# Practice Test: Question Set - 07

**1.**

*m*_{1}and*m*_{2}are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if- (A)

*m*=

*m*

_{1}+

*m*

_{2}

- (B)

*m*=

*m*

_{1}+

*m*

_{2}+ 1

- (C)

*m*=

*m*

_{1}+

*m*

_{2}+ 2

- (D)

*m*=

*m*

_{1}+

*m*

_{2}+ 3

**2. The maximum B.M. due to an isolated load in a three hinged parabolic arch, (span**

*l*, rise*h*) having one of its hinges at the crown, occurs on either side of the crown at a distance- (A)

*l*/4

- (B)

*h*/4

- (C)

*l*/2√3

- (D)

*l*/3√2

**3. The greatest load which a spring can carry without getting permanently distorted, is called**

- (A) Stiffness

- (B) Proof
resilience

- (C) Proof
stress

- (D) Proof
load

**4. The force in**

*AC*of the truss shown in the given figure, is- (A) 5

*t*tension

- (B) 4

*t*tension

- (C) 4

*t*compression

- (D) 5

*t*compression

**5. A bar**

*L*metre long and having its area of cross-section*A*, is subjected to a gradually applied tensile load*W*. The strain energy stored in the bar is- (A)

*WL*/2

*AE*

- (B)

*WL*/

*AE*

- (C)

*W*

^{2}

*L*/

*AE*

- (D)

*W*

^{2}

*L*/2

*AE*

**6. The maximum bending moment for a simply supported beam with a uniformly distributed load**

*w*/unit length, is- (A)

*WL*/2

- (B)

*WL*

^{2}/4

- (C)

*WL*

^{2}/8

- (D)

*WL*

^{2}/12

**7. The force in**

*CD*of the truss shown in given figure, is- (A) 3

*t*compression

- (B) 3

*t*tension

- (C) Zero

- (D) 1.5

*t*compression

**8. An isolated load**

*W*is acting at a distance a from the left hand support, of a three hinged arch of span 2*l*and rise*h*hinged at the crown, the horizontal reaction at the support, is- (A)

*Wa*/h

- (B)

*Wa*/2

*h*

- (C) 2

*W*/

*ha*

- (D) 2

*h*/

*Wa*

**9. At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by**

- (A) Depth
of the section

- (B) Depth of the
neutral axis

- (C) Maximum
tensile stress at the section

- (D) Maximum
compressive stress at the section

**10. The ratio of the area of cross-section of a circular section to the area of its core, is**

- (A) 4

- (B) 8

- (C) 12

- (D) 16

**11. The ratio of maximum and average shear stresses on a rectangular section, is**

- (A) 1

- (B) 1.25

- (C) 1.5

- (D) 2.5

**12. In the truss shown in the given figure, the force in member**

*BC*is- (A) 100

*t*compressive

- (B) 100

*t*tensile

- (C) Zero

- (D) Indeterminate

**13. If a concrete column 200 × 200 mm in cross-section is reinforced with four steel bars of 1200 mm**

^{2}total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm^{2}and*E*is 15_{s}*E*_{c}- (A) 264 MN

- (B) 274 MN

- (C) 284 MN

- (D) 294 MN

**14. In plastic analysis, the shape factor for rectangular section, is**

- (A) 1.4

- (B) 1.5

- (C) 1.6

- (D) 1.7

**15. A masonry dam (density = 20,000 N/m**

^{3}) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be- (A) 75 N/m

^{2}

- (B) 750 N/m

^{2}

- (C) 7500 N/m

^{2}

- (D) 75000 N/m

^{2}

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