MCQOPTIONS
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MCQOPTIONS
This section includes 358 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
An ideal vertical curve to join two gradients, is |
| A. | circular |
| B. | parabolic |
| C. | elliptical |
| D. | hyperbolic |
| Answer» C. elliptical | |
| 52. |
Diurnal variation of magnetic declination is |
| A. | greater at equator than nearer the poles |
| B. | less at equator than nearer the poles |
| C. | less in summer than in winter |
| D. | same at all latitudes and during different months. |
| Answer» C. less in summer than in winter | |
| 53. |
The latitude of a traverse leg is obtained by multiplying its length by |
| A. | tangent of its reduced bearing |
| B. | sign of its reduced bearing |
| C. | cosine of its reduced bearing |
| D. | cosecant of its reduced bearing. |
| Answer» D. cosecant of its reduced bearing. | |
| 54. |
For a curve of radius 100 m and normal chord 10 m, the Rankine's deflection angle, is |
| A. | 0°25'.95 |
| B. | 0°35'.95 |
| C. | 1°25'.53 |
| D. | 2°51'.53. |
| Answer» E. | |
| 55. |
In case of a double line river, contours are |
| A. | stopped at the banks of the river |
| B. | stopped at the edge of the river |
| C. | drawn across the water |
| D. | drawn by parabolic curves having their vertex at the centre of the water. |
| Answer» C. drawn across the water | |
| 56. |
The systematic errors which persist and have regular effects in the performance of a survey operation, are due to |
| A. | carelessness |
| B. | faulty instrument |
| C. | inattention |
| D. | none of these. |
| Answer» C. inattention | |
| 57. |
The theodolites used for making tacheometric observations by optical wedge system, are |
| A. | provided with stadia hairs in front of eye piece |
| B. | not provided with stadia hairs at all |
| C. | fitted with a glass wedge inside the telescope |
| D. | fitted with a glass wedge in front of telescope. |
| Answer» E. | |
| 58. |
Imaginary line passing through points having equal magnetic declination is termed as |
| A. | isogon |
| B. | agonic line |
| C. | isoclinic line |
| D. | none of these. |
| Answer» B. agonic line | |
| 59. |
A standard steel tape of length 30 m and cross-section 15 x 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of steel tape is 2.2 x 10⁶ kg/cm², the correction to be applied is |
| A. | - 0.000909 m |
| B. | + 0.0909 m |
| C. | 0.000909 m |
| D. | none of these |
| Answer» B. + 0.0909 m | |
| 60. |
Which of the following introduces an error of about 1 in 1000 if 20 m chain is used |
| A. | length of chain 20 mm wrong |
| B. | one end of the chain 0.9 m off the line |
| C. | one end of chain 0.9 m higher than the other |
| D. | all the above. |
| Answer» E. | |
| 61. |
The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is |
| A. | 28.8 secs |
| B. | 41.25 secs |
| C. | 14.52 secs |
| D. | 25.05 |
| Answer» C. 14.52 secs | |
| 62. |
For the construction of highway (or railway) |
| A. | longitudinal sections are required |
| B. | cross sections are required |
| C. | both longitudinal and cross sections are required |
| D. | none of these. |
| Answer» D. none of these. | |
| 63. |
In tangential tacheometry, an ordinary level staff is used |
| A. | leaning towards the instrument for inclined sights upward |
| B. | leaning away from the instrument for inclined sights downwards |
| C. | vertical in all cases |
| D. | none of these. |
| Answer» D. none of these. | |
| 64. |
The 'fix' of a plane table from three known points, is good, if |
| A. | middle station is nearest |
| B. | middle station is farthest |
| C. | either the right or left station is nearest |
| D. | none of these. |
| Answer» B. middle station is farthest | |
| 65. |
The staff intercept will be |
| A. | greater farther off the staff is held |
| B. | smaller, farther off the staff is held |
| C. | smaller, nearer the staff is held |
| D. | same, wherever the staff is held. |
| Answer» C. smaller, nearer the staff is held | |
| 66. |
The longitudinal section of the surface of bubble tube is |
| A. | straight |
| B. | circular |
| C. | parabolic |
| D. | elliptic. |
| Answer» C. parabolic | |
| 67. |
The operation of resection involves the following steps1. rough orientation of the plane table2. the three lines form a triangle of error3. drawing lines back through the three control points4. select a point in the triangle of error such that each ray is equally rotated either clockwise or anti clockwise5. the points obtained by three rays is the correct location.The correct sequence is |
| A. | 1, 3, 2, 4, 5 |
| B. | 1, 2, 3, 4, 5 |
| C. | 1, 4, 3, 2, 5 |
| D. | 1, 4, 2, 3, 5 |
| Answer» B. 1, 2, 3, 4, 5 | |
| 68. |
While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be |
| A. | 0.02 cm |
| B. | 0.15 cm |
| C. | 02 cm |
| D. | 0.1 cm |
| Answer» C. 02 cm | |
| 69. |
Total latitude of a point is positive if it lies |
| A. | north of the reference parallel |
| B. | south of the reference parallel |
| C. | east of the reference parallel |
| D. | west of the reference parallel. |
| Answer» B. south of the reference parallel | |
| 70. |
Contour lines of different elevations can unite to form one line, only in the case of |
| A. | a vertical cliff |
| B. | a saddle |
| C. | a water shed line |
| D. | a hill top. |
| Answer» B. a saddle | |
| 71. |
The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as |
| A. | Plane alidade |
| B. | telescopic alidade |
| C. | clinometer |
| D. | tacheometer. |
| Answer» C. clinometer | |
| 72. |
If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum deflection angle to locate its junction point, is |
| A. | 1°43' 08" |
| B. | 1°43' 18" |
| C. | 1°43' 28" |
| D. | 1°43' 38" |
| Answer» D. 1°43' 38" | |
| 73. |
A back sight |
| A. | is always taken on a point of known elevation or can be computed |
| B. | is added to the known level to obtain the instrument height |
| C. | taken on an inverted staff is treated as negative |
| D. | all the above. |
| Answer» E. | |
| 74. |
The intercept of a staff |
| A. | is maximum if the staff is held truly normal to the line of sight. |
| B. | is minimum if the staff is held truly normal to the line of sight. |
| C. | decreases if the staff is tilted away from normal |
| D. | increases if the staff is tilted towards normal. |
| Answer» C. decreases if the staff is tilted away from normal | |
| 75. |
While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates |
| A. | the rotation axis is vertical |
| B. | the trummion axis is horizontal |
| C. | the line of collimation is perpendicular to vertical axis |
| D. | none of the above |
| Answer» B. the trummion axis is horizontal | |
| 76. |
Deviation of the actual road gradient from the proposed contou'r gradient up hill side, involves |
| A. | embankment on the centre line |
| B. | excavation on the centre line |
| C. | earth work on the centre line |
| D. | none of these. |
| Answer» C. earth work on the centre line | |
| 77. |
The bearing of C from A is N 30° E and from B, 50 metres east of A, is N 60° W. The departure of C from A is |
| A. | 50 m |
| B. | 50 √3 m |
| C. | 25 √3 m |
| D. | 25 m |
| Answer» E. | |
| 78. |
If the radius of a simple curve is 600 m, the maximum length of the chord for calculating offsets, is taken |
| A. | 10 m |
| B. | 15 m |
| C. | 20 m |
| D. | 30 m. |
| Answer» E. | |
| 79. |
In precision theodolite traverse if included angles are read twice and the mean reading accepted using both verniers having a least count of 30". Assuming the instrument to be in perfect adjustment, linear measurements correct to 6 mm per 30 metre tape duly corrected for temperature, slope and sag, the angular error of closure not to exceed (where n is the number of traverse legs) |
| A. | 50" √n |
| B. | 30" √n |
| C. | 60" √n. |
| D. | None of these |
| Answer» B. 30" √n | |
| 80. |
You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of |
| A. | repetition |
| B. | reiteration |
| C. | double observations |
| D. | exactness. |
| Answer» B. reiteration | |
| 81. |
The boundary of water of a still lake, represents |
| A. | level surface |
| B. | horizontal surface |
| C. | contour line |
| D. | a concave surface. |
| Answer» D. a concave surface. | |
| 82. |
A lemniscate curve between the tangents will be transitional throughout if the polar deflection angle of its apex, is |
| A. | Δ/2 |
| B. | Δ/3 |
| C. | Δ/4 |
| D. | Δ/6 |
| Answer» E. | |
| 83. |
On a diagonal scale, it is possible to read up to |
| A. | one dimension |
| B. | two dimensions |
| C. | three dimensions |
| D. | four dimensions. |
| Answer» D. four dimensions. | |
| 84. |
The construction of optical square is based, on the principle of optical |
| A. | reflection |
| B. | refraction |
| C. | double refraction |
| D. | double reflection. |
| Answer» E. | |
| 85. |
In a theodolite |
| A. | the telescope axis is perpendicular to transit axis |
| B. | the axis of rotation is perpendicular to transit axis |
| C. | the telescope axis, the transit axis and the rotation axis pass through the centre of theodolite |
| D. | all the above. |
| Answer» E. | |
| 86. |
The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto |
| A. | 5" |
| B. | 10" |
| C. | 15" |
| D. | 20" |
| Answer» E. | |
| 87. |
If D is the degree of the curve of radius R, the exact length of its specified chord, is |
| A. | radius of the curve x sine of half the degree |
| B. | diameter of the curve x sine of half the degree |
| C. | diameter of the curve x cosine of half the degree |
| D. | diameter of the curve x tangent of half the degree. |
| Answer» C. diameter of the curve x cosine of half the degree | |
| 88. |
ABCD is a rectangular plot of land. If the bearing of the side AB is 75°, the bearing of DC is |
| A. | 75° |
| B. | 255° |
| C. | 105° |
| D. | 285° |
| Answer» B. 255° | |
| 89. |
Rankine's deflection angle in minutes is obtained by multiplying the length of the chord by |
| A. | degree of the curve |
| B. | square of the degree of the curve |
| C. | inverse of the degree of the curve |
| D. | none of these. |
| Answer» B. square of the degree of the curve | |
| 90. |
The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is |
| A. | reciprocal levelling |
| B. | precise levelling |
| C. | differential levelling |
| D. | flying levelling |
| Answer» B. precise levelling | |
| 91. |
The ratio of the distances at which a stated length can be distinguished by the telescope and the human eye, respectively, is called |
| A. | brightness of telescope |
| B. | magnification of telescope |
| C. | resolving power of telescope |
| D. | none of these. |
| Answer» D. none of these. | |
| 92. |
If the long chord and tangent length of a circular curve of radius R are equal the angle of deflection, is |
| A. | 30° |
| B. | 60° |
| C. | 90° |
| D. | 120° |
| Answer» E. | |
| 93. |
If vertical angles of inclined sights do not exceed 10° and non-verticality of the staff remains within 1°, stadia system of tacheometric observations are made on |
| A. | staff normal |
| B. | staff vertical |
| C. | staff normal as well as vertical |
| D. | none of these. |
| Answer» B. staff vertical | |
| 94. |
Flint glass |
| A. | has slightly the greater refracting power than crown glass |
| B. | has roughly double refracting power than that of crown |
| C. | and crown glass proportions yield the required focal length and neutralise the dispersion produced by the convex lens at the emergence from the concave |
| D. | all the above. |
| Answer» E. | |
| 95. |
The curvature of the earth's surface, is taken into account only if the extent of survey is more than |
| A. | 100 sq km |
| B. | 160 sq km |
| C. | 200 sq km |
| D. | 260 sq km. |
| Answer» E. | |
| 96. |
The minimum range for sliding the focusing lens in the internal focusing telescope for focusing at all distances beyond 4 m is |
| A. | 5 mm |
| B. | 10 mm |
| C. | 15 mm |
| D. | 20 mm. |
| Answer» E. | |
| 97. |
In chain surveying, perpendiculars to the chain line, are set out by |
| A. | a theodolite |
| B. | a prismatic compass |
| C. | a level |
| D. | an optical square |
| Answer» E. | |
| 98. |
The accuracy of measurement in chain surveying, does not depend upon |
| A. | length of the offset |
| B. | scale of the plotting |
| C. | importance of the features |
| D. | general layout of the chain lines. |
| Answer» E. | |
| 99. |
Diaphragm of a surveying telescope is held inside |
| A. | eye-piece |
| B. | objective |
| C. | telescope tube at its mid point |
| D. | telescope at the end nearer the eye-piece |
| Answer» E. | |
| 100. |
A traverse deflection angle is |
| A. | less than 90° |
| B. | more than 90° but less than 180° |
| C. | the difference between the included angle and 180° |
| D. | the difference between 360° and the included angle. |
| Answer» D. the difference between 360° and the included angle. | |