of curvature and refraction over a distance ‘**

*L’*kilometres is- (A) 67.2

*L*

^{2}mm

- (B) 76.3

*L*

^{2}mm

- (C) 64.5

*L*

^{2}mm

- (D) None of
these

**15. The systematic errors which persist and have regular effects in the performance of a survey operation are due to**

- (A) Carelessness

- (B) Faulty
instrument

- (C) Inattention

- (D) None
of these

**View All Answers**