Explore topic-wise MCQs in Civil Engineering.

This section includes 166 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

If is gauge distance and a is crossing, the distance between the nose of acute crossing and nose of obtuse crossing of a rail diamond, measured along the rail not forming the diamond, is

A. cot α
B. tan α
C. sin α
D. cos α
Answer» B. tan α
Discussion
2.

If is the distance between the parallel sidings and α is the angle of crossing, the distance between the noses of crossing measured parallel to the main track, is

A. D tan α
B. D sec α
C. D cosec α
D. D cot α
Answer» D. D cot α
Discussion
3.

If is the distance between the parallel sidings and β is the limiting angle of crossings, the distance between the noses of crossing measured parallel to the main track, is

A. sin β
B. cot β
C. tan β
D. sec β
Answer» C. tan β
Discussion
4.

If is the distance between the parallel sidings and α is the angle of crossing, the distance between the noses of crossing measured parallel to the gathering line, is

A. D tan α
B. D cot α
C. D sin α
D. D cos α
Answer» C. D sin α
Discussion
5.

If α is switch angle and is radius of the turnout, the length of the tongue rail, is

A. sin α
B. tan α
C. R sin α/2
D. R tan α/2
E. R cos α/2
Answer» E. R cos α/2
Discussion
6.

On a straight railway track, absolute levels at point on two rails are 100.550 m and 100.530 m and the absolute levels at point B 100 m apart are 100.585 m and 100.515 m respectively, the value of twist of rails per metre run, is

A. 0.4 mm
B. 0.5 mm
C. 0.7 mm
D. 0.8 mm
E. 1.0 mm
Answer» C. 0.7 mm
Discussion
7.

Safe speed () on a curve of radius 970 metres provided with two transition curves on Board Gauge track, is

A. 112 km/hour
B. 122 km/hour
C. 132 km/hour
D. 142 km/hour
Answer» D. 142 km/hour
Discussion
8.

If absolute levels of rails at the consecutive axles , , and separated by 1.8 metres are 100.505 m, 100.530 m, and 100.525 m respectively, the unevenness of rails, is

A. 0.065 m
B. 0.055 m
C. 0.045 m
D. 0.035 m
Answer» B. 0.055 m
Discussion
9.

If S is the switch angle and α is diamond angle, r is the radius of slip, the distance between middle point slip and the nose of obtuse crossing, is

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
10.

If D is the distance between the parallel sidings and β is the limiting angle of crossings, the distance between the noses of crossing measured parallel to the main track, is

A. D sin β
B. D cot β
C. D tan β
D. D sec β
Answer» C. D tan β
Discussion
11.

If D is the distance between the parallel sidings and α is the angle of crossing, the distance between the noses of crossing measured parallel to the main track, is

A. D tan α
B. D sec α
C. D cosec α
D. D cot α
Answer» D. D cot α
Discussion
12.

If D is the distance between parallel tracks G is the gauge and α is angle of crossings, the distance between theoretical noses of two crossings measured parallel to tracks, is

A. (D - G - G sec α) cot α
B. (D - G + G sec α) cot α
C. (D - G - G sec α) tan α
D. (D + G + G sec α) cot α
Answer» B. (D - G + G sec α) cot α
Discussion
13.

If D is the distance between the parallel sidings and α is the angle of crossing, the distance between the noses of crossing measured parallel to the gathering line, is

A. D tan α
B. D cot α
C. D sin α
D. D cos α
Answer» C. D sin α
Discussion
14.

The distance between the theoretical noses of crossing along the same rail, in case of diamond crossing, is

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
15.

If α is switch angle and R is radius of the turnout, the length of the tongue rail, is

A. R sin α
B. R tan α
C. R sin α/2
D. R tan α/2
E. R cos α/2
Answer» E. R cos α/2
Discussion
16.

If L1 and L2 are actual and theoretical lengths of a tongue rail, d is heel divergence and t is thickness of tongue rail at toe, the switch angle α is

A. [A].
B. [B].
C. [C].
D. [D].
E. [E].
Answer» B. [B].
Discussion
17.

If S is cant deficiency in centimetres and V is maximum permissible speed in km p.h,, the maximum length of transition curves, is

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
18.

If G is gauge is metres, V is speed of trains in km/hour and R is radius of a curve in metres, the equilibrium superelevation is

A. [A].
B. [B].
C. [C].
D. [D].
E. [E].
Answer» D. [D].
Discussion
19.

If w is width of sleepers, s is sleeper spacing and d is depth of ballast then

A. [A].
B. [B].
C. [C].
D. [D].
E. [E].
Answer» B. [B].
Discussion
20.

If S and H are strength and hardness index of a timber at 12% moisture content, the composite sleeper index, is

A. [A].
B. [B].
C. [C].
D. [D].
Answer» C. [C].
Discussion
21.

Regional Indian railways use different types of sleepers according to their

A. availability
B. economy
C. suitability
D. design
E. all the above.
Answer» F.
Discussion
22.

The factor for deciding the type of sleeper, is

A. easy fixing and removal of rails
B. provision of sufficient bearing area for rails
C. initial and maintenance costs
D. strength to act as a beam under loads
E. all the above.
Answer» F.
Discussion
23.

On Indian Railways, the approximate weight of a rail section is determined from the formula

A. [A].
B. [B].
C. [C].
D. [D].
Answer» D. [D].
Discussion
24.

If L is length of a rail and R is the radius of a curve, the versine h for the curve, is

A. [A].
B. [B].
C. [C].
D. [D].
E. [E].
Answer» D. [D].
Discussion
25.

Weight and cross section of the rails are decided on

A. gauge of tracks
B. speed of trains
C. spacing of sleepers
D. type of rails
E. all the above.
Answer» F.
Discussion
26.

For an effective administration, Indian railway system has been divided into

A. four railway zones
B. six railway zones
C. seven railway zones
D. eight railway zones
E. nine railway zones.
Answer» F.
Discussion
27.

Check rails are provided on inner side of inner rails if sharpness of a B.G. curve, is more than

A. none of these.
B. 3°
C. 5°
D. 6°
Answer» E.
Discussion
28.

A wing rail is renewed or reconditioned if its maximum vertical wear is

A. 9.5 m
B. 7.5 m
C. 5.5 m
D. 5.0 m
Answer» B. 7.5 m
Discussion
29.

Steel sleepers are

A. rectangular is cross section throughout
B. hollow circular pipes
C. 6 mm thick steel sheets with ends bent down
D. 6 mm thick steel sheets with ends bent up.
Answer» D. 6 mm thick steel sheets with ends bent up.
Discussion
30.

Maximum wheel base distance provided on Indian B.G. tracks, is

A. square rail joint.
B. 4.096 m
C. 5.096 m
D. 6.096 m
Answer» D. 6.096 m
Discussion
31.

Distance between inner faces of the flanges, is kept

A. equal to the gauge distance
B. slightly less than the gauge distance
C. slightly more than the gauge distance
D. none of these.
Answer» C. slightly more than the gauge distance
Discussion
32.

The difference in the lengths of two diagonals of a rail diamond is

A. undercut
B. over riding
C. straight cut.
Answer» B. over riding
Discussion
33.

The angle between the gauge faces of the stock rail and tongue rail, is called

A. 2.35 m
B. 2.53 m
C. none of these.
D. switch angle
Answer» B. 2.53 m
Discussion
34.

On Indian Railways standard length of rails for M.G. track, is

A. distance between centres of rails
B. width of formation
C. none of these.
D. 33 ft (10.06 m)
Answer» D. 33 ft (10.06 m)
Discussion
35.

For points and crossings, maximum size of ballast, is

A. 0.50 m2
B. 50 mm
C. 40 mm
D. 30 mm
Answer» E.
Discussion
36.

The rails get out of their original positions due to insufficient expansion gap. This phenomenon is known

A. 550 m
B. hogging
C. buckling
D. creeping
Answer» C. buckling
Discussion
37.

Distance between the inner rail and check rail provided on sharp curve, is

A. 40 mm
B. 42 mm
C. 44 mm
D. 46 mm
Answer» D. 46 mm
Discussion
38.

If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

A. DN + G (4N + l +N2)
B. 10 chains
C. 12 chains
D. 14 chains
Answer» D. 14 chains
Discussion
39.

Rail tops of a track are placed

A. all the above.
B. horizontal
C. at an inward slope of 1 in 20
D. at an outward slope of 1 in 20
Answer» C. at an inward slope of 1 in 20
Discussion
40.

A welded rail joint is generally

A. bull headed rails to the wooden sleepers
B. flat footed rails to the cast iron sleepers
C. none of these.
D. supported on a sleeper
Answer» D. supported on a sleeper
Discussion
41.

In India, metre gauge permanent way was adopted in

A. 1855
B. 1860
C. 1866
D. 1871
Answer» E.
Discussion
42.

Heel of crossing is the line joining

A. 42 ft (12.8 m)
B. ends of splice rail and point rail
C. ends of lead rails butting the crossing
D. ends of wing rails
Answer» B. ends of splice rail and point rail
Discussion
43.

The standard width of ballast for B.G.track in Indian Railways, is kept

A.
B.
Answer» B.
Discussion
44.

Coning of wheels is provided

A. to check lateral movement of wheels
B. to avoid damage to inner faces of rails
C. to avoid discomfort to passengers
D. All the above.
Answer» E.
Discussion
45.

The sleepers which satisfy the requirements of an ideal sleeper, are

A. all the above.
B. cast iron sleepers
C. R.C.C. sleepers
D. steel sleepers
Answer» E.
Discussion
46.

A scissors cross-over consists of

A. two pairs of points, four acute angle crossings and two obtuse angle crossings
B. four pairs of points, four acute angle crossings and four obtuse angle crossings
C. four pairs of points, six acute angle crossings and two obtuse angle crossings
D. two pairs of points, six acute angle crossings and four obtuse angle crossings.
Answer» D. two pairs of points, six acute angle crossings and four obtuse angle crossings.
Discussion
47.

Indian Railways detects the rail flow by

A. Mitsubish Rail flow dector
B. Soni Rail flow dector
C. Audi-gauge Rail flow detector
D. Kraut Kramer Rail flow detector.
Answer» E.
Discussion
48.

If D is the distance between the parallel sidings and β is the limiting angle of crossings, the distance between the noses of crossing measured parallel to the main track, is

A. All the above.
B. D sin β
C. D cot β
D. D tan β
Answer» C. D cot Œ≤
Discussion
49.

Type of switch rails generally adopted for modern track, is

A. 135 mm
B. straight switch
C. curved switch
D. loose heel switch
Answer» C. curved switch
Discussion
50.

Burnettising is done for the preservation of

A. wooden sleepers
B. rails
C. ballast
D. none of these.
Answer» B. rails
Discussion