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- Question
A prestressed concrete rectangular beam of size 300 mm x 900 mm is prestressed with an initial prestressing force of 700 kN at an eccentricity of 350 mm at midspan. Stress at top of the beam due to prestress alone, in N/mm2 is
Options- A. 46 (tension)
- B. 2.59 (compression)
- C. zero
- D. 8.64 (compression)
- Correct Answer
- 46 (tension)
- 1. Kinetic friction may be defined as
Options- A. friction force acting when the body is just about to move
- B. friction force acting when the body is in motion
- C. angle between normal reaction and resultant of normal reaction and limiting friction
- D. ratio of limiting friction and normal reaction. Discuss
- 2. A scissors cross-over consists of
Options- A. two pairs of points, four acute angle crossings and two obtuse angle crossings
- B. four pairs of points, four acute angle crossings and four obtuse angle crossings
- C. four pairs of points, six acute angle crossings and two obtuse angle crossings
- D. two pairs of points, six acute angle crossings and four obtuse angle crossings. Discuss
- 3. The Mohr's straight theory is based on the following fact :
Options- A. Material fails essentially by shear
- B. Ultimate strength of the material is determined by the stress in the plane of slip
- C. Failure criterion is independent of the intermediate principal stress
- D. All the above. Discuss
- 4. If a column is subjected to dead load and super imposed load only, the maximum ratio
should not be greater than
Options- A. 180
- B. 250
- C. 350
- D. 400 Discuss
- 5. Maximum strain theory for the failure of a material at the elastic limit, is known as
Options- A. Guest's or Trecas' theory
- B. St. Venant's theory
- C. Rankine's theory
- D. Haig's theory
- E. Von Mises's theory. Discuss
- 6. Snow consists of
Options- A. snow crystals
- B. rimed snow crystals
- C. snow flakes
- D. All of these Discuss
- 7. Pick up the correct statement from the following:
Options- A. Styrene resin is produced from ethylene which is made from petroleum
- B. Styrene resin is light in weight
- C. Styrene resin transmits ultraviolet waves of light
- D. Styrene resin is used to manufacture utensils which are unaffected by chemicals
- E. All the above. Discuss
- 8. The minimum head room over a stair must be
Options- A. 200 cm
- B. 205 cm
- C. 210 cm
- D. 200 cm
- E. 230 cm Discuss
- 9. Number of links per metre length of a chain are
Options- A. 2
- B. 5
- C. 8
- D. 10
- E. 20 Discuss
- 10. Stainless steel resists corrosion due to
Options- A. carbon
- B. sulphur
- C. vanadium
- D. chromium
- E. maganese. Discuss
More questions
Correct Answer: friction force acting when the body is in motion
Correct Answer: four pairs of points, six acute angle crossings and two obtuse angle crossings
Correct Answer: All the above.
Correct Answer: 180
Correct Answer: St. Venant's theory
Correct Answer: All of these
Correct Answer: All the above.
Correct Answer: 210 cm
Correct Answer: 5
Correct Answer: chromium
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