1
GATE ME 2012
Numerical
+2
-0
A $$200$$ mm long, stress free rod at room temperature is held between two immovable rigid walls. The temperature of the rod is uniformly raised by $$250$$oC. If the Young's modulus and coefficient of thermal expansion are $$200$$ GPa and $$1 \times {10^{ - 5}}/{}^ \circ C,$$ respectively, the magnitude of the longitudinal stress (in MPa) developed in the rod is _________
2
GATE ME 2006
+2
-0.6
A steel bar of 40 mm × 40 mm square cross-section is subjected to an axial compressive load of 200 kN. If the length of the bar is 2m and E = 200 GPa. The decrement in length of the bar will be
A
1.25 mm
B
2.70 mm
C
4.05 mm
D
5.40 mm
3
GATE ME 2006
+2
-0.6
A bar having a cross-sectional area of 700 mm2 is subjected to axial loads at the positions indicated. The value of stress in the segment BC is
A
40 MPa
B
50 MPa
C
70 MPa
D
120 MPa
4
GATE ME 2004
+2
-0.6
The figure below shows a steel rod of $$25$$ mm2 cross sectional area. It is loaded at four points, K, L, M and N. Assume Esteel $$=$$ $$200$$ GPa. The total change in length of the rod due to loading is
A
$$1\,\,\mu$$m
B
$$-10\,\,\mu$$m
C
$$16\,\,\mu$$m
D
$$20\,\,\mu$$m
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