A glass ball is shot to hit a wall from a point on a smooth floor. If the ball r

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Question
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is
Options
A. 0.25
B. 0.33
C. 0.40
D. 0.50
E. 0.55

Correct Answer

0.50

4. Modified moment of inertia of sections with a single web, is equal to moment of inertia of the section about Y-Y axis at the point of maximum bending moment and is multiplied by the ratio of
Options
A. area of compression flange at the minimum bending moment to the corresponding area at the point of maximum bending moment
B. area of tension flange at the minimum bending moment of the corresponding area at the point of maximum bending moment
C. total area of flanges at the maximum bending moment to the corresponding area at the point of maximum bending moment
D. none of these.

5. Pick up the correct statement from the following:
Options
A. Runway edge from the landing side, is called threshold
B. Localizer indicates to the pilot his position with respect to the proposed alignment
C. The glide slope indicates the correct angle of descent
D. L.O.M. and L.M.M. help the pilot to judge his position for the runway
E. All the above.

9. Pick up the correct statement from the following
Options
A. Approach of the water line in a flumed channel section should not be steeper than
B. Departure of the water line from a flumed channel section should not be steeper than 30�
C. Approach of the water line should not be steeper than 30� and departure line not steeper than in a flumed channel section
D. Approach and departure of the water line in a flumed channel section, should not be steeper than

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