Online Civil Engineering Test - Advanced Surveying Test

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Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
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Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.

by subtracting their longitudes if places are in the same hemisphere

by adding their longitudes if places are in the different hemispheres

by subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres

all the above.

[#]

The position of a heavenly body on the celestial sphere can be completely specified by

its altitude and azimuth

its declination and hour angle

its declination and right ascension

all the above.

[#]

In a tropical year, the number of sidereal days are

one less than mean solar days

one more than mean solar days

equal to mean solar days

none of these.

[#]

The stereo plotting instruments are generally manufactured on the principle of

optical projection

optical mechanism projection

mechanical projection

all the above.

[#]

Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel

24%

36%

40%

60%.

[#]

The equation which is obtained by multiplying each equation by the coefficient of its un-knowns and by adding the equations thus formed, is known as

observation equation

conditional equation

normal equation

none of these.

[#]

The relief displacement of a minar 72 m high on photograph is 7.2 mm and its top appears 10 cm away from principal point. The flying height of the camera, is

500 m

1000 m

1500 m

2000 m.

[#]

The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as

isocentre

principal point

perspective centre

plumb line.

[#]

If f is the focal length of the camera lens and θ is the angle of tilt, the distance of the plumb point from the principal point will be

f sin θ

f cos θ

f tan θ

f sec θ.

[#]

10.

An aerial photograph may be assumed as

parallel projection

orthogonal projection

central projection

none of these.

[#]

11.

If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is

[#]

12.

The point on the photograph where bisector between the vertical line through optical centre of the camera lens and the plate perpendicular meets, is known as

principal point

isocentre

plumb point

perspective centre.

[#]

13.

Homologous point is

photo principal point

ground principal point

ground isocentre

photo isocentre

all the above.

[#]

14.

The difference of parallax for a given difference in elevation is independent of

focal length of the camera

overall size of the photo graphs

percentage of overlap

all the above.

[#]

15.

Homologous points are

opposite corners of a photograph

nodal points of the camera lens

corresponding points on the ground and photograph

plumb points of stereo pair of photographs.

[#]

16.

In a spherical triangle ABC, right angled at C, sin b equals

sin a cos A

cos a sin A

tan a cot A

cot A tan a

none of these.

[#]

17.

The angle between the observer's meridian and declination circle of a heavenly body, is known as

hour angle

azimuth

right ascension

declination.

[#]

18.

The distance between the projection centre and the photograph, is called

principal distance

principal line

isocentric distance

focal length.

[#]

19.

The principal line is the line joining the principal point and

nadir

isocentre

perspective centre

none of these.

[#]

20.

Pick up the correct statement from the following :

the horizontal direction of the pole is called astronomical north.

the angle between the direction of true north and the direction of a survey line is called astronomical bearing

the astronomical bearing is generally called azimuth

all the above.

[#]

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Online Civil Engineering Test - Advanced Surveying Test

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