Explore topic-wise MCQs in Civil Engineering.

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.

301.

A telescope is said to be inverted if its

A. vertical circle is to its right and the bubble of the telescope is down
B. vertical circle is to its right and the bubble of the telescope is up
C. vertical circle is to its left and the bubble of the telescope is down
D. vertical circle is to its left and the bubble of the telescope is up
Answer» B. vertical circle is to its right and the bubble of the telescope is up
Discussion
302.

The permissible error in chaining for measurement with chain on rough or hilly ground is

A. 1 in 100
B. 1 in 250
C. 1 in 500
D. 1 in 1000
Answer» C. 1 in 500
Discussion
303.

Triangulation surveys are carried out for providing

A. Planimetric control
B. Height control
C. Both planimetric and height control
D. None of these
Answer» D. None of these
Discussion
304.

On vertical photographs, height displacement is

A. Positive for points above datum
B. Negative for points below datum
C. Zero for points vertically below the air station
D. All the above
Answer» E.
Discussion
305.

Theodolite is an instrument used for

A. tightening the capstan-headed nuts of level tube
B. measurement of horizontal angles only
C. measurement of vertical angles only
D. measurement of both horizontal and vertical angles
Answer» E.
Discussion
306.

If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to

A. d
B. 1/d
C. d2
D. 1/d2
Answer» D. 1/d2
Discussion
307.

The longitudes of two places at latitude 60° N are 93° E and 97° W. Their departure is$

A. 5100 nautical miles
B. 5700 nautical miles
C. 120 nautical miles
D. 500 nautical miles
Answer» C. 120 nautical miles
Discussion
308.

Longitudes are measured from 0° to$

A. 180° eastward
B. 180° westward
C. 180° east or westward
D. 360° eastward
Answer» D. 360¬¨‚àû eastward
Discussion
309.

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
Discussion
310.

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 ≈í¬±
Discussion
311.

The principal line is the line joining the principal point and

A. Nadir
B. Isocenter
C. Perspective centre
D. None of these
Answer» C. Perspective centre
Discussion
312.

If α, H, A and δ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude λ, the following relation holds good$

A. cos H = tan λ/tan δ
B. sin α = sin λ/sin δ
C. sin A = cos δ/cos λ
D. All the above
Answer» E.
Discussion
313.

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 ≈í¬±
Discussion
314.

If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is#

A. 30°
B. 35°
C. 30°
D. 45°
Answer» D. 45¬¨‚àû
Discussion
315.

Three point problem can be solved by

A. Tracing paper method
B. Bessels method
C. Lehman’s method
D. all of the above
Answer» E.
Discussion
316.

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
Discussion
317.

Agate cap is fitted with a

A. cross staff
B. level
C. chain
D. prismatic compass
Answer» E.
Discussion
318.

The scale of the photography taken from a height of 300 m, with a camera of focal length 15 cm, is

A. 1 : 10,000
B. 1 : 15,000
C. 1 : 20,000
D. 1 : 30,000
Answer» D. 1 : 30,000
Discussion
319.

A ’level line’ is a#

A. horizontal line
B. line parallel to the mean spheriodal surface of earth
C. line passing through the center of cross hairs and the center of eye piece
D. line passing through the objective lens and the eye-piece of a dumpy or tilting level
Answer» C. line passing through the center of cross hairs and the center of eye piece
Discussion
320.

23 cm √ó 23 cm photographs are taken from a flying height with a camera of focal length of 3600 m and 15.23 cm respectively. A parallax difference of 0.01 mm represents#

A. 1 m
B. 2 m
C. 4 m
D. 8 m
Answer» B. 2 m
Discussion
321.

If the length of a chain is found to be short on testing, it can be adjusted by

A. straightening the links
B. removing one or more small circular rings
C. closing the joints of the rings if opened out
D. all of the above
Answer» B. removing one or more small circular rings
Discussion
322.

For a line AB

A. the forebearing of AB and back bearing of AB differ by 180°
B. the forebearing of AB and back bearing of BA differ by 180°
C. both (A) and (B) are correct
D. none is correct
Answer» B. the forebearing of AB and back bearing of BA differ by 180¬¨‚àû
Discussion
323.

The cross hairs in the surveying telescope are placed

A. midway between eye piece and objec-tive lens
B. much closer to the eye-piece than to the objective lens
C. much closer to the objective lens than to the eye piece
D. anywhere between eye-piece and objective lens
Answer» C. much closer to the objective lens than to the eye piece
Discussion
324.

The graduations in prismatic compassi) are invertedii) are uprightiii) run clockwise having 0° at southiv) run clockwise having 0° at northThe correct answer is#

A. (i) and (iii)
B. (i) and (iv)
C. (ii) and (iii)
D. (ii) and (iv)
Answer» B. (i) and (iv)
Discussion
325.

Which of the following errors cannot be eliminated by taking both face observations ?

A. error due to horizontal axis not being perpendicular to the vertical axis
B. index error i.e. error due to imperfect adjustment of the vertical circle vernier
C. error due to non-parallelism of the axis of telescope level and line of collimation
D. none of the above
Answer» E.
Discussion
326.

The rise and fall method

A. is less accurate than height of instrument method
B. is not suitable for levelling with tilting levels
C. provides a check on the reduction of intermediate point levels
D. quicker and less tedious for large number of intermediate sights
Answer» D. quicker and less tedious for large number of intermediate sights
Discussion
327.

Which of the following is not used in measuring perpendicular offsets ?

A. line ranger
B. steel tape
C. optical square
D. cross staff
Answer» B. steel tape
Discussion
328.

Height of instrument method of levelling is

A. more accurate than rise and fall method
B. less accurate than rise and fall method
C. quicker and less tedious for large number of intermediate sights
D. none of the above
Answer» D. none of the above
Discussion
329.

The rise and fall method of levelling provides a complete check on

A. backsight
B. intermediate sight
C. foresight
D. all of the above
Answer» E.
Discussion
330.

A plate parallel is the line on the plane of the negative

A. Parallel to the principal line
B. Perpendicular to the principal line
C. Along the bisector of the angle between the principal line and a perpendicular line through principal plane
D. None of these
Answer» C. Along the bisector of the angle between the principal line and a perpendicular line through principal plane
Discussion
331.

Which of the following statements is incorrect ?

A. Error due to refraction may not be completely eliminated by reciprocal levelling.
B. Tilting levels are commonly used for precision work.
C. The last reading of levelling is always a foresight.
D. All of the above statements are incorrect.
Answer» E.
Discussion