A Nautical mile is
1.One minute arc of the great circle passing through two points
2.One minute arc of the longitude
3.1855.109 m
4.All of the above
Posted Date:-2021-11-28 02:53:01
Circumpolar stars
1. Rotate round the North Pole
2. Rotate round the celestial pole
3.Remain always above the horizon
4.Are seldom seen near the pole star
Posted Date:-2021-11-28 08:29:07
If 16 flight lines are run perpendicular to an area 30 km wide, their spacings on a photographical map on scale 1 : 50,000 , will be
1.1 cm
2.2 cm
3.3 cm
4.4 cm
Posted Date:-2021-11-28 08:16:29
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by
1. sin z = sec φ . cos δ
2. cos z = sec φ . cos δ
3. tan z = sec φ . cos δ
4.None of these
Posted Date:-2021-11-28 03:06:02
If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is
1.πR²E/90°
2. πR²E/180°
3. πR²E/270°
4.πR²E/360°
Posted Date:-2021-11-28 08:36:49
If θ and δ be the latitude of a place and declination of a star respectively, the upper culmination of the star will be north of zenith if its zenith distance, is
1.δ - θ
2.θ - δ
3. θ + δ
4.(θ + δ)/2
Posted Date:-2021-11-28 02:42:58
In observations of equal precision, the most probable values of the observed quantities are those that render the sum of the squares of the residual errors a minimum, is the fundamental principle of
1. Gauss' Mid Latitude formula
2.D'Alembert's method
3. Legendre's method
4.Least square method
Posted Date:-2021-11-28 08:07:37
Pick up the correct statement from the following:
1.Ursa Minor's remains always north of pole star
2.Polar star remains always north of Polaris
3. Polaris remains always north of Ursa Minor's
4.Ursa Minor's pole star and Polaris are the names of the same star
Posted Date:-2021-11-28 04:27:48
Pick up the correct statement from the following:
1.The measured stereoscopic base of photographs is obtained by dividing the air base in metres by the mean scale of the photograph
2.The difference between the absolute parallax of two points depends upon the difference in their elevations
3.The line joining the principal point of a photograph and the transferred principal point of the adjoining photograph, is called stereoscopic base
4.All of the above
Posted Date:-2021-11-28 04:29:39
Pick up the correct statement from the following:
1. The sun's right ascension increases for 0 h to 24 h when it returns to the First point of Aries
2.The maximum declination of the sun increases up to 23½° N on about 21st June
3. The minimum declination of the sun is zero' on 22nd September
4.All of the above
Posted Date:-2021-11-28 04:31:27
Pick up the correct statement from the following:
1.Sidereal time at any instant is equal to the hour angle of the first point of Aries
2. Local sidereal time of any place is equal to the right ascension of its meridian
3. Sidereal time is equal to the right ascension of a star at its upper transit
4.All of the above
Posted Date:-2021-11-28 04:34:12
Pick up the incorrect statement from the following:
1. In truly vertical photographs without relief angles are true at the plumb point
2.In tilted photographs without relief, angles are true at the iso-centre
3.In tilled photographs with relief, angles are true at the principal point
4.None of these
Posted Date:-2021-11-28 08:30:29
Rotation of the camera at exposure about horizontal axis normal to the line of flight, is known as
1.Swing
2.Tilt
3. Tip
4.None of these
Posted Date:-2021-11-28 08:06:06
The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The latitude of the place, is
1.80°
2.70°
3. 60°
4.40°
Posted Date:-2021-11-28 04:36:44
The angular distance of a heavenly body from the equator, measured along its meridian, is called
1.Declination
2.Altitude
3.Zenith distance
4.Co-latitude
Posted Date:-2021-11-28 08:12:33
The coverage is least if photography is
1.High oblique
2.Low oblique
3.Vertical
4.None of these
Posted Date:-2021-11-28 03:31:27
The declination and right ascension of the sun becomes 23° 27' N and 90° respectively on
1.March 21
2.June 21
3.September 21
4. December 22
Posted Date:-2021-11-28 08:47:58
The latitude (λ) of a place and the altitude (α) of the pole are related by
1.λ = α
2.λ = 90° - α
3.λ = α - 90°
4.λ = 180° - α
Posted Date:-2021-11-28 03:33:12
The latitude (λ) of a place and the altitude (α) of the pole are related by
1.λ = α
2.λ = 90° - α
3.λ = α - 90°
4.λ = 180° - α
Posted Date:-2021-11-28 03:35:50
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
1. 0.01 second
2.0.001 second
3.0.0001 second
4.None of these
Posted Date:-2021-11-28 08:32:01
The plane at right angle to the zenith-nadir line and passing through the centre of the earth, is called
1. Rational horizon
2. True horizon
3.Celestial horizon
4.All of the above
Posted Date:-2021-11-28 04:39:00
The slotted template method
1.Is prepared, by graphical method
2.Is suitable for large areas with less control
3. Is rapid and accurate
4.All of the above
Posted Date:-2021-11-28 02:46:40
A plate parallel is the line on the plane of the negative
1.Parallel to the principal line
2.Perpendicular to the principal line
3.Along the bisector of the angle between the principal line and a perpendicular line through principal plane
4.None of these
Posted Date:-2021-11-28 08:09:50
Accidental errors
1.Do not follow any definite mathematical law
2.Cannot be removed by applying corrections to the observed values
3.Are generally small
4.All of the above
Posted Date:-2021-11-28 08:38:14
According to Napier's Rules of circular parts for a right angled triangle, sine of middle part equals the product of
1.Tangents of two adjacent parts
2. Sines of two adjacent parts
3.Cosines of two adjacent parts
4. Both (A) and (B) above
Posted Date:-2021-11-28 08:39:49
An aerial photograph may be assumed as
1.Parallel projection
2.Orthogonal projection
3.Central projection
4.None of these
Posted Date:-2021-11-28 02:45:33
At eastern elongation, the pole star moves
1.Eastward
2.Westward
3.Northward
4.Southward
Posted Date:-2021-11-28 08:34:23
At the first point of Aeries, the sun moves
1.Northward
2.Southward
3.From south to north of the equator
4. From north to south of the equator
Posted Date:-2021-11-28 02:39:34
For adjusting a quadrilateral whose both the diagonals are observed, the equations of conditions involved, are
1.Two angle equations and two side equations
2.One angle equation and three side equations
3. Three angle equations and one side equation
4.None of these
Posted Date:-2021-11-28 08:21:25
G.M.T. corresponding to given mean time, equals
1. L.M.T. - East longitude in time
2.L.M.T. + East longitude in time
3.L.M.T. - West longitude in time
4.None of these
Posted Date:-2021-11-28 08:02:46
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
1.f sin θ
2.f cos θ
3. f tan θ
4.f sec θ
Posted Date:-2021-11-28 03:30:24
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by
1.sin H = tan φ . cot δ
2.cos H = tan φ . cot δ
3.tan H = tan φ . cot δ
4.None of these
Posted Date:-2021-11-28 03:29:12
If the distance between the projectors is altered by a movement along X-axis of one projector,
1. The length of the air base is increased
2.The scale of the model is altered
3. y-parallax is not affected
4.All of the above
Posted Date:-2021-11-28 02:37:41
If the general ground level of any area is 10% of the flying height, the principal points may be used as the centers of radial directions for small scale mapping even in tilted photograph up to
1.1°
2. 2°
3.3°
4. 4°
Posted Date:-2021-11-28 04:38:05
Limiting gradient for locating the base line on evenly-sloping ground, is
1.1 in 12
2.1 in 10
3.1 in 8
4.1 in 6
Posted Date:-2021-11-28 06:47:58
Longitudes are measured from 0° to
1. 180° eastward
2.180° westward
3.180° east or westward
4.360° eastward
Posted Date:-2021-11-28 08:33:20
On vertical photographs, height displacement is
1.Positive for points above datum
2.Negative for points below datum
3.Zero for points vertically below the air station
4.All of the above
Posted Date:-2021-11-28 02:38:32
Pick up the correct statement for horizontal photographs.
1.Parallel lines do not appear parallel in central projection
2. The two sides of a road meet at the vanishing point
3. The lines parallel to the negative plane are projected as parallel lines
4.All of the above
Posted Date:-2021-11-28 02:49:47
Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.
1.By subtracting their longitudes if places are in the same hemisphere
2.By adding their longitudes if places are in the different hemispheres
3.By subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres
4.All of the above
Posted Date:-2021-11-28 08:14:21
Pick up the correct statement from the following:
1. Aerial photographs may be either vertical or oblique
2.Vertical photographs are taken with the axis of camera pointing vertically downward
3.Vertical photographs are used for most accurate maps
4.All the above
Posted Date:-2021-11-28 04:26:11
Pick up the correct statement from the following:
1. The vertical plane containing the zenith, the station of observation and the celestial pole is the observer's meridian plane
2.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
3.The complement of the altitude of star is called the zenith distance of the star
4.All the above
Posted Date:-2021-11-28 02:34:11
Pick up the correct statement from the following:
1.The horizontal direction of the pole is called astronomical north
2.The angle between the direction of true north and the direction of a survey line is called astronomical bearing
3. The astronomical bearing is generally called azimuth
4.All of the above
Posted Date:-2021-11-28 02:52:03
Pick up the correct statement from the following:
1.Centre of the celestial sphere is taken as the position of the observer
2.Centre of the celestial sphere is taken as the centre of the earth
3.Stars move and maintain their relative positions
4.All of the above
Posted Date:-2021-11-28 02:53:57
Pick up the correct statement from the following:
1.One degree of longitude has greatest value at the equator
2.One degree of longitude has greatest value at the poles
3.One degree of longitude has the same value everywhere
4.One degree of latitude decreases from the equator to the poles
Posted Date:-2021-11-28 03:05:14
Pick up the correct statement from the following:
1.If the applied tension to the tape is more than the standard, the tension correction is positive
2.If the applied tension to the tape is less than the standard, the tension correction is negative
3.If the temperature during measurement is greater than the standard temperature, the temperature correction is positive
4.All of the above
Posted Date:-2021-11-28 04:33:06
Pick up the correct statement from the following:
1. North end of the polar axis is known as North Pole
2.South end of the polar axis is known as South Pole
3.Point where polar axis when produced northward intersects the celestial sphere, is known as north celestial pole
4.All of the above
Posted Date:-2021-11-28 08:42:39
Pick up the in-correct statement from the following:
1.Correction for refraction is always negative
2.Correction for parallax is always positive
3. Correction for semi-diameter is always negative
4.Correction for dip is always negative
Posted Date:-2021-11-28 02:41:43
Pick up the incorrect statement from the following. High oblique photographs
1.May have tilt up to 30°
2.May include the image of the horizon
3.May not include the image of the horizon
4.None of these
Posted Date:-2021-11-28 03:08:50
Pick up the incorrect statement from the following:
1.Latitudes north of the equator are taken as positive
2. Latitudes south of the equator are taken as negative
3.Longitudes east of Greenwich are taken as negative
4.Longitudes west of Greenwich are taken as positive
Posted Date:-2021-11-28 04:30:33
Polaris is usually observed for the determination of the latitude when it is
1.At culmination
2.At elongation
3.Neither at culmination nor at elongation
4.Either at culmination or at elongation
Posted Date:-2021-11-28 02:32:53
The angle between the axis of earth and the vertical at the station of observation is called
1.Astronomical latitude
2. Astronomical co-latitude
3. Co-declination of star
4.Declination of star
Posted Date:-2021-11-28 08:44:02
The angle between the direction of star and the direction of earth's axis of rotation is called
1.Co-declination
2.Co-latitude
3.Declination
4.Latitude
Posted Date:-2021-11-28 02:31:40
The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called
1.Visible horizon
2.Sensible horizon
3. Celestial horizon
4.True horizon
Posted Date:-2021-11-28 06:49:14
The correction for parallax, is
1. - 8".8 cos α
2. + .8" sin α
3. + 8".8 cos α
4. - 8".8 cos α
Posted Date:-2021-11-28 08:41:17
The difference in longitude of two places expressed in time is equal to the difference in their
1.Sidereal time
2.Apparent solar time
3.Mean solar time
4.All of the above
Posted Date:-2021-11-28 02:40:30
The displacement of the pictured position of a point of h elevation on a vertical photograph taken with a camera of 30 cm focal length, from an altitude of 3000 m, is
1.4.4 mm
2.5.5 mm
3. 6.5 mm
4.7.5 mm
Posted Date:-2021-11-28 02:50:59
The distance between the projection centre and the photograph, is called
1.Principal distance
2. Principal line
3.Isocentric distance
4.Focal length
Posted Date:-2021-11-28 08:35:26
The following points form a pair of homologous points:
1.Photo principal point and ground principal point
2.Photo isocenter and ground isocenter
3.Photo plumb point and ground plumb point
4.All of the above
Posted Date:-2021-11-28 04:28:46
The hour angle of the heavenly body for Greenwich meridian The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is
1. f/H sec θ
2.f sec θ/H
3. f/H
4.f/H cos ½θ
Posted Date:-2021-11-28 07:59:35
The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between
1. Horizon and equator
2.Equator and zenith
3.Zenith and pole
4.Pole and horizon
Posted Date:-2021-11-28 04:35:14
The latitude of the observer's position, is
1.Elevation of the elevated pole
2.Declination of the observer's zenith
3.Angular distance along the observer's meridian between equator and the observer
4.All of the above
Posted Date:-2021-11-28 02:47:35
The length of a parallel of λ latitude between two meridians is equal to difference in longitudes multiplied by
1. sin λ
2.cos λ
3.tan λ
4.cot λ
Posted Date:-2021-11-28 08:20:20
The main object of the astronomer to obtain
1. Astronomical latitude
2.Astronomical longitude
3.Astronomical bearing
4.All of the above
Posted Date:-2021-11-28 04:32:11
The method of surveying by triangulation was first introduced by the Dutchman Snell in
1.1600
2.1615
3.1630
4.1650
Posted Date:-2021-11-28 08:45:17
The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured
1. Normal to base line
2. Parallel to base line
3.Both (a) and (b)
4.Neither (a) nor (b)
Posted Date:-2021-11-28 03:39:21
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
1.Principal point
2.Isocenter
3.Plumb point
4. Perspective centre
Posted Date:-2021-11-28 02:35:22
The prime vertical passes through
1.The east point of the horizon
2.The west point of the horizon
3.The zenith point of the observer
4.All of the above
Posted Date:-2021-11-28 08:15:29
The principal line is the line joining the principal point and
1.Nadir
2.Isocenter
3.Perspective centre
4.None of these
Posted Date:-2021-11-28 03:38:20
The principal line is the line joining the principal point and
1.Nadir
2.Isocenter
3.Perspective centre
4.None of these
Posted Date:-2021-11-28 03:36:54
The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is
1.f/H sec θ
2. f sec θ/H
3. f/H
4. f/H cos ½θ
Posted Date:-2021-11-28 08:46:38
The scale of the photography taken from a height of 300 m, with a camera of focal length 15 cm, is
1. 1 : 10,000
2.1 : 15,000
3.1 : 20,000
4.1 : 30,000
Posted Date:-2021-11-28 08:04:25
The shortest distance between two places measured along the surface of the earth, is
1. Length of the equator between their longitudes
2.Length of the parallel between their longitudes
3.Length of the arc of the great circle passing through them
4.None of these
Posted Date:-2021-11-28 08:11:11
The sidereal day is the time interval between two successive upper transits of
1.Mean sun
2.First point of Aries
3.First point of Libra
4.The polar star
Posted Date:-2021-11-28 02:44:15
The station where observations are not made, but the angles at the station are used in triangulation series, is known as
1. Satellite station
2. Subsidiary station
3.Pivot station
4.Main station
Posted Date:-2021-11-28 02:36:31
The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as
1. Satellite station
2.Eccentric station
3.False station
4.Pivot station
Posted Date:-2021-11-28 08:08:39
The stereo plotting instruments are generally manufactured on the principle of
1.Optical projection
2.Optical mechanism projection
3.Mechanical projection
4.All of the above
Posted Date:-2021-11-28 04:35:56
Triangulation surveys are carried out for locating
1. Control points for surveys of large areas
2.Control points for photogrammetric surveys
3.Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
4.All of the above
Posted Date:-2021-11-28 02:48:35