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.
| 401. |
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. | |
| 402. |
Horizontal distances obtained tacheometerically are corrected for |
| A. | slope correction |
| B. | temperature correction |
| C. | refraction and curvature correction |
| D. | all the above. |
| Answer» D. all the above. | |
| 403. |
The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to |
| A. | shimmering |
| B. | horizontal refraction |
| C. | vertical refraction |
| D. | both shimmering and horizontal refraction. |
| Answer» E. | |
| 404. |
A dumpy level was set up at mid-point between pegs A and B, 80 m apart and the staff readings were 1.32 and 1.56. When the level was set up at a point 10 m from A on BA produced, the staff readings obtained at A and B were 1.11 and 1.39. The correct staff reading from this set up at S should be |
| A. | 1.435 |
| B. | 1.345 |
| C. | 1.425 |
| D. | none of these. |
| Answer» C. 1.425 | |
| 405. |
The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is |
| A. | 21° 45' |
| B. | 42° 15' |
| C. | 42° 15' W |
| D. | 21° 45' W |
| Answer» B. 42¬∞ 15' | |
| 406. |
The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known |
| A. | declination |
| B. | azimuth |
| C. | dip |
| D. | bearing. |
| Answer» D. bearing. | |
| 407. |
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 | |
| 408. |
Grid lines are parallel to |
| A. | magnetic meridian of the central point of the grid |
| B. | line representing the central true meridian of the grid |
| C. | geographical equator |
| D. | none of these. |
| Answer» C. geographical equator | |
| 409. |
An angles of 45° with a chain line may be set out with |
| A. | optical square |
| B. | open cross staff |
| C. | Fench cross staff |
| D. | prismatic square. |
| Answer» D. prismatic square. | |
| 410. |
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. | |
| 411. |
While measuring with a metallic tape of 30 m length pull should be applied |
| A. | 1 kg |
| B. | 2 kg |
| C. | 3 kg |
| D. | 4 kg |
| Answer» D. 4 kg | |
| 412. |
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. | |
| 413. |
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 | |
| 414. |
Angles to a given pivot station observed from a number of traverse stations when plotted, the lines to the pivot station intersect at a common point |
| A. | angular measurements are correct and not the linear measurements |
| B. | linear measurements are correct and not the angular measurements |
| C. | angular and linear measurements are correct and not the plotting of traverse |
| D. | angular and linear measurements and also plotting of the traverse are correct. |
| Answer» E. | |
| 415. |
The included angles of a theodolite traverse, are generally measured |
| A. | clockwise from the forward station |
| B. | anti-clockwise from the back station |
| C. | anti-clockwise from the forward station |
| D. | clockwise from the back station. |
| Answer» E. | |
| 416. |
The area of a plane triangle ABC, having its base AC and perpendicular height h, is |
| A. | bh |
| B. | ba sin C |
| C. | bc sin A |
| D. | S(S - a)(S - b)(S - c) where S is |
| Answer» E. | |
| 417. |
The difference in the lengths of an arc and its subtended chord on the earth surface for a distance of 18.2 km, is only |
| A. | 1 cm |
| B. | 5 cm |
| C. | 10 cm |
| D. | 100 cm. |
| Answer» D. 100 cm. | |
| 418. |
The ratio of the linear displacement at the end of a line, subtended by an arc of one second to the length of the line, is |
| A. | 1:206 300 |
| B. | 2.430555556 |
| C. | 0.08125 |
| D. | 0.111111111 |
| Answer» B. 2.430555556 | |
| 419. |
The bearing of AB is 190° and that of CB is 260° 30'. The included angle ABC, is |
| A. | 80° 30' |
| B. | 99° 30' |
| C. | 70° 30' |
| D. | none of these |
| Answer» D. none of these | |
| 420. |
The true meridian of a place is the line in which earth's surface is intersected by a plane through |
| A. | east and west points |
| B. | zenith and nadir points |
| C. | north and south geographical poles |
| D. | north and south magnetic poles. |
| Answer» D. north and south magnetic poles. | |
| 421. |
The distances AC and BC are measured from two fixed points A and B whose distance AB is known. The point C is plotted by intersection. This method is generally adopted in |
| A. | chain surveying |
| B. | traverse method of surveys |
| C. | triangulation |
| D. | none of these. |
| Answer» B. traverse method of surveys | |
| 422. |
Which one of the following mistakes/errors may be cumulative + or - : |
| A. | bad ranging |
| B. | bad straightening |
| C. | erroneous length of chain |
| D. | sag. |
| Answer» D. sag. | |
| 423. |
A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at A and B were 1.22 and 1.06. With the level set up a A, the readings at A and B were 1.55 and 1.37. The collimation error per 100 m length of sight is |
| A. | 0.02 m inclined upwards |
| B. | 0.04 m inclined downwards |
| C. | 0.04 m inclined upward |
| D. | none of these. |
| Answer» C. 0.04 m inclined upward | |
| 424. |
If whole circle bearing of a line is 120°, its reduced bearing is |
| A. | S 20° E |
| B. | S 60° E |
| C. | N 120° E |
| D. | N 60° E. |
| Answer» C. N 120¬∞ E | |
| 425. |
The imaginary line passing through the intersection of cross hairs and the optical centre of the objective, is known as |
| A. | line of sight |
| B. | line of collimation |
| C. | axis of the telescope |
| D. | none of these. |
| Answer» C. axis of the telescope | |
| 426. |
If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, prismoidal correction for a level section is |
| A. | D/2m(h1 - h2) |
| B. | D/3m(h1 - h2) |
| C. | D/6m(h1 - h2)2 |
| D. | D/6m(h1 - h2)3 |
| Answer» D. D/6m(h1 - h2)3 | |
| 427. |
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. | 25 m |
| Answer» E. | |
| 428. |
The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corresponding lines on the ground, is known |
| A. | levelling |
| B. | centering |
| C. | orientation |
| D. | setting. |
| Answer» D. setting. | |
| 429. |
If L is in kilometres, the curvature correction is |
| A. | 58.2 L2 mm |
| B. | 64.8 L2 mm |
| C. | 74.8 L2 mm |
| D. | 78.4 L2 mm. |
| Answer» E. | |
| 430. |
The tangent to the liquid surface in a level tube, is parallel to the axis of the level tube at |
| A. | every point of the bubble |
| B. | either end of the bubble |
| C. | the mid-point of the bubble |
| D. | no where. |
| Answer» D. no where. | |
| 431. |
It θ is the probable error of an observed bearing of a line of length l, the error over the whole length of the traverse of n lines of length l is |
| A. | l n |
| B. | n |
| C. | θ |
| D. | θ n |
| Answer» B. n | |
| 432. |
For setting out a simple curve, using two theodolites. |
| A. | offsets from tangents are required |
| B. | offsets from chord produced are required |
| C. | offsets from long chord are required |
| D. | deflection angles from Rankine's formula are required |
| Answer» E. | |
| 433. |
True meridians are generally preferred to magnetic meridians because |
| A. | these converge to a point |
| B. | these change due to change in time |
| C. | these remain constant. |
| D. | None of these. |
| Answer» D. None of these. | |
| 434. |
An imaginary line lying throughout on the surface of the earth and preserving a constant inclination to the horizontal, is called |
| A. | contour line |
| B. | contour gradient |
| C. | level line |
| D. | line of gentle scope. |
| Answer» C. level line | |
| 435. |
The 'fix' of a plane table station with three known points, is bad if the plane table station lies |
| A. | in the great triangle |
| B. | outside the great triangle |
| C. | on the circumference of the circumscribing circle |
| D. | none of these. |
| Answer» D. none of these. | |
| 436. |
Which one of the following procedures for getting accurate orientation is the most distinctive feature of the art of plane tabling |
| A. | radiation |
| B. | intersection |
| C. | traversing |
| D. | resection. |
| Answer» E. | |
| 437. |
For true difference in elevations between two points A and B, the level must be set up |
| A. | at any point between A and B |
| B. | at the exact mid point of A and B |
| C. | near the point A |
| D. | near the point B. |
| Answer» C. near the point A | |
| 438. |
Staff readings on pegs x and y from X station are 1.755 m and 2.850 m, and from station Y on staff head at Y and X are 0.655 m and 1.560 m. If reduced level of X is 105.5 m, the reduced level of Y is |
| A. | 104.0 m |
| B. | 104.5 m |
| C. | 105.0 m |
| D. | 105.5 m |
| Answer» C. 105.0 m | |
| 439. |
If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by |
| A. | Bowditch's rule |
| B. | Transit rule |
| C. | Empirical rule |
| D. | all of the above. |
| Answer» C. Empirical rule | |
| 440. |
To orient a plane table at a point P roughly south of the mid-point of two inaccessible conical hill stations A and B in the plains, a point C is selected in line with AB and table is oriented at C by bringing ab in line with AB. A ray is then drawn towards P and at P the table is oriented by back ray method. The orientation so obtained, is |
| A. | unique and correct |
| B. | incorrect |
| C. | manifold and correct |
| D. | not reliable. |
| Answer» D. not reliable. | |
| 441. |
With usual notations, the expression represents |
| A. | centrifugal force |
| B. | centrifugal ratio |
| C. | super elevation |
| D. | radial acceleration. |
| Answer» C. super elevation | |
| 442. |
Pantagraph is used for |
| A. | measuring distances |
| B. | measuring areas |
| C. | enlarging or reducing plans |
| D. | setting out right angles |
| Answer» D. setting out right angles | |
| 443. |
The real image of an object formed by the objective, must lie |
| A. | in the plane of cross hairs |
| B. | at the centre of the telescope |
| C. | at the optical centre of the eye-piece |
| D. | anywhere inside the telescope. |
| Answer» B. at the centre of the telescope | |
| 444. |
Closed contours of decreasing values towards their centre, represent |
| A. | a hill |
| B. | a depression |
| C. | a saddle or pass |
| D. | a river bed. |
| Answer» C. a saddle or pass | |
| 445. |
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 | |
| 446. |
If θ is the slope of the ground and l is the measured distance, the correction is |
| A. | 2l sin2 θ/2 |
| B. | 2l cos2 θ/2 |
| C. | 2l tan2 θ/2 |
| D. | 2l cot2 θ/2. |
| Answer» B. 2l cos2 Œ∏/2 | |
| 447. |
If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to |
| A. | 573 S/R |
| B. | 573 R/S |
| C. | 171.9 S/R |
| D. | 1718.9 R/S |
| Answer» E. | |
| 448. |
Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following |
| A. | chain surveying |
| B. | compass surveying |
| C. | plan table surveying |
| D. | tacheometric surveying. |
| Answer» D. tacheometric surveying. | |
| 449. |
The probable error of the adjusted bearing at the middle is |
| A. | rn |
| B. | rn |
| C. | rn |
| D. | rn. |
| Answer» B. rn | |
| 450. |
is the conventional sign of |
| A. | temple |
| B. | mosque |
| C. | idgah |
| D. | church |
| Answer» B. mosque | |