str analysis- mcq

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RAJIV GANDHI UNIVERSITY OF KNOWLEDGE TECHNOLOGIES

Civil Engineering Department

End Semester Exam / SEM-2

Subject: Structural Analysis [CE2203] Dt: 19th

Apr 2012

Time: 3 Hours Max. Marks: 60

Note: This section consists of 40 questions. Each question carries ONE mark.

Note: Angle taken in counter clock wise direction is considered as positive, Forces directed

along positive x and positive y axes are considered as positive.

1. If E=200GPa, I=500x106mm

4, deflection at B of below fig.?

a. 100 mm b. 120 mm

c. 150 mm

d. None of above

2. Find the displacement at ‘C’?

a. 3

3

Pa

EI

b. 32

3

Pa

EI

c. 3Pa

EI

d. 34

3

Pa

EI



3. What is the deflection of mid span ‘BC’, length of member is l?

a. 3

48

Wl

EI

b. 3

348

Wl

EI

c. 35

348

Wl

EI

d. Zero

4. Area of member is 300 mm2 and E=200KN/ mm

2 then what is the vertical

displacement at B?

a. 0.20

b. 0.22

c. 0.33

d. 0.44



5. Determine the slope at ‘B’?

a. 300

EI

b. 600

EI

c. 450

EI

d. 750

EI

6. Determine the slope at ‘B’, if E=200GPa and I=60x106 mm

4?

a. 0.0094 rad

b. 0.0200 rad

c. 0.1020 rad

d. Not possible

7. Determine the vertical deflection at B if A=1200 mm2 and E=200E6 for a

member?



a. 3.32 mm

b. 1.28 mm

c. 0.35 mmd. 0.20 mm

8. In above problem determine the horizontal deflection at B?

a. 3.32 mm

b. 1.28 mm

c. 0.35 mm

d. 0.20 mm

9. How many zero forces member in the given truss, if length of member is

equal?

a. 1

b. 2

c. 3

d. 4

10. Slope deflection method presented by prof.________in____year.

a. George A. Maney, 1915

b. Maxwell, 1916

c.

Betti, 1964d. None of above

11. Slope deflection method can be used to only

a. Statically determinate structures

b. Statically indeterminate beam with rigid joints

c. Statically indeterminate frame with rigid joints

d. Both b and c

e. All of above



12. The slope deflection equation at the end B of member BC for the frame

shown in the given figure will be

a. 22

BC C B

EI M

b. 22

BC B C

EI M

c. 22

BC B C

EI M

d. 22

BC C B

EI M

13. The fixed end moment MFAB for the fixed beam with having udl of w/meter

on half span shown in fig. is

a. 211

192

wl

b. 5

48

wl

c. 1148

wl

d. 48

wl

14. Compatibility conditions all essentially required to solve

a. Complex truss

b. Redundant frame

c. Compound truss

d. None of above



15. What is modified equation for M bc?

a. 2

3

2

cb bbc

bc

EI M M M

l

b. 2

3

2

cb bbc

bc

EI M M M

l

c. 2

3

2

bc bbc

bc

EI M M M

l

d. 2

2bcbc b c

EI

M M l

16. If a moment M is applied to the hinged end of a prismatic propped

cantilever, then moment at the fixed end will be?

a. M

b. 2

M

c. 3

M

d. 4

M

17. A fixed beam AB of length ‘l’ having constant flexural rigidity EI caries

two point loads at C and D shown in figure, numerically the maximum

bending moment will occur?

a. At C & D and will be equal to2

9

Pl

b. Between C & D and will be equal to9

Pl

c. At A & B and will be equal to2

9

Pl

d. Between A & C and also between B & D.



18. What is the moment M bc at support B for a beam shown in fig.1 if AB is

2EI and BC is EI?

a. 0 kNm

b. 5 kNm

c. 3.75 kNm

d. 2.5 kNm

19. In above problem carry over will develop?

a. Yes

b. No

20. What is the total degree of indeterminacy both internal and external of the

plane frame shown below?

a. 11

b. 10

c. 12

d. 13



21. For the fixed beam shown in fig, the influence line for the bending moment

at the mid –span of the beam is best represented as

a) b)

c) d)None

22. An influence line represents the variation of either the

a. Moment

b. Both shear and moment

c. Deflection

d. Both moment and deflection

e. All of above

f. None of above

23. The shape of in influence line diagram for maximum bending moment in a

simply supported beam isa. Rectangular

b. Triangular

c. Parabolic

d. Circular



24. Sum of the distribution factors for moments due to sway of a story is equal

to

a. 0.25 b. -0.5

c. -1

d. 1

e. 1.5

25. Which statement is incorrect for the influence line

a. Influence line consists of straight line segments only for staticallydeterminate structure, since the effects are always related linearly to

the effects are always related linearly to distance.

b. Influence line consists of straight line segments only for statically

indeterminate structure, since the effects are always related linearly to

the effects are always related linearly to distance.

c. The ordinate at any point represents on the value of the effects when

the unit load is acting at the corresponding point one the structure.

d.

Both a & ce. All of above

26. Consider the beam ABCD and the influence line as shown below. The

influence line pertains to

a. Reaction at A, R A

b. Shear force at B, VB

c. Shear force on the left of C

d. Shear force on the right of C



27. The below diagram shows a simply supported girder beam of span 10

meters carrying three point loads. Find the vertical reaction at B.

a. 175 KN

b. 160 KN

c. 180 KN

d. It’s not possible.28. According to the Muller- Bresler’s principles state the influence line is the

a. Parabolic

b. Straight line

c. Deflection curve

d. Both a & b

e. Both b & c

29. Find the shear force at the section k for the loaded girder shown in fig.

a. 65.71 KN

b. 45.71 KN

c. 111.42 KN

d. 20 KN

30. The cable resist external loads by

a. Tension

b. Compression

c. Bending

d. Compression and bending



31. The shape of cable under horizontal uniformly distribution load is

a. Parabolic

b. Catenaryc. Circular

d. Triangular

32. An arch resist the external load by

a. Normal thrust

b. Normal thrust and bending moment

c. Bending moment and radial shear

d. Normal thrust, radial shear and bending moment

33. Identify the type of the arch

a. Fixed arch

b. Tied arch

c. Three hinged arch

d. None of above34. Cable can be made of

a. Mild steel

b. High strength steel

c. Stainless steel

d. All of above

e. None of above

35. Stiffening girder belong toa. Three hinged

b. Two hinged

c. Un-stiffened

d. Hinge less

e. Both a & b



36. If temperature increase what will happen to the three hinged arches

a. Stress will increase

b. Stress will decreasec. None of above

37. The cable is define as the structure in pure tension having the funicular

shape

a. True

b. False

38. The horizontal thrust at each support

a. 0

b. Wc. W/2

d. W/3

39. loads to be considered in the analysis of arches are

a. Externally applied loadings

b. Support settlements

c. Temperature effect

d. Rib shortening and shrinkage

e.

All the above40. Parts of a typical arch are

a. crown

b. abatements

c. soffit

d. voussoir

e. all the above

f. a,b and c



Note: This section consists of 2 questions. You have to give answer both the

questions in descriptive. Maximum marks are 20 only

1. Give answer of below question in descriptively. (10 marks)

[Using Slope deflection/Moment distribution method only]

a) What is the difference between slope deflection and moment

distribution method?(1 marks) b) If EI=2E6 for all the member, determine the moment at each

support (3 marks)

c) Draw the Bending moment diagram (1 marks)

d) Draw the shear force diagram (1 marks)

e) If roller support settle by 10 mm what will be support moment

and draw the bending moment diagram for it.(4 marks)

2 m 3 m 5 m5 m

2 m

2 m

20 KN

10KN 15KN20 KN/m



2. Give answer of below question in descriptively. (10 marks)a) Draw the ILD for the force in member GH, AB and GC then determines the

maximum force that can be developed in this member due to a uniform liveload of 3kN/m that acts on the bridge deck along the bottom cord of the

truss. (2+2+1 marks)

Ora) Calculate the force in the member in the pin-jointed truss. (5 marks)

Assume E=200 KN/mm2, A=100 mm

2 and also co-efficient of expansion is

= 10x10-6

oC, all dimensions are in ‘m’



b) Determine the resultant forces at the pins A, B and C of the three hingedarched roof truss. (2 marks)

c) Parabolic cable with UDL loading of 20 KN/m throughout the section finds

the tension in cable and length of cable? [span=10 m and sag=4m](1 marks)

d) Compute the abs. maximum B.M for the beam having span of 30m and

loaded with a series of concentrated load moving across the span as shown

in fig. (2 marks)

30 m

100 KN 250 KN 150 KN 100 KN

3 m 3 m 3 m2 m

100 KN

str analysis- mcq

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