1
GATE CE 2000
MCQ (Single Correct Answer)
+1
-0.3
Pick the incorrect statement from the following four statements:
A
On the plane which carries maximum normal stress, the shear stress is zero.
B
Principal planes are mutually orthogonal.
C
On the plane which carries maximum shear stress, the normal stress is zero.
D
The principal stress axes and principal strain axes coincide for an isotropic material
2
GATE CE 1991
MCQ (Single Correct Answer)
+1
-0.3
The maximum value of Poisson's ratio for an elastic material is
A
0.25
B
0.5
C
0.75
D
1.0
3
GATE CE 1991
MCQ (Single Correct Answer)
+1
-0.3
A cantilever beam of tubular section consists of 2 materials copper as outer cylinder and steel as inner cylinder. It is subjected to a temperature rise of $$20^\circ C$$ and $$\alpha_{copper}\;>\;\alpha_{steel}$$ the stresses developed in the tubes will be
A
compression in steel and tension in copper.
B
compression in copper and tension in steel.
C
No stress in both.
D
Tension in both the materials.
4
GATE CE 1991
MCQ (Single Correct Answer)
+1
-0.3
In a linear elastic structural element
A
Stiffness is directly proportional to flexibility.
B
Stiffness is inversely proportional to flexibility.
C
Stiffness is equal to flexibility.
D
Stiffness and flexibility are not related.
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