GATE CE concept:speed PYQs & Answers — Page 2

Questions 11–20 of 41. Imported answers require independent review unless marked reviewed.

A horizontal curve of radius 1080 m (with transition curves on either side) in a Broad Gauge railway track is designed and constructed for an equilibrium speed of 70 kmph. However, a few years after construction, the Railway Authorities decided to run express trains on this track. The maximum allowable cant deficiency is 10 cm.

The maximum restricted speed (in kmph) of the express trains running on this track is ______________ (rounded off to the nearest integer).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The figure presents the trajectories of six vehicles within a time-space domain. The number in the parentheses represents unique identification of each vehicle.

Diagram for Civil Engineering question 63

The mean speed (in km/hr) of the vehicles in the entire time-space domain is ______________ (rounded off to the nearest integer).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A vertical summit curve on a freight corridor is formed at the intersection of two gradients, +3.0% and −5.0%.

Assume the following: Only large-sized trucks are allowed on this corridor Design speed = 80 kmph Eye height of truck drivers above the road surface = 2.30 m Height of object above the road surface for which trucks need to stop = 0.35 m Total reaction time of the truck drivers = 2.0 s Coefficient of longitudinal friction of the road = 0.36 Stopping sight distance gets compensated on the gradient

The design length of the summit curve (in meters) to accommodate the stopping sight distance is __________ (rounded off to 2 decimal places).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A plot of speed-density relationship (linear) of two roads (Road A and Road B) is shown in the figure.

Diagram for Civil Engineering question 46

If the capacity of Road A is C_A and the capacity of Road B is C_B, what is

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The figure presents the time-space diagram for when the traffic on a highway is suddenly stopped for a certain time and then released. Which of the following statements are true?

Diagram for Civil Engineering question 50

Your answerSelect all correct options. You can choose more than one.

Speed is higher in Region R than in Region P

Volume is lower in Region Q than in Region P

Volume is higher in Region R than in Region P

Density is higher in Region Q than in Region R

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A horizontal curve is to be designed in a region with limited space. Which of the following measure(s) can be used to decrease the radius of curvature?

Your answerSelect all correct options. You can choose more than one.

Decrease the design speed.

Increase the superelevation.

Increase the design speed.

Restrict vehicles with higher weight from using the facility.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For a traffic stream,

is the space mean speed,

is the density,

is the flow,

is the free flow speed, and

is the jam density. Assume that the speed decreases linearly with density.

Which of the following relation(s) is/are correct?

Your answerSelect all correct options. You can choose more than one.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider the four points P, Q, R, and S shown in the Greenshields fundamental speed-flow diagram. Denote their corresponding traffic densities by

, and

, respectively. The correct order of these densities is

Diagram for Civil Engineering question 44

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A single-lane highway has a traffic density of 40 vehicles/km. If the time-mean speed and space-mean speed are 40 kph and 30 kph, respectively, the average headway (in seconds) between the vehicles is

Your answerChoose one option.

3.00

2.25

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Assuming that traffic on a highway obeys the Greenshields model, the speed of a shockwave between two traffic streams (P) and (Q) as shown in the schematic is ______ kmph. (in integer)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE CE concept:speed PYQs

Question 62

Question 63

Question 63

Question 46

Question 50

Question 28

Question 28

Question 44

Question 44

Question 63