Free Printable Day 47-Nov 7-worksheet-Btech-Curves

Worksheets

Day 47-Nov 7-worksheet-Btech-Curves

Total questions: 15

Worksheet time: 10mins

Name

Class

Date

A (a) curve consists of two circular arcs of same/different radii with their centre of curvature on opposite side of common tangent.

Minimum rate of change of centrifugal acceleration is —————-m/s³

0.35

0.5

0.65

0.75

A curve with convexity upward and positive deviation angle represents:

(a)

For a transition curve of length 80 m with radius 250 m, the shift is closest to:

(a)

Which vertical curve uses Headlight Sight Distance (HSD) as the design control?

Summit curve

Horizontal curve

Valley curve

Transition curve

For summit curves, the recommended IRC shape is a parabolic curve, although an ideal curve is theoretically circular.

True

False

Valley curves are designed primarily to provide sufficient stopping sight distance under daylight conditions.

True

False

Assertion (A): Transition curves are provided so that centrifugal force is introduced gradually. Reason (R): Because the radius of the transition curve varies from infinity to zero.

Both A and R are true, and R is the correct explanation

Both A and R are true, but R is NOT the correct explanation

A true, R false

A false, R true

Select the correct formula for the rate of change of centrifugal acceleration C.

$C = \dfrac{80}{75 + V}$

$C = \dfrac{75}{80 + V}$

$C = \dfrac{80}{V}$

$C = 80(75 + V)$

10.

which of the following are vertical curves ?

Valley curve

Summit curve

Both a and b

none

11.

Select the correct expression for the shift of a transition curve.

$\text{Shift} = \dfrac{L^{2}}{24R}$

$\text{Shift} = \dfrac{L}{24R}$

$\text{Shift} = \dfrac{L^{2}}{12R}$

$\text{Shift} = \dfrac{24R}{L^{2}}$

12.

For plain and rolling terrains, choose the correct relation for the length of transition curve based on super-elevation, where X is pavement raising.

$L_c = 150X$

$L_c = 75X$

$L_c = 150/X$

$L_c = 100X$

13.

Deviation angle N for vertical curves is defined as which of the following?

Algebraic difference of intersecting gradients

Geometric mean of intersecting gradients

Absolute sum of intersecting gradients

Product of intersecting gradients

14.

In valley curve design, what headlight height and beam angle are used?

0.75 m and 1°

1.0 m and 2°

0.60 m and 1.5°

0.75 m and 0.5°

15.

A vertical summit curve is formed at the intersections of two gradients, +5% and -5%. The length of the summit curve needed to provide a stopping sight distance of 100 m will be

(a)

100 %

Day 47-Nov 7-worksheet-Btech-Curves

Total questions: 15

Worksheet time: 10mins

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