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PPSC CE_TRANSPORTATION_QUIZ 1 (App update required to attempt this test)
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On what factors does stopping sight distance depends?
- Speed of vehicle
- longitudinal friction coefficient
- braking efficiency
- Reaction time
Calculate the safe stopping sight distance (in m) for the descending gradient of 3% for a design speed of 80 km/h. Take coefficient of friction as 0.35 and total reaction time as 2 seconds.
Calculate the lag distance for a design speed of 65 km/hr assuming the coefficient of friction as 0.36 and total reaction time of driver as 2.5 seconds?
Assuming a longitudinal coefficient of friction to be 0.5, the resulting retardation of a vehicle being brought to stop is, nearly (only magnitude)
If a descending gradient of 1 in 25 meets an ascending gradient of 1 in 40, then the length of valley curve required for a head light sight distance of 100 m will be(m)
A valley curve is formed by a descending gradient of 1 in 30 meeting an ascending gradient of 1 in 20. Calculate the length of valley curve for comfort condition if design speed on the curve is 70 kmph. Assume coefficient of centrifugal acceleration to be 0.54 m/s3.
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Tags :AE & JE Exams
Apr 22AE & JE Exams