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 _________
Your input ____
2
GATE ME 2012
MCQ (Single Correct Answer)
+2
-0.6
A solid steel cube constrained on all six faces is heated so that the temperature rises uniformly by $$\Delta T.$$ If the thermal coefficient of the material is $$\alpha $$, young's modulus is $$E$$ and the Poisson's ratio is $$\upsilon $$, the thermal stress developed in the cube due to heating is
A
$$ - {{\alpha \left( {\Delta T} \right)E} \over {\left( {1 - 2\upsilon } \right)}}$$
B
$$ - {{2\alpha \left( {\Delta T} \right)E} \over {\left( {1 - 2\upsilon } \right)}}$$
C
$$ - {{3\alpha \left( {\Delta T} \right)E} \over {\left( {1 - 2\upsilon } \right)}}$$
D
$$ - {{\alpha \left( {\Delta T} \right)E} \over {3\left( {1 - 2\upsilon } \right)}}$$
3
GATE ME 2006
MCQ (Single Correct Answer)
+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
4
GATE ME 2006
MCQ (Single Correct Answer)
+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 GATE ME 2006 Strength of Materials - Simple Stress and Strain Question 14 English
A
40 MPa
B
50 MPa
C
70 MPa
D
120 MPa
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