SSC-JUNIOR ENGINEER (Civil & Structural) Online Exam 2017 (Part-IV)

Total Questions: 50

41. A steel plate d × b is sandwiched rigidly between two timber joists each D × B/2 in section. The moment of resistance of the beam for the same maximum permissible stress o in timber and steel will be:

Where Young's modulus of steel is m times that of the timber?

Correct Answer: Β.

42. The radius of gyration of a section of area A and least moment of inertia I about the centrodial axis is:

Correct Answer: C. √I/A

43. In the truss shown below, the force in member BD is

Correct Answer: A. 100 t compressive

44. The force in AD of the truss shown in figure below:

Correct Answer: C. 0.5 t compression

45. If D and d are external and internal diameters of a circular shaft respectively, its polar moment of inertia is:

Correct Answer: D.

46. Pick up the correct statement from the following:

Correct Answer: D. All options are correct

47. If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:

Correct Answer: D. Q = S × F

48. A two hinged parabolic arch of span / and rise h carries a load varying from zero at the left end to w per unit run at the right end. The horizontal thrust is.

Correct Answer: D.

49. The maximum Bending Moment due to an isolated load in a three-hinged parabolic arch (span I, rise h) having one of its hinges at the crown, occurs on either side of the crown at a distance

Correct Answer: D. I/(3√2)

50. The equivalent length of a column of length L having both the ends hinged is

Correct Answer: B. L