GATE CE 1990 | GATE CE Year Wise Previous Years Questions

GATE CE 1990

MCQ (Single Correct Answer)

-0.6

A rectangular simply supported prestressed concrete beam of span $$L$$ is subjected to a prestressing force of $$P$$ acting centrally at end sections and the prestress tendons are parabolically draped with maximum eccentricity of $${e_{\max }}$$ at the mid span section. The uniformly distributed upward load $$(W)$$ on the beam due to prestressing will be:

$$16\,\,P\,{e_{\max }}/{L^2}$$

$$4\,\,P\,{e_{\max }}/{L^2}$$

$$12\,\,P\,{e_{\max }}/{L^2}$$

$$8\,\,P\,{e_{\max }}/{L^2}$$

GATE CE 1990

MCQ (Single Correct Answer)

-0.3

The principle of superposition is made use of in structural computations when:

The geometry of the structure changes by a finite amount during the application of the loads.

The changes in the geometry of the structure during the application if the loads is too small and the strain in the structure are directly proportional to the corresponding stresses.

The strains in the structure are not directly proportional to the corresponding stresses, even though the effect of changes in geometry can be neglected.

None of the above conditions are met.

GATE CE 1990

MCQ (Single Correct Answer)

-0.6

The magnitude of the only shear stresses acting at a point in plane stress situation is $$7.5\,N/n{m^2}.$$ The magnitudes of the principle stresses will be:

$$ + \,15.0\,N/n{m^2}$$ and $$ - 7.5\,N/n{m^2}$$

$$ + \,7.5\,N/n{m^2}$$ and $$ - 15.0\,N/n{m^2}$$

$$ + \,7.5\,N/n{m^2}$$ and $$ - 7.5\,N/n{m^2}$$

$$ + \,10.0\,N/n{m^2}$$ and $$ - 7.5\,N/n{m^2}$$

GATE CE 1990

MCQ (Single Correct Answer)

-0.6

Two elastic rods $$AB$$ and $$BC$$ are hinged at $$B$$. The joint $$A$$ is a hinged one, joint $$C$$ is over a roller and the joint $$B$$ is supported on a spring having its stiffness as $$K.$$ GATE CE 1990 Strength of Materials Or Solid Mechanics - Deflection of Beams Question 19 English

GATE CE 1990 Strength of Materials Or Solid Mechanics - Deflection of Beams Question 19 English

A load $$P$$ acts at mid-point of the rod $$BC$$. The downward deflection of joint $$B$$ is:

$$P/K$$

$$2P/K$$

$$P/2K$$

$$0$$

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