MCQOPTIONS
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MCQOPTIONS
This section includes 492 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every |
| A. | 100 sq. km of area |
| B. | 150 sq. km of area |
| C. | 200 sq. km of area |
| D. | none of these. |
| Answer» D. none of these. | |
| 452. |
If f1 and f2 are the distances from the optical centre of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good |
| A. | f = f1 + f2 |
| B. | f = (f1 + f2) |
| C. | |
| Answer» D. | |
| 453. |
In a precision traverse, included angles are measured by setting the vernier |
| A. | to read zero exactly on back station |
| B. | to read 5° exactly on back station |
| C. | some where near zero and reading both verniers on back station |
| D. | all the above. |
| Answer» D. all the above. | |
| 454. |
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 | |
| 455. |
The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's |
| A. | resolving power |
| B. | brightness |
| C. | field of view |
| D. | magnification. |
| Answer» E. | |
| 456. |
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. | |
| 457. |
Determining the difference in elevation between two points on the surface of the earth, is known as |
| A. | levelling |
| B. | simple levelling |
| C. | differential levelling |
| D. | longitudinal levelling. |
| Answer» D. longitudinal levelling. | |
| 458. |
If d is the distance between equidistant odd ordinates, the Simpson's rule for the areas, is |
| A. | [h1 + hn + 2(h3 + h5 + ... + hn - 2) + 4(h2 + h4 + ... + hn - 1)] |
| B. | [h1 + hn + 2(h3 + h5 + ... + hn - 2) + 4(h2 + h4 + ... + hn - 1)] |
| C. | [h1 + hn x 2(h2 + h4 + ... + hn - 1) + 4(h3 + h5 + ... + hn - 2)] |
| D. | [h1 + hn + 2(h3 + h5 + ... + hn - 2) + 4(h2 + h4 + ... + hn - 1)] |
| Answer» C. [h1 + hn x 2(h2 + h4 + ... + hn - 1) + 4(h3 + h5 + ... + hn - 2)] | |
| 459. |
The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is |
| A. | 102° |
| B. | 78° |
| C. | 45° |
| D. | none of these. |
| Answer» B. 78¬∞ | |
| 460. |
If α is the angle between the polar ray and the tangent at the point of commencement of a lemniscate curve, the equation of the curve, is |
| A. | l = ksin α |
| B. | l = ksin 2α |
| C. | l = ksin 3α |
| D. | l = ktan 2α |
| Answer» B. l = ksin 2Œ± | |
| 461. |
Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than |
| A. | 30 m |
| B. | 25 m |
| C. | 20 m |
| D. | 15 m |
| Answer» C. 20 m | |
| 462. |
The combined effect of curvature and refraction over a distance L kilometres is |
| A. | 67.2 L2 mm |
| B. | 76.3 L2 mm |
| C. | 64.5 L2 mm |
| D. | none of these. |
| Answer» B. 76.3 L2 mm | |
| 463. |
If the rate of gain of radial acceleration is 0.3 m per sec3 and full centrifugal ratio is developed. On the curve the ratio of the length of the transition curve of same radius on road and railway, is |
| A. | 2.828 |
| B. | 3.828 |
| C. | 1.828 |
| D. | 0.828. |
| Answer» B. 3.828 | |
| 464. |
The conventional sign shown in below figure represents a |
| A. | bridge carrying railway below road |
| B. | bridge carrying road below railway |
| C. | bridge carrying road and railway at the same level |
| D. | a level crossing. |
| Answer» C. bridge carrying road and railway at the same level | |
| 465. |
If R is the radius of the main curve, θ the angle of deflection, S the shift and L the length of the transition curve, then, total tangent length of the curve, is |
| A. | (R - S) tan θ/2 - L/2 |
| B. | (R + S) tan θ/2 - L/2 |
| C. | (R + S) tan θ/2 + L/2 |
| D. | (R - S) tan θ/2 + L/2 |
| Answer» D. (R - S) tan Œ∏/2 + L/2 | |
| 466. |
One of the tacheometric constants is additive, the other constant, is |
| A. | subtractive constant |
| B. | multiplying constant |
| C. | dividing constant |
| D. | indicative constant. |
| Answer» C. dividing constant | |
| 467. |
The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known |
| A. | balancing the sights |
| B. | balancing the departures |
| C. | balancing the latitudes |
| D. | balancing the traverse. |
| Answer» E. | |
| 468. |
Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is |
| A. | 10 cm |
| B. | 20 cm |
| C. | 30 cm |
| D. | 40 cm |
| Answer» D. 40 cm | |
| 469. |
If deflection angles are measured in a closed traverse, the difference between the sum of the right-hand and that of the left hand angles should be equal to |
| A. | 0° |
| B. | 90° |
| C. | 180° |
| D. | 360° |
| Answer» E. | |
| 470. |
While measuring the distance between two points along upgrade with the help of a 20 m chain, the forward end of the chain is shifted forward through a distance |
| A. | 20 (sin θ - 1) |
| B. | 20 (cos θ - 1) |
| C. | 20 (sec θ - 1) |
| D. | 20 (cosec θ - 1). |
| Answer» D. 20 (cosec Œ∏ - 1). | |
| 471. |
Bergchrund is a topograhical feature in |
| A. | plains |
| B. | water bodies |
| C. | hills |
| D. | glaciated region |
| Answer» C. hills | |
| 472. |
The slope correction for a 3° slope for a length of 100 m, is |
| A. | -0.11 m |
| B. | -0.12 m |
| C. | -1.87 m |
| D. | -0.137 m |
| Answer» E. | |
| 473. |
A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic |
| A. | spherical aberration |
| B. | chromatic aberration |
| C. | coma |
| D. | astigmatism. |
| Answer» B. chromatic aberration | |
| 474. |
Number of links per metre length of a chain are |
| A. | 2 |
| B. | 5 |
| C. | 8 |
| D. | 10 |
| Answer» C. 8 | |
| 475. |
While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is |
| A. | correctly focussed |
| B. | not correctly focussed |
| C. | said to have parallax |
| D. | free from parallax. |
| Answer» D. free from parallax. | |
| 476. |
If + 0.8% grade meets - 0.7% grade and the rate of change of grade for 30 m distance is 0.05, the length of the vertical curve will be |
| A. | 600 m |
| B. | 700 m |
| C. | 800 m |
| D. | 900 m |
| Answer» E. | |
| 477. |
In chain surveying tie lines are primarily provided |
| A. | to check the accuracy of the survey |
| B. | to take offsets for detail survey |
| C. | to avoid long offsets from chain lines |
| D. | to increase the number of chain lines. |
| Answer» D. to increase the number of chain lines. | |
| 478. |
The branch of surveying in which both horizontal and vertical positions of a point, are determined by making instrumental observations, is known |
| A. | tacheometry |
| B. | tachemetry |
| C. | telemetry |
| D. | all the above. |
| Answer» E. | |
| 479. |
In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and the straight, and the angle between the polar ray and the straight, is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» E. | |
| 480. |
If a linear traverse follows a sharp curve round a large lake where it is difficult to have long legs, the accuracy of the traverse may be improved by |
| A. | taking short legs |
| B. | making repeated observations of angular and linear measurements |
| C. | making a subsidiary traverse to determine the length of a long leg |
| D. | all the above. |
| Answer» D. all the above. | |
| 481. |
ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is |
| A. | 90° |
| B. | 120° |
| C. | 210° |
| D. | 270° |
| Answer» D. 270¬∞ | |
| 482. |
Number of subdivisions per metre length of a levelling staff is |
| A. | 100 |
| B. | 200 |
| C. | 500 |
| D. | 1000 |
| Answer» C. 500 | |
| 483. |
If Δ is the angle of deflection of a simple curve of radius R, the length of its long chord, is |
| A. | R cos |
| B. | 2R cos |
| C. | R sin |
| D. | 2R sin . |
| Answer» E. | |
| 484. |
Surveys which are carried out to depict mountains, rivers, water bodies, wooded areas and other cultural details, are known as |
| A. | cadastral surveys |
| B. | city surveys |
| C. | topographical surveys |
| D. | guide map surveys |
| Answer» D. guide map surveys | |
| 485. |
Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of offset should be limited to |
| A. | 14.14 |
| B. | 28.28 m |
| C. | 200 m |
| D. | none of these. |
| Answer» C. 200 m | |
| 486. |
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. | |
| 487. |
If h is the difference in level between end points separated by l, then the slope correction is . The second term may be neglected if the value of h in a 20 m distance is less than |
| A. | m |
| B. | 1 m |
| C. | 2 m |
| D. | 3 m |
| Answer» E. | |
| 488. |
The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known |
| A. | a simple curve |
| B. | a compound curve |
| C. | a reverse curve |
| D. | a vertical curve. |
| Answer» D. a vertical curve. | |
| 489. |
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. | |
| 490. |
One of the Lehmann's rules of plane tabling, is |
| A. | location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances |
| B. | when looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray |
| C. | when the instrument station is outside the circumscribing circle its location is always on the opposite side of the ray to the most distant point as the inter-section of the other two rays |
| D. | none of these. |
| Answer» B. when looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray | |
| 491. |
Accuracy of 'fix' by two point problem, is |
| A. | bad |
| B. | good |
| C. | not reliable |
| D. | unique. |
| Answer» D. unique. | |
| 492. |
The reduced bearing of a line is N 87° W. Its whole circle bearing is |
| A. | 87° |
| B. | 273° |
| C. | 93° |
| D. | 3° |
| Answer» C. 93¬∞ | |