SSC-JUNIOR ENGINEER (Civil & Structural) Online Exam 2016 (Part-II)

Total Questions: 50

1. Match List-I with List-II

List-IList-II Description
(a) Young’s Modulus(1) Lateral strain to linear strain within elastic limit
(b) Poisson’s Ratio(2) Stress–strain within elastic limit
(c) Bulk Modulus(3) Shear stress to shear strain within elastic limit
(d) Rigidity Modulus(4) Direct stress to corresponding volumetric strain

 

Codes:

Option(a)(b)(c)(d)
A.2143
B.3142
C.3412
D.2413

 

Correct Answer: A.
Solution:

2. The ratio of Young's modulus to modulus of rigidity for a material having Poisson's ratio 0.2 is ________.

Correct Answer: A. 2.4
Solution:

3. What is the slope at the end of simply supported beam of span 2 m and load 5 kg/unit length over the entire span?

Correct Answer: Β. 5/3 ΕΙ
Solution:No explanation given in the book

4. A circular shaft is subjected to a torque 'T' which is half of the bending moment applied, then the ratio of maximum bending stress and maximum shear stress is _________.

Correct Answer: B. 4
Solution:No explanation given in the book

5. When both ends of a column are fixed, the crippling load is F. If one end of the column is made free, the value of crippling load will be changed to __________.

Correct Answer: C. F/16
Solution:

6. A cantilever beam is shown in the figure. Find the magnitude and the direction of moment to be applied at free end for zero vertical deflection.

Correct Answer: C. 12 kNm clockwise
Solution:No explanation given in the book

7. What will be the relation between E (Young's modulus of Elasticity) and K (bulk modulus), when Poisson's ratio is 0.25?

Correct Answer: C. E = 1.5K
Solution:

8. Moment of Inertia of a triangular section, about an axis passing through its centre of gravity is _________.

Correct Answer: B. bh³/36
Solution:Moment of inertia of triangular section about centroidal axis parallel to base

Consider a triangular section ABC of base width b and height h as shown in the figure.

9. The hoop stress induced in a thin cylinder by winding it with wire under tension will be ________.

Correct Answer: A. compressive
Solution:Hoop or circumferential stress: This is the stress which is set up in resisting the bursting effect of the applied pressure and can be most conveniently treated by considering the equilibrium of the cylinder. The hoop stress induced in a thin cylinder by winding it with wire under tension will be compressive.

10. The shape of cable under uniformly distributed horizontal load is

Correct Answer: A. parabolic
Solution:Parabolic Cable: Assuming that the cable in Fig. carries vertical load of intensity q uniformly distributed with respect to the horizontal span I, then eq. (i) becomes