GATE CE Transportation Infrastructure PYQs & Answers — Page 4

Questions 31–40 of 50. Imported answers require independent review unless marked reviewed.

For a 2° curve on a high speed Broad Gauge (BG) rail section, the maximum sanctioned speed is 100 km/h and the equilibrium speed is 80 km/h. Consider dynamic gauge of BG rail as 1750 mm. The degree of curve is defined as the angle subtended at its center by a 30.5 m arc. The cant deficiency for the curve (in mm, round off to integer) is ________.

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In an urban area, a median is provided to separate the opposing streams of traffic. As per IRC:86-1983, the desirable minimum width (in m, expressed as integer) of the median, is ________.

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A road in a hilly terrain is to be laid at a gradient of 4.5%. A horizontal curve of radius 100 m is laid at a location on this road. Gradient needs to be eased due to combination of curved horizontal and vertical profiles of the road. As per IRC, the compensated gradient (in %, round off to one decimal place), is ________.

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The appropriate design length of a clearway is calculated on the basis of ‘Normal Take-off condition’. Which one of the following options correctly depicts the length of the clearway? (Note: None of the options are drawn to scale.)

Your answerChoose one option.

Diagram for Civil Engineering question 33

Diagram for Civil Engineering question 33 (figure 2)

Diagram for Civil Engineering question 33 (figure 3)

Diagram for Civil Engineering question 33 (figure 4)

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For the hottest month of the year at the proposed airport site, the monthly mean of the average daily temperature is 39°C. The monthly mean of the maximum daily temperature is 48°C for the same month of the year. From the given information, the calculated Airport Reference Temperature (in °C), is

Your answerChoose one option.

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The design speed of a two-lane two-way road is 60 km/h and the longitudinal coefficient of friction is 0.36. The reaction time of a driver is 2.5 seconds. Consider acceleration due to gravity as 9.8 m/s². The intermediate sight distance (in m, round off to the nearest integer) required for the road is _____.

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The coefficient of average rolling friction of a road is

and its grade is +G%. If the grade of this road is doubled, what will be the percentage change in the braking distance (for the design vehicle to come to a stop) measured along the horizontal (assume all other parameters are kept unchanged)?

Your answerChoose one option.

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A vehicle is moving on a road of grade +4% at a speed of 20

. Consider the coefficient of rolling friction as 0.46 and acceleration due to gravity as 10

. On applying brakes to reach a speed of 10

, the required braking distance (in

, round off to nearest integer) along the horizontal, is ______

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A broad gauge railway line passes through a horizontal curved section (radius = 875

) of length 200

. The allowable speed on this portion is 100

. For calculating the cant, consider the gauge as centre-to-centre distance between the rail heads, equal to 1750

. The maximum permissible cant (in

, round off to 1 decimal place) with respect to the centre-to-centre distance between the rail heads is __________

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A parabolic vertical curve is being designed to join a road of grade +5% with a road of grade −3%. The length of the vertical curve is 400 m measured along the horizontal. The vertical point of curvature (VPC) is located on the road of grade +5%. The difference in height between VPC and vertical point of intersection (VPI) (in m, round off to the nearest integer) is ________.

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GATE CE Transportation Infrastructure PYQs

Question 55

Question 20

Question 21

Question 33

Question 33

Question 45

Question 11

Question 23

Question 45

Question 47