053/2016

Maximum : 100 marks

Time : 1 hour and 15 minutes

1. A steel bar 10 mm x 10 mm cross section is subjected to an axial tensile load of 20 kN. If the
length of bar is 1 m and E = 200 GPa, then elongation of the bar is :
ക്ര lmm (3) 0.5 mm
(0) 0.75 णण D L5mm

9. The modulus of rigidity and poisson’s ratio of ‏م‎ material are 80GPa and 0.3 respectively,
Its youngs modulus will be :

(ಯ) 160 GPa (B) 208GPa
(0) 120GPa ்‌ (D) 104 GPa

3. The equivalent torque on a shaft, when it is subjected to bending moment M and torque 198;

வ 1147 (3) (113 2 7}
ற ‏نات‎ ளட 7} |

(© ண்ட]

4. If the value of poisson’s ratio is zero, then it means that :
‏نف‎ the lateral strain is high
(B) the material is perfectly plastic
(C) there is no linear strain in the material
(0) none of these

5. The outside diameter of മ hollow shaft is twice its inside diameter. The ratio of its torque
carrying capacity to that of solid shaft of same material and same outside diameter is :

(ക 4 @ 2
(0) 15/16 (D) 1/16

6. Two shafts are made of the same material. The diameter of first is twice that of second. The
ratio of power which can be transmitted by first ghaft and second is

ക 2 : (ए) 4
(¢) 18 (10) 178

7. A solid shaft is subjected to a bending moment and twisting moment of 3 kNm and 4 kNm
respectively. The equivalent bending moment 18:

ಯ) 4kNm (B) 3kNm
(C) 3.5kNm (D) 4.5kNm

[7.7.0.1