Highway Engineering

1

For calculating the tractive force along an upgrade of an asphalt road, the most probable value of the co-efficient of traction resistance `mu` is assumed

A. `1/10`

B. `1/20`

C. `1/30`

D. `1/100`

E. `1/50`

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2

If V is speed of a moving vehicle, r is radius of the curve, g is the acceleration due to gravity, W is the width of the carriageway, the super elevation is

A. `(WV)/(gr)`

B. `(W^2V)/(gr)`

C. `(WV^2)/(gr)`

D. `(WV)/(gr^2)`

E. `(WV^2)/(gr^2)`

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3: If E is the modulus of elasticity of the concrete in kg/cm², d is the slab thickness in cm, is the Poisson's ratio for the concrete, k is the sub-grade modulus kg/cm³, the radius r of relative stiffness in cm,

A. `root [4]((Ed^3)/(12(1 - mu^2)K)`

B. `root [4]((Ed^3)/(12(1 + mu^2)K)`

C. `root [4]((Ed^2)/(12(1+mu^2)K)`

D. `root [4]((Ed^2)/(12(1 - mu^2)K)`

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4: The standard equation of a cubic parabolic transition curve provided on roads, is

A. `Y = (x^3)/(6RL)`

B. `Y = (x)/(6RL)`

C. `Y = (l^2)/(6RL)`

D. `Y = (l^3)/(6RL)`

E. none of these.

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5: The safe stopping sight distance D, may be computed from the equation

A. `D = 0.278 Vt + (V^2)/(254f)`

B. `D = 0.254 Vt + (V^2)/(278f)`

C. `D = 0.254 Vt + (V^2)/(225f)`

D. `D = 0.225 Vt + (V^2)/(254f)`

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