MCQOPTIONS
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MCQOPTIONS
This section includes 410 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is |
| A. | 0.1 |
| B. | 0.4 |
| C. | 0.6 |
| D. | 1.33 |
| Answer» C. 0.6 | |
| 252. |
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. | |
| 253. |
The normal longitudinal overlap is generally kept |
| A. | 50 % |
| B. | 60 % |
| C. | 70 % |
| D. | 75 % |
| Answer» C. 70 % | |
| 254. |
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 |
| Answer» D. Plumb points of stereo pair of photographs | |
| 255. |
Parallax bar measures |
| A. | Parallax |
| B. | Height |
| C. | Parallax difference |
| D. | Height difference |
| Answer» D. Height difference | |
| 256. |
Pick up the incorrect statement from the following. High oblique photographs |
| A. | May have tilt up to 30° |
| B. | May include the image of the horizon |
| C. | May not include the image of the horizon |
| D. | None of these |
| Answer» E. | |
| 257. |
The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as |
| A. | Isocenter |
| B. | Principal point |
| C. | Perspective centre |
| D. | Plumb line |
| Answer» C. Perspective centre | |
| 258. |
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 | |
| 259. |
The value of geocentric parallax to be added to the observed altitude of sun is |
| A. | 9" cos α |
| B. | 9" sin α |
| C. | 9" tan α |
| D. | 9" cot α |
| Answer» B. 9" sin α | |
| 260. |
According to Napier's Rules of circular parts for a right angled triangle, sine of middle part equals the product of |
| A. | Tangents of two adjacent parts |
| B. | Sines of two adjacent parts |
| C. | Cosines of two adjacent parts |
| D. | Both (A) and (B) above |
| Answer» E. | |
| 261. |
Limiting gradient for locating the base line on evenly-sloping ground, is |
| A. | 1 in 12 |
| B. | 1 in 10 |
| C. | 1 in 8 |
| D. | 1 in 6 |
| Answer» B. 1 in 10 | |
| 262. |
There are two stations A and B. Which of the following statements is correct? |
| A. | The fore bearing of AB is AB |
| B. | The back bearing of AB is BA |
| C. | The fore and back bearings of AB differ by 180° |
| D. | All the above |
| Answer» E. | |
| 263. |
G.M.T. corresponding to given mean time, equals |
| A. | L.M.T. - East longitude in time |
| B. | L.M.T. + East longitude in time |
| C. | L.M.T. - West longitude in time |
| D. | None of these |
| Answer» B. L.M.T. + East longitude in time | |
| 264. |
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 | |
| 265. |
If v, t and f/H are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement |
| A. | i = v. t. H/f |
| B. | i = v. f/t. H |
| C. | i = v. t. (f/H) |
| D. | i = t. H/v. f |
| Answer» D. i = t. H/v. f | |
| 266. |
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. | |
| 267. |
The sensitivity of a bubble tube can be increased by |
| A. | increasing the diameter of the tube |
| B. | decreasing the length of bubble |
| C. | increasing the viscosity of liquid |
| D. | decreasing the radius of curvature of tube |
| Answer» B. decreasing the length of bubble | |
| 268. |
In the quadrantal bearing system, a whole circle bearing of 293° 30′ can be expressed as |
| A. | W23°30’N |
| B. | N66°30’W |
| C. | S113°30’N |
| D. | N23°30’W |
| Answer» C. S113°30’N | |
| 269. |
The maximum tolerance in a 20 m chain is |
| A. | ±2 mm |
| B. | ±3 mm |
| C. | ±5 mm |
| D. | ±8 mm |
| Answer» D. ±8 mm | |
| 270. |
Intersection method of detailed plotting is most suitable for |
| A. | forests |
| B. | urban areas |
| C. | hilly areas |
| D. | plains |
| Answer» D. plains | |
| 271. |
Homologous point is |
| A. | Photo principal point |
| B. | Ground principal point |
| C. | Ground isocenter |
| D. | All the above |
| Answer» E. | |
| 272. |
Different grades are joined together by a |
| A. | Compound curve |
| B. | Transition curve |
| C. | Reverse curve |
| D. | Vertical curve |
| Answer» E. | |
| 273. |
The maximum error in radial line assumption, is |
| A. | h/H f tan θ |
| B. | h/H f² tan θ |
| C. | h/H f² sin θ |
| D. | h/H f cos θ |
| Answer» B. h/H f² tan θ | |
| 274. |
The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The declination of the star, is |
| A. | 80° |
| B. | 70° |
| C. | 60° |
| D. | 50° |
| Answer» D. 50° | |
| 275. |
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 | |
| 276. |
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. | |
| 277. |
If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures is more than the sum of the east departures, the bearing of the closing line is in the |
| A. | NE quadrant |
| B. | SE quadrant |
| C. | NW quadrant |
| D. | SW quadrant |
| Answer» C. NW quadrant | |
| 278. |
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 |
| A. | Gauss' Mid Latitude formula |
| B. | D'Alembert's method |
| C. | Legendre's method |
| D. | Least square method |
| Answer» E. | |
| 279. |
Pick up the correct statement for horizontal photographs. |
| A. | Parallel lines do not appear parallel in central projection |
| B. | The two sides of a road meet at the vanishing point |
| C. | The lines parallel to the negative plane are projected as parallel lines |
| D. | All the above |
| Answer» E. | |
| 280. |
The difference between a level line and a horizontal line is that |
| A. | level line is a curved line while hori-zontal line is a straight line |
| B. | level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line |
| C. | horizontal line is normal to plumb line while level line may not be normal to the plumb line |
| D. | both are same |
| Answer» B. level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line | |
| 281. |
Which of the following methods of offsets involves less measurement on the ground? |
| A. | method of perpendicular offsets |
| B. | method of oblique offsets |
| C. | method of ties |
| D. | all involve equal measurement on the ground |
| Answer» B. method of oblique offsets | |
| 282. |
If θ and δ be the latitude of an observer and declination of a heavenly body respectively, the upper culmination of the body will be south of zenith if its zenith distance, is |
| A. | δ - θ |
| B. | θ - δ |
| C. | θ + δ |
| D. | ½ (θ - δ) |
| Answer» C. θ + δ | |
| 283. |
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. | |
| 284. |
Assuming human normal vision distance 25 cm, smallest measurable angle 20", and intraocular 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 | |
| 285. |
The great circle which passes through the zenith, nadir and the poles, is known as |
| A. | Meridian |
| B. | Vertical circle |
| C. | Prime vertical |
| D. | None of these |
| Answer» B. Vertical circle | |
| 286. |
The distance between the projection centre and the photograph, is called |
| A. | Principal distance |
| B. | Principal line |
| C. | Isocentric distance |
| D. | Focal length |
| Answer» B. Principal line | |
| 287. |
The orthogonal projection of the perspective centre on a tilted photograph, is called |
| A. | Nadir |
| B. | Isocenter |
| C. | Principal point |
| D. | Plumb point |
| Answer» D. Plumb point | |
| 288. |
The relief displacement of a building 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 | |
| 289. |
Sensitiveness of a level tube is designated by |
| A. | radius of level tube |
| B. | length of level tube |
| C. | length of bubble of level tube |
| D. | none of the above |
| Answer» B. length of level tube | |
| 290. |
The Polaris describes a small circle round the pole whose radius is approximately |
| A. | 1° |
| B. | 2° |
| C. | 3° |
| D. | 4° |
| Answer» B. 2° | |
| 291. |
The correction for parallax, is |
| A. | - 8".8 cos α |
| B. | + .8" sin α |
| C. | + 8".8 cos α |
| D. | - 8".8 cos α |
| Answer» D. - 8".8 cos α | |
| 292. |
The difference of height of two points whose parallax difference is 0.8 mm on a pair of stereo pair taken from a height ‘H’ is 100 m. If mean photo base is 95.2 mm, the flying height is |
| A. | 8,000 m |
| B. | 10,000 m |
| C. | 12,000 m |
| D. | 14,000 m |
| Answer» D. 14,000 m | |
| 293. |
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 | |
| 294. |
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 | |
| 295. |
If α is the observed altitude, the refraction correction in seconds, is |
| A. | 58" cot α |
| B. | 58" tan α |
| C. | 58 sin α |
| D. | 58 cos α |
| Answer» B. 58" tan α | |
| 296. |
The necessary geometrical condition for triangulation adjustment is: |
| A. | The sum of the angles around a station should be 360° |
| B. | The sum of the three angles of a plane triangle should be 180° |
| C. | The sum of the eight angles of a braced quadrilateral should be 360° |
| D. | All the above |
| Answer» E. | |
| 297. |
The following points form a pair of homologous points: |
| A. | Photo principal point and ground principal point |
| B. | Photo isocenter and ground isocenter |
| C. | Photo plumb point and ground plumb point |
| D. | All the above |
| Answer» E. | |
| 298. |
The angle of intersection of the two plane mirrors of an optical square is |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 90° |
| Answer» C. 60° | |
| 299. |
An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as |
| A. | contour line |
| B. | horizontal equivalent |
| C. | contour interval |
| D. | contour gradient |
| Answer» E. | |
| 300. |
For adjusting a quadrilateral whose both the diagonals are observed, the equations of conditions involved, are |
| A. | Two angle equations and two side equations |
| B. | One angle equation and three side equations |
| C. | Three angle equations and one side equation |
| D. | None of these |
| Answer» D. None of these | |