MCQOPTIONS
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MCQOPTIONS
This section includes 331 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
In an internal focussing type of telescope, the lens provided is$? |
| A. | concave |
| B. | convex |
| C. | plano-convex |
| D. | plano-concave |
| Answer» B. convex | |
| 252. |
If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is$? |
| A. | 77° N |
| B. | 23° S |
| C. | 13° E |
| D. | 13° W |
| Answer» D. 13¬¨‚àû W | |
| 253. |
Contour interval is$? |
| A. | Inversely proportional to the scale of the map |
| B. | Directly proportional to the flatness of ground |
| C. | Larger for accurate works |
| D. | Larger if the time available is more |
| Answer» B. Directly proportional to the flatness of ground | |
| 254. |
If θ and δ be the latitude of an observer and declination of a heavenly body respectively, the upper culmination of the body will be south of zenith if its zenith distance, is$? |
| A. | δ - θ |
| B. | θ - δ |
| C. | θ + δ |
| D. | ½ (θ - δ) |
| Answer» C. ≈í‚àè + ≈í¬• | |
| 255. |
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 ≈í¬± = sin ≈ì√ú sec ≈í¬• | |
| 256. |
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. | Isocenter |
| Answer» B. Plumb point | |
| 257. |
The angular distance of a heavenly body from the equator, measured along its meridian, is called? |
| A. | Declination |
| B. | Altitude |
| C. | Zenith distance |
| D. | Co-latitude |
| Answer» B. Altitude | |
| 258. |
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. | Vernal Equinox |
| D. | Both (B) and (C) of the above |
| Answer» E. | |
| 259. |
The process of turning the telescope about the vertical axis in horizontal plane is known as? |
| A. | transiting |
| B. | reversing |
| C. | plunging |
| D. | swinging |
| Answer» E. | |
| 260. |
The First Point of Aeries? |
| A. | Is the point in the celestial sphere where zero meridian crosses the celestial equator |
| B. | Is usually denoted by the Greek letter ? |
| C. | Is located near the very conspicuous rectangle of stars in the constellations of Pegasus and Andromeda |
| D. | All the above |
| Answer» E. | |
| 261. |
Systematic errors? |
| A. | Always follow some definite mathematical law |
| B. | Can be removed by applying corrections to the observed values |
| C. | Are also known as cumulative errors |
| D. | All the above |
| Answer» E. | |
| 262. |
A star in northern sphere is said to transit? |
| A. | When its altitude is maximum |
| B. | When its azimuth is 180° |
| C. | When it is in south |
| D. | All the above |
| Answer» E. | |
| 263. |
During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is? |
| A. | 4 chains |
| B. | 6 chains |
| C. | 120 m |
| D. | 180m |
| Answer» C. 120 m | |
| 264. |
In a tropical year, the numbers of sidereal days are? |
| A. | 365 |
| B. | 365.2224 |
| C. | 365.2422 |
| D. | 366.2422 |
| Answer» E. | |
| 265. |
For a well-conditioned triangle, no angle should be less than? |
| A. | 20° |
| B. | 30° |
| C. | 45° |
| D. | 60° |
| Answer» C. 45¬¨‚àû | |
| 266. |
The net ground area of a vertical photograph 20 cm √ó 20 cm on scale 1 : 10,000 having overlaps 60% and 30%, is? |
| A. | 0.50 sq km |
| B. | 0.56 sq km |
| C. | 0.60 sq km |
| D. | 0.64 sq km |
| Answer» E. | |
| 267. |
Stellar astronomy deals with? |
| A. | Plane surveying |
| B. | Geodetic surveying |
| C. | Star observations |
| D. | Planet observations |
| Answer» D. Planet observations | |
| 268. |
The chord of a curve less than peg interval, is known as? |
| A. | Small chord |
| B. | Sub-chord |
| C. | Normal chord |
| D. | Short chord |
| Answer» C. Normal chord | |
| 269. |
The distance between the minor control point and the principal point should be equal to? |
| A. | Base line of the left photograph of stereo pair |
| B. | Base line of the right photograph of stereo pair |
| C. | Sum of the base lines of stereo pair |
| D. | Mean of the base lines of the stereo pair |
| Answer» E. | |
| 270. |
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 ≈ì√ú . cot ≈í¬• | |
| 271. |
If two points differing by 1° of latitude and of the same longitude is 110 km apart on the earth, then two astronomical positions on the moon is about? |
| A. | 10 km |
| B. | 25 km |
| C. | 30 km |
| D. | 50 km |
| Answer» D. 50 km | |
| 272. |
Homologous point is? |
| A. | Photo principal point |
| B. | Ground principal point |
| C. | Ground isocenter |
| D. | All the above |
| Answer» E. | |
| 273. |
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 | |
| 274. |
Contour interval is? |
| A. | Inversely proportional to the scale of the map |
| B. | Directly proportional to the flatness of ground |
| C. | Larger for accurate works |
| D. | Larger if the time available is more |
| Answer» B. Directly proportional to the flatness of ground | |
| 275. |
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. ≈í‚àè + ≈í¬• | |
| 276. |
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 ≈í¬± = sin ≈ì√ú sec ≈í¬• | |
| 277. |
The product of the distances of plumb point and horizon point of a vertical photograph from its principal point, is? |
| A. | f2 |
| B. | 2f2 |
| C. | 3f2 |
| D. | ¬Ωf |
| Answer» B. 2f2 | |
| 278. |
The normal longitudinal overlap is generally kept? |
| A. | 50 % |
| B. | 60 % |
| C. | 70 % |
| D. | 75 % |
| Answer» C. 70 % | |
| 279. |
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. ≈í¬™ = 90¬¨‚àû - ≈í¬± | |
| 280. |
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 | |
| 281. |
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. | |
| 282. |
The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The latitude of the place, is? |
| A. | 80° |
| B. | 70° |
| C. | 60° |
| D. | 40° |
| Answer» E. | |
| 283. |
If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is? |
| A. | 7.5 m |
| B. | 25 m |
| C. | 50 m |
| D. | 75 m |
| Answer» E. | |
| 284. |
The zenith is the point on the celestial sphere? |
| A. | East of observer |
| B. | West of observer |
| C. | North of observer |
| D. | South of observer |
| Answer» E. | |
| 285. |
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 | |
| 286. |
International Date Line is located along? |
| A. | Standard meridian |
| B. | Greenwich meridian |
| C. | Equator |
| D. | 180° longitude |
| Answer» E. | |
| 287. |
Direct method of contouring is? |
| A. | a quick method |
| B. | adopted for large surveys only |
| C. | most accurate method |
| D. | suitable for hilly terrains |
| Answer» D. suitable for hilly terrains | |
| 288. |
In an internal focussing type of telescope, the lens provided is? |
| A. | concave |
| B. | convex |
| C. | plano-convex |
| D. | plano-concave |
| Answer» B. convex | |
| 289. |
If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is? |
| A. | 77° N |
| B. | 23° S |
| C. | 13° E |
| D. | 13° W |
| Answer» D. 13¬¨‚àû W | |
| 290. |
Accidental errors? |
| A. | Do not follow any definite mathematical law |
| B. | Cannot be removed by applying corrections to the observed values |
| C. | Are generally small |
| D. | All the above |
| Answer» E. | |
| 291. |
The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is? |
| A. | B = bH/f |
| B. | B =f/bH |
| C. | B = b/fH |
| D. | B = H/bf |
| Answer» B. B =f/bH | |
| 292. |
The true and mean suns occupy the same meridian at the same time on? |
| A. | April 15 |
| B. | June 14 |
| C. | September 1 |
| D. | All the above |
| Answer» E. | |
| 293. |
The declination and right ascension of the sun becomes 23° 27' N and 90° respectively on? |
| A. | March 21 |
| B. | June 21 |
| C. | September 21 |
| D. | December 22 |
| Answer» C. September 21 | |
| 294. |
In the double application of principle of reversion, the apparent error is? |
| A. | equal to true error |
| B. | half the true error |
| C. | two times the true error |
| D. | four times the true error |
| Answer» E. | |
| 295. |
The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is? |
| A. | f/H sec θ |
| B. | f sec θ/H |
| C. | f/H |
| D. | f/H cos ½θ |
| Answer» C. f/H | |
| 296. |
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 |
| Answer» B. Co-altitude | |
| 297. |
A negative declination shows that the magnetic meridian is to the? |
| A. | eastern side of the true meridian |
| B. | western side of the true meridian |
| C. | southern side of the true meridian |
| D. | none of the above |
| Answer» C. southern side of the true meridian | |
| 298. |
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 | |
| 299. |
The correction for sag is? |
| A. | always additive |
| B. | always subtractive |
| C. | always zero |
| D. | sometimes additive and sometimes subtractive |
| Answer» C. always zero | |
| 300. |
Which of the following errors can be eliminated by taking mean of bot face observations ? |
| A. | error due to imperfect graduations |
| B. | error due to eccentricity of verniers |
| C. | error due to imperfect adjustment of plate levels |
| D. | error due to line of collimation not being perpendicular to horizontal axis |
| Answer» E. | |