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  • Question

  • A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100°C. If ?steel = 0.000012/C°, Esteel = 0.2 MN/mm2, the tensile force developed at a temperature of 50°C, is


  • Options
  • A. 80 N/mm2
  • B. 100 N/mm2
  • C. 120 N/mm2
  • D. 150 N/mm2

  • Correct Answer
  • 120 N/mm2 

    • More questions

    • 1. An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than

    • Options
    • A. 5%
    • B. 10%
    • C. 15%
    • D. 20%
    • E. 25%
      • Discuss
    • 2. The ratio of circumferential stress to the longitudinal stress in the walls of a cylindrical shell, due to flowing liquid, is

    • Options
    • A.
    • B. 1
    • C.
    • D. 2
      • Discuss
    • 3. Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be

    • Options
    • A. nil
    • B. 5
    • C. 10
    • D. 15
    • E. 20
      • Discuss
    • 4. The minimum percentage of chemical ingredient of cement is that of

    • Options
    • A. magnesium oxide
    • B. iron oxide
    • C. alumina
    • D. lime
    • E. silica.
      • Discuss
    • 5. The rainfall cycle period in India is taken as

    • Options
    • A. 15 years
    • B. 20 years
    • C. 25 years
    • D. 30 years
    • E. 35 years.
      • Discuss
    • 6. Concrete containing

    • Options
    • A. silicious aggregates, has higher co-efficient of expansion
    • B. igneous aggregates, has intermediate coefficient of expansion
    • C. lime stones, has lowest co-efficient of expansion
    • D. All the above.
      • Discuss
    • 7. Most commonly used solvent in oil paints, is

    • Options
    • A. petroleum
    • B. spirit
    • C. coaltar
    • D. turpentine.
      • Discuss
    • 8. Stones used for rubble masonry must be

    • Options
    • A. soft
    • B. hard
    • C. light
    • D. heavy.
      • Discuss
    • 9. In railways a triangle is mainly provided for

    • Options
    • A. diverting trains from the main line to branch line
    • B. crossing over between parallel tracks
    • C. changing direction of engines through 180°
    • D. shunting wagons in yards.
      • Discuss
    • 10. The most economical section for a column, is

    • Options
    • A. rectangular
    • B. solid round
    • C. flat strip
    • D. tubular section
    • E. hexagonal.
      • Discuss

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