Home
Current Affairs January 2024

What is the correct answer?

4

Pick up the correct statement from the following:

A. The angle between the plane of the negative and the horizontal plane containing perspective axis is the tilt of the photograph

B. The direction of maximum tilt is defined by the photo principal line

C. The principal plane is truly vertical plane which contains perspective centre as well as principal point and plumb point

D. All the above

Correct Answer :

D. All the above


Related Questions

What is the correct answer?

4

The height displacement on a vertical photograph

A. Increases as the horizontal distance increases from the principal point

B. Increases as the ground elevation increases

C. Decreases as the flying height increases

D. All the above

What is the correct answer?

4

Pick up the correct statement from the following:

A. The vertical plane containing the zenith, the station of observation and the celestial pole is the observer's meridian plane

B. The angle between the direction of star in vertical plane and the direction of the star in horizontal plane is called the altitude of the star

C. The complement of the altitude of star is called the zenith distance of the star

D. All the above

What is the correct answer?

4

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

A. πR²E/90°

B. πR²E/180°

C. πR²E/270°

D. πR²E/360°

What is the correct answer?

4

The elevation of the star at elongation is obtained by

A. sin α = sin φ cosec δ

B. sin α = sin φ sec δ

C. sin α = cos φ sec δ

D. sin α = cos φ cosec δ

What is the correct answer?

4

At western elongation, the pole star moves

A. Eastward

B. Westward

C. Northward

D. Southward

What is the correct answer?

4

The principal plane contains

A. Nadir point

B. Iso centre

C. Principal point

D. All the above

What is the correct answer?

4

The want of correspondence in stereo-photographs

A. Is a good property

B. Is a function of tilt

C. Is not affected by the change of flying height between photographs

D. Is minimum when θ is 3°

What is the correct answer?

4

The angle between the direction of star and the direction of earth's axis of rotation is called

A. Co-declination

B. Co-latitude

C. Declination

D. Latitude

What is the correct answer?

4

Homologous point is

A. Photo principal point

B. Ground principal point

C. Ground isocenter

D. All the above

What is the correct answer?

4

Right ascension of a heavenly body is its equatorial angular distance measured

A. Westward from the first point of Libra

B. Eastward from the first point of Aeries

C. Westward from the first point of Aeries

D. Eastward from the first point of Libra

What is the correct answer?

4

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

A. sin c sin B

B. cos c cos B

C. tan c tan B

D. sin c cos B

What is the correct answer?

4

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

A. Focal length of the camera

B. Overall size of the photo graphs

C. Percentage of overlap

D. All the above

What is the correct answer?

4

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

A. Principal distance

B. Principal line

C. Isocentric distance

D. Focal length

What is the correct answer?

4

At the first point of Aeries, the sun moves

A. Northward

B. Southward

C. From south to north of the equator

D. From north to south of the equator

What is the correct answer?

4

The stereo plotting instruments are generally manufactured on the principle of

A. Optical projection

B. Optical mechanism projection

C. Mechanical projection

D. All the above

What is the correct answer?

4

The nearest star is so far away from the earth that the directions to it from two diametrically opposite points on the earth differs less than

A. 0.01 second

B. 0.001 second

C. 0.0001 second

D. None of these

What is the correct answer?

4

To have greatest coverage of the area, the type of photography used, is

A. High oblique

B. Low oblique

C. Vertical

D. None of these

What is the correct answer?

4

Longitude of a place is the angular distance between the meridian of the place and

A. The standard meridian

B. The international date line

C. That of Greenwich

D. Both (a) and (c) of above

What is the correct answer?

4

When a star is between the pole and the horizon, the relationship between latitude (λ), zenith distance (z) and declination δ, is

A. θ = z + δ

B. θ = δ - z

C. θ = 180° - (z + δ)

D. θ = (z + δ) - 180°

What is the correct answer?

4

The plane at right angle to the zenith-nadir line and passing through the centre of the earth, is called

A. Rational horizon

B. True horizon

C. Celestial horizon

D. All the above

What is the correct answer?

4

In field astronomy, the quantities observed are entirely

A. Lengths

B. Angles

C. Heights

D. All of these

What is the correct answer?

4

The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is

A. f/H sec θ

B. f sec θ/H

C. f/H

D. f/H cos ½θ

What is the correct answer?

4

If a star whose declination is 60° N culminates at zenith, its altitude at the lower culmination, is

A. 10°

B. 20°

C. 30°

D. 40°

What is the correct answer?

4

The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as

A. Satellite station

B. Eccentric station

C. False station

D. Pivot station

What is the correct answer?

4

A plate parallel is the line on the plane of the negative

A. Parallel to the principal line

B. Perpendicular to the principal line

C. Along the bisector of the angle between the principal line and a perpendicular line through principal plane

D. None of these

What is the correct answer?

4

Pick up the incorrect statement from the following. The angular distance of heavenly bodies on observer's meridian measured from the pole, is

A. Co-declination

B. Co-altitude

C. Co-latitude

D. Polar distance

What is the correct answer?

4

Pick up the incorrect statement from the following. In a spherical triangle

A. Every angle is less than two right angles

B. Sum of the three angles is equal to two right angles

C. Sum of the three angles less than six right angles and greater than two right angles

D. Sum of any two sides is greater than the third

What is the correct answer?

4

The angle between the axis of earth and the vertical at the station of observation is called

A. Astronomical latitude

B. Astronomical co-latitude

C. Co-declination of star

D. Declination of star

What is the correct answer?

4

The position of the sun when its north declination is maximum is known as

A. Vernal equinox

B. Autumnal equinox

C. Summer solstice

D. Winter solstice

What is the correct answer?

4

Homologous points are

A. Opposite corners of a photograph

B. Nodal points of the camera lens

C. Corresponding points on the ground and photograph

D. Plumb points of stereo pair of photographs