# Practice Test: Question Set - 11

**1. The vertical reaction for the arch is**

- (A)

*wa*/2

*l*

- (B)

*wl*/

*a*

- (C)

*wa*/

*l*

- (D)

*wa*

^{2}/2

*l*

**2. Flat spiral springs**

- (A) Consist of
uniform thin strips

- (B) Are
supported at outer end

- (C) Are wound by
applying a torque

- (D) All the
above

**3. In plastic analysis, the shape factor for a circular section, is**

- (A) 1.5

- (B) 1.6

- (C) 1.7

- (D) 1.75

**4. In case of a simply supported rectangular beam of span**

*L*and loaded with a central load*W*, the length of elasto-plastic zone of the plastic hinge, is- (A)

*L*/2

- (B)

*L*/3

- (C)

*L*/4

- (D)

*L*/5

**5. Pick up the correct statement from the following:**

- (A) Hoop strain
of the walls of a cylinder due to liquid is (

*pd*/2

*tE*) (1 - 1/2

*m*)

- (B) Longitudinal
strain in the walls of a cylinder due to liquid is (

*pd*/2

*tE*) (1/2 - 1/

*m*)

- (C) Volumetric
change in the cylinder due to liquid is

*(*

*pd*/2

*tE*) (5/2 - 2/

*m*)

- (D) All the
above

**6. The stiffness of the close coil helical spring is**

- (A)

*d*

^{4}

*N*/8

*D*

^{3}

*n*

- (B)

*d*

^{4}

*N*/4

*D*

^{3}

*n*

- (C) 4

*D*

^{3}

*N*/

*d*

^{4}

*n*

- (D) 8

*D*

^{3}

*N*/

*d*

^{4}

*n*

**7. The ratio of the deflections of the free end of a cantilever due to an isolated load at 1/3rd and 2/3rd of the span, is**

- (A) 1/7

- (B) 2/7

- (C) 3/7

- (D) 2/5

**8. The ratio of the length and diameter of a simply supported uniform circular beam which experiences maximum bending stress equal to tensile stress due to same load at its mid span, is**

- (A) 1/8

- (B) 1/4

- (C) 1/2

- (D) 1/3

**9. The ratio of moments of inertia of a triangular section about its base and about a centroidal axis parallel to its base, is**

- (A) 1.0

- (B) 1.5

- (C) 2.0

- (D) 3.0

**10. The ratio of shear stress and shear strain of an elastic material, is**

- (A) Modulus of
Rigidity

- (B) Shear
Modulus

- (C) Modulus of
Elasticity

- (D) Both (

*a*) and (

*b*)

**11. For permissible shear stress**

*f*, the torque transmitted by a thin tube of mean diameter_{s}*D*and wall thickness*t*, is- (A) (

*Ï€D*

^{2}/2)

*t f*

_{s}- (B) (

*Ï€D*/2)

*t f*

_{s}- (C)

*Ï€D*

^{2}

*t f*

_{s}- (D) (

*Ï€D*

^{2}

*t*

^{2}/4)

*f*

_{s}**12. At yield point of a test piece, the material**

- (A) Obeys
Hooke's law

- (B) Behaves in
an elastic manner

- (C) Regains its
original shape on removal of the load

- (D) Undergoes
plastic deformation

**13. For the close coil helical spring of the maximum deflection is**

- (A)

*WD*

^{3}

*n*/

*d*

^{4}

*N*

- (B) 2

*WD*

^{3}

*n*/

*d*

^{4}

*N*

- (C) 4

*W*

^{2}

*D*

^{3}

*n*/

*d*

^{4}

*N*

- (D) 8

*WD*

^{3}

*n*/

*d*

^{4}

*N*

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