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- Question
A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is
Options- A. 0.25
- B. 0.50
- C. 0.75
- D. 1.0
- Correct Answer
- 0.50
- 1. For night landing, the thresholds are lighted
Options- A. green
- B. red
- C. white
- D. yellow Discuss
- 2. On B.G. tracks the distance of outer signal from station limit is kept
Options- A. 510 m
- B. 520 m
- C. 530 m
- D. 540 m
- E. 550 m Discuss
- 3. The notch angle for maximum discharge over a triangular notch, is
Options- A. 30°
- B. 60°
- C. 90°
- D. 120° Discuss
- 4. In scanty rainfall regions, the camber provided will be
Options- A. nil
- B. flatter
- C. steeper
- D. None of these. Discuss
- 5. The radius of curvature of the arc of the bubble tube is generally kept
Options- A. 10 m
- B. 25 m
- C. 50 m
- D. 100 m Discuss
- 6. The solid angles are measured in
Options- A. degrees
- B. grades
- C. radians
- D. steradians. Discuss
- 7. The absolute minimum sight distance required for stopping a vehicle moving with a speed of 80 km ph, is
Options- A. 120 m
- B. 200 m
- C. 640 m
- D. none of these. Discuss
- 8. The expected out turn of 12 mm plastering with cement mortar is
Options- A. 2.5 sq m
- B. 4.0 sq m
- C. 6.0 sq m
- D. 8.0 sq m
- E. 10 sq m Discuss
- 9. An ideal flow of a liquid obeys
Options- A. Continuity equation
- B. Newton's law of viscosity
- C. Newton's second law of motion
- D. dynamic viscosity law, Discuss
- 10. Attracting groynes are built
Options- A. perpendicular to the bank
- B. inclined down stream
- C. inclined up stream
- D. none of these. Discuss
More questions
Correct Answer: green
Correct Answer: 540 m
Correct Answer: 90°
Correct Answer: flatter
Correct Answer: 100 m
Correct Answer: steradians.
Correct Answer: 120 m
Correct Answer: 8.0 sq m
Correct Answer: Continuity equation
Correct Answer: inclined down stream
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