[Download PDF] ISRO Scientist or Engineer Mechanical 2007 Paper with Solutions

Instructions

For the following questions answer them individually

Question 51

Fora body subjected to direct stresses $$\sigma x, \sigma y$$ and $$\sigma z$$ the direct strain $$ε_x$$ in x direction is (where E and $$\gamma$$ are Young’s Modulus and Poisson’s ratio respectively)

Video Solution

Question 52

A circular shaft subjected to torsion undergoesa twist of $$1^\circ$$ in a length of 120 cm. If the maximum shear stress inducedis limited to 1000kg/cm$$^2$$ and if modulus of rigidity $$G = 0.8 * 10^6 Kg/cm^2$$, then the radius of the shaft should be

Video Solution

Question 53

A hollow shaft of same cross-section area as solid shaft transmits

Video Solution

Question 54

The extension of a mild steel bar 4m long, 2000 mm$$^2$$ cross section under the action of an axial load of 20kN, if E = 2(10$$^5$$) N/mm$$^2$$, is

Video Solution

Question 55

InIsection shear load is resisted mainly by

Video Solution

Question 56

Shear force is

Video Solution

Question 57

Maximum shear stress in Mohr’s circle is equal to

Video Solution

Question 58

If a material expands freely dueto heating it will develop

Video Solution

Question 59

When acolumn is fixed at both ends, corresponding Euler’s critical load is

Video Solution

Question 60

A metal pipe of 1 m diameter contains a fluid having a pressure of 10 kgf/cm$$^2$$. If the permissible tensile stress in the metal is 200 kgf/cm$$^2$$, then the thickness of the metal required for making the pipe would be

Video Solution

CAT Content

ISRO Scientist or Engineer Mechanical 2007

ISRO Scientist or Engineer Mechanical 2007

Fora body subjected to direct stresses $$\sigma x, \sigma y$$ and $$\sigma z$$ the direct strain $$ε_x$$ in x direction is (where E and $$\gamma$$ are Young’s Modulus and Poisson’s ratio respectively)

A circular shaft subjected to torsion undergoesa twist of $$1^\circ$$ in a length of 120 cm. If the maximum shear stress inducedis limited to 1000kg/cm$$^2$$ and if modulus of rigidity $$G = 0.8 * 10^6 Kg/cm^2$$, then the radius of the shaft should be

A hollow shaft of same cross-section area as solid shaft transmits

The extension of a mild steel bar 4m long, 2000 mm$$^2$$ cross section under the action of an axial load of 20kN, if E = 2(10$$^5$$) N/mm$$^2$$, is

InIsection shear load is resisted mainly by

Shear force is

Maximum shear stress in Mohr’s circle is equal to

If a material expands freely dueto heating it will develop

When acolumn is fixed at both ends, corresponding Euler’s critical load is

A metal pipe of 1 m diameter contains a fluid having a pressure of 10 kgf/cm$$^2$$. If the permissible tensile stress in the metal is 200 kgf/cm$$^2$$, then the thickness of the metal required for making the pipe would be

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