195 + Mcqs in Advanced Surveying Page 3 McqOptions

101.	The polaris remains below horizon at
A.	10° N
B.	50° N Latitude
C.	equator
D.	5° S latitude.
Answer» E.

Discussion

102.	Circumpolar stars
A.	rotate round the north pole
B.	rotate round the celestial pole
C.	remain always above the horizon
D.	are seldom seen near the pole star
Answer» D. are seldom seen near the pole star

Discussion

103.	At western elongation, the pole star moves
A.	eastward
B.	westward
C.	northward
D.	southward.
Answer» E.

Discussion

104.	Places having same latitude
A.	lie on the parallel of the latitude
B.	are equidistant from the nearer pole
C.	are equidistant from both the poles
D.	all the above.
Answer» E.

Discussion

105.	The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between
A.	horizon and equator
B.	zenith and pole
C.	equator and zenith
D.	pole and horizon.
Answer» B. zenith and pole

Discussion

106.	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
A.	δ - θ
B.	θ - δ
C.	θ + δ
D.	(θ + δ)/2
Answer» B. θ - δ

Discussion

107.	By raising the z-column of right projector, maximum y-parallax is introduced in the model at
A.	position 1
B.	position 2
C.	position 4
D.	position 4 and 6.
Answer» E.

Discussion

108.	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.
Answer» E.

Discussion

109.	For plane ground the scale of a vertical photograph will be same as that of a tiled photograph along the photo parallel through
A.	isocentre
B.	plumb point
C.	principal point
D.	none of these.
Answer» B. plumb point

Discussion

110.	An aerial photograph may be assumed as
A.	parallel projection
B.	orthogonal projection
C.	central projection
D.	none of these.
Answer» D. none of these.

Discussion

111.	The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between
A.	horizon and equator
B.	equator and zenith
C.	zenith and pole
D.	pole and horizon.
Answer» D. pole and horizon.

Discussion

112.	The latitude (λ) of a place and the altitude (α) of the pole are related by
A.	λ = α
B.	λ = 90° - α
C.	λ = α - 90°
D.	λ = 180° - α.
Answer» B. λ = 90° - α

Discussion

113.	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.
Answer» E.

Discussion

114.	Assuming human normal vision distance 25 cm, smallest measurable angle 20", and introcular distance 6.5 cm, the smallest depth to be discerned is
A.	0.1 mm
B.	0.5 mm
C.	1.00 mm
D.	1.1 mm.
Answer» B. 0.5 mm

Discussion

115.	The solar tidal force divided by lunar tidal force is
A.	1/3
B.	1/2
C.	3/4
D.	5/4
Answer» C. 3/4

Discussion

116.	If the general ground level of any area is 10% of the flying height, the principal points may be used as the centres of radial directions for small scale mapping even in tilted photograph up to
A.	1°
B.	2°
C.	3°
D.	4°
Answer» D. 4°

Discussion

117.	In triangulation surveys
A.	the area is divided into triangular figures
B.	control stations are located from which detailed surveys are carried out
C.	sides are not measured excepting the base line
D.	all the above.
Answer» E.

Discussion

118.	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.
Answer» E.

Discussion

119.	Latitude of a place is the angular distance from
A.	Greenwich to the place
B.	equator to the poles
C.	equator to the nearer pole
D.	none of these.
Answer» E.

Discussion

120.	The point at which sun's declination changes from north to south, is known as
A.	first point of Aeries
B.	first point of Libra
C.	autumnal Equinox
D.	both (b) and (c) of the above.
Answer» E.

Discussion

121.	The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as
A.	photo plumb point
B.	plumb point
C.	nadir point
D.	isocentre
Answer» B. plumb point

Discussion

122.	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
A.	sin H = tan φ . cot δ
B.	cos H = tan φ . cot δ
C.	tan H = tan φ . cot δ
D.	none of these.
Answer» C. tan H = tan φ . cot δ

Discussion

123.	Triangulation surveys are carried out for locating
A.	control points for surveys of large areas
B.	control points for photogrammetric surveys
C.	engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
D.	all the above.
Answer» E.

Discussion

124.	The method of surveying by triangula-tion was first introduced by the Dutchman Snell in
A.	1600
B.	1615
C.	1630
D.	1650
Answer» C. 1630

Discussion

125.	From the principal point the horizon point lies on the principal line at a distance of
A.	f tan θ
B.	f sin θ
C.	f cot θ
D.	f cos θ.
Answer» B. f sin θ

Discussion

126.	The principal plane contains
A.	nadir point
B.	iso centre
C.	principal point
D.	all the above..
Answer» E.

Discussion

127.	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
A.	observation equation
B.	conditional equation
C.	normal equation
D.	none of these.
Answer» D. none of these.

Discussion

128.	The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is
A.	altitude and azimuth system
B.	declination and hour angle system
C.	declination and right ascension system
D.	declination and altitude system
Answer» D. declination and altitude system

Discussion

129.	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
A.	500 m
B.	1000 m
C.	1500 m
D.	2000 m.
Answer» C. 1500 m

Discussion

130.	Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.
A.	by subtracting their longitudes if places are in the same hemisphere
B.	by adding their longitudes if places are in the different hemispheres
C.	by subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres
D.	all the above.
Answer» D. all the above.

Discussion

131.	In a tropical year, the number of sidereal days, are
A.	365
B.	365.2224
C.	365.2422
D.	366.2422
Answer» E.

Discussion

132.	The declination and right ascension of the sun are each equal to zero on
A.	March 21
B.	June 21
C.	September 21
D.	December 22.
Answer» B. June 21

Discussion

133.	Spring tides are caused when
A.	sun and moon are in line with earth
B.	solar tidal force acts opposite to lunar tidal force
C.	solar tidal force and lunar tidal force both coincide
D.	none of these.
Answer» D. none of these.

Discussion

134.	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
A.	f sin θ
B.	f cos θ
C.	f tan θ
D.	f sec θ.
Answer» D. f sec θ.

Discussion

135.	If the distance between the projectors is altered by a movement along X-axis of one projector,
A.	the length of the air base is increased
B.	the scale of the model is altered
C.	y-parallax is not affected
D.	all the above.
Answer» E.

Discussion

136.	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.
Answer» B. sin α = sin φ sec δ

Discussion

137.	For mapping any country
A.	geodetic triangulation of greatest possible sides and accuracy is carried out
B.	primary triangles are broken down into secondary triangles of somewhat lesser accuracy
C.	secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys
D.	all the above.
Answer» E.

Discussion

138.	The angle between the plane of the equator and the plane of the ecliptic, is known as obliquity of the ecliptic and its value is
A.	22° 30'
B.	23° 27'
C.	23° 30'
D.	24° 0'.
Answer» C. 23° 30'

Discussion

139.	While making astronomical observations, the observer is mainly concerned with
A.	the direction of the vertical, the axis of rotation of the instrument
B.	the direction of the poles of the celestial sphere
C.	the direction of the star from the instrument
D.	all the above.
Answer» E.

Discussion

140.	The altitude of a heavenly body is its angular distance, measured on the vertical circle passing through the body, above
A.	equator
B.	horizon
C.	pole
D.	none of these.
Answer» C. pole

Discussion

141.	At lower culmination, the pole star moves
A.	eastward
B.	westward
C.	northward
D.	southward.
Answer» B. westward

Discussion

142.	In a truly vertical photograph,
A.	principal point coincides the isocentre
B.	iso-centre coincides the plumb point
C.	plumb point coincides the principal point
D.	all the above.
Answer» E.

Discussion

143.	If S is the sum of three angles of a spherical triangle, the spherical excess equals
A.	S - 90°
B.	S - 180°
C.	S - 270°
D.	S - 360°.
Answer» C. S - 270°

Discussion

144.	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
Answer» B. cos c cos B

Discussion

145.	The nautical mile is the length of
A.	1 minute of latitude
B.	1 minute of longitude
C.	1 degree of latitude
D.	1 degree of longitude.
Answer» C. 1 degree of latitude

Discussion

146.	The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is
A.	A
B.	B
C.	C
D.	D
Answer» C. C

Discussion

147.	To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30, 000, with a camera of 30 cm focal length, the flying height is
A.	4000 m
B.	5000 m
C.	6000 m
D.	7000 m.
Answer» D. 7000 m.

Discussion

148.	On vertical photographs, height displacement is
A.	positive for points above datum
B.	negative for points below datum
C.	zero for points vertically below the air station
D.	all the above.
Answer» E.

Discussion

149.	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.
Answer» E.

Discussion

150.	α and β are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being S and f respectively. Parallax displacement of the point due to relief, is
A.	A
B.	B
C.	C
D.	D
Answer» D. D

Discussion

Explore topic-wise MCQs in Surveying.

The polaris remains below horizon at

Circumpolar stars

At western elongation, the pole star moves

Places having same latitude

The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between

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

By raising the z-column of right projector, maximum y-parallax is introduced in the model at

The height displacement on a vertical photograph

For plane ground the scale of a vertical photograph will be same as that of a tiled photograph along the photo parallel through

An aerial photograph may be assumed as

The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between

The latitude (λ) of a place and the altitude (α) of the pole are related by

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

Assuming human normal vision distance 25 cm, smallest measurable angle 20", and introcular distance 6.5 cm, the smallest depth to be discerned is

The solar tidal force divided by lunar tidal force is

If the general ground level of any area is 10% of the flying height, the principal points may be used as the centres of radial directions for small scale mapping even in tilted photograph up to

In triangulation surveys

The stereo plotting instruments are generally manufactured on the principle of

Latitude of a place is the angular distance from

The point at which sun's declination changes from north to south, is known as

The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as

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

Triangulation surveys are carried out for locating

The method of surveying by triangula-tion was first introduced by the Dutchman Snell in

From the principal point the horizon point lies on the principal line at a distance of

The principal plane contains

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

The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is

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

Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.

In a tropical year, the number of sidereal days, are

The declination and right ascension of the sun are each equal to zero on

Spring tides are caused when

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

If the distance between the projectors is altered by a movement along X-axis of one projector,

The elevation of the star at elongation is obtained by

For mapping any country

The angle between the plane of the equator and the plane of the ecliptic, is known as obliquity of the ecliptic and its value is

While making astronomical observations, the observer is mainly concerned with

The altitude of a heavenly body is its angular distance, measured on the vertical circle passing through the body, above

At lower culmination, the pole star moves

In a truly vertical photograph,

If S is the sum of three angles of a spherical triangle, the spherical excess equals

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

The nautical mile is the length of

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

To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30, 000, with a camera of 30 cm focal length, the flying height is

On vertical photographs, height displacement is

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

α and β are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being S and f respectively. Parallax displacement of the point due to relief, is