Thursday 29 October 2020

Multiple Choice Questions (MCQ) on Analysis of Continuous Beams (SA-I)

MCQs on Analysis of Continuous Beams (SA-I Module IV)

1

In continuous ABC, span AB of 4 m loaded with central point load of 80 kN and span BC of 6 m loaded with uniformly distributed load of 20 kN/m on whole span. The supports are simple, the moment at support B _______kNm.

a

60

b

78

c

0

d

None of the above

Ans

B

2

In continuous ABC, span AB of 4 m loaded with central point load of 80 kN and span BC of 6 m loaded with uniformly distributed load of 20 kN/m on whole span. The supports are simple, the moment at support A _______kNm.

a

60

b

78

c

90

d

None of the above

Ans

D

3

In continuous ABC, span AB of 4 m loaded with central point load of 80 kN and span BC of 6 m loaded with uniformly distributed load of 20 kN/m on whole span. The supports are simple, the moment at support C _______kNm.

a

60

b

78

c

90

d

None of the above

Ans

D

4

In continuous ABC, span AB of 4 m loaded with central point load of 80 kN and span BC of 6 m loaded with uniformly distributed load of 20 kN/m on whole span. The supports are simple, the area of B M due to 80 kN load is______ .

a

160

b

480

c

320

d

None of the above

Ans

A

5

In continuous ABC, span AB of 4 m loaded with central point load of 80 kN and span BC of 6 m loaded with uniformly distributed load of 20 kN/m on whole span. The supports are simple, the area of B M due to 20 kN/m load is _______.

a

360

b

480

c

320

d

None of the above

Ans

A

6

In continuous ABC, span AB of 4 m loaded with central point load of 80 kN and span BC of 6 m loaded with uniformly distributed load of 20 kN/m on whole span. The supports are simple, the a1x1 for span AB is _________ .

a

160

b

480

c

320

d

None of the above

Ans

C

7

In continuous ABC, span AB of 4 m loaded with central point load of 80 kN and span BC of 6 m loaded with uniformly distributed load of 20 kN/m on whole span. The supports are simple, the a2x2 for span BC is _________ .

a

1080

b

480

c

320

d

None of the above

Ans

A

8

In continuous ABC, span AB of 5 m loaded with central point load of 30 kN and span BC of 5 m loaded with central point load of 50 kN . The supports are simple, the moment at B is________kNm.

a

62.5

b

37.5

c

Zero

d

None of the above

Ans

B

9

In continuous ABC, span AB of 4 m loaded with uniformly distributed load of 15 kN/m and span BC of 4 m loaded with uniformly distributed load of 18 kN/m. The supports are simple, the moment at B is ________kNm.

a

30

b

36

c

42

d

None of the above

Ans

D

10

In continuous ABC, span AB of 4 m loaded with uniformly distributed load of 10 kN/m and span BC of 4 m loaded central point load of 20 kN. The supports are simple, the bending moment at B is_______ kNm.

a

20

b

35

c

Zero

d

None of the above

Ans

B

11

In continuous ABC, span AB of 4 m loaded with uniformly distributed load of 10 kN/m and span BC of 4 m loaded central point load of 20 kN. The supports are simple, the area of B M due to 10 kN/m is_________.

a

53.33

b

40

c

Zero

d

None of the above

Ans

A

12

In continuous ABC, span AB of 4 m loaded with uniformly distributed load of 10 kN/m and span BC of 4 m loaded central point load of 20 kN. The supports are simple, the a2x2 for span BC is __________ .

a

106.67

b

85

c

100

d

None of the above

Ans

D

13

While using three moment equation a fixed end of a continuous beam is replaced by an additional span of _____

a

Zero length

b

Infinite length

c

Zero moment of inertia

d

None of the above

Ans

A

14

The three moment equation is applicable only when ______.

a

The beam is prismatic

b

There is no settlement of supports

c

There is no discontinuity such as hinges within the span

d

The spans are equal

Ans

C

15

The theorem of three moments express the condition of _______.

a

Shear force

b

Support moments

c

Mid-span

moments

d

None of the

above

Ans

B

16

Maxwell-Betti reciprocal theorem is based on ____________.

a

Muller-Breslau principle

b

Principle of least work

c

Principle of superposition

d

None of the above

Ans

C

17

A simply supported beam is loaded with central point

load W, the bending moment at the center is_______.

a

WL/8

b

WL2/4

c

WL/4

d

WL3/4

Ans

C

18

In Clapeyron’s theorem if both ends are simply supported the following statements is correct _______.

a

Ends moments are taken zero

b

Imaginary span on one side is considered

c

Imaginary span is considered on both sides.

d

Ends moments is calculated by considered overhanging part as cantilever portion.

Ans

A

19

A simply supported beam fixed at both ends can be analysis by  ______.

a

Moment area method

b

Conjugate beam method

c

Three moment equation

d

None of the above

Ans

C

20

Continuous beam loaded with central point load W on each span, the free bending moment is________.

a

WL/4

b

WL/8

c

WL/10

d

None of the above

Ans

A

21

Continuous beam loaded with uniformly distributed load

w on each span, the free bending moment is______.

a

wL2/4

b

wL2/8

c

wL2/10

d

None of the above

Ans

B

22

Continuous beam loaded with uniformly distributed load

w on each span, the free bending moment is_________.

a

wL2/4

b

wL2/6

c

wL2/10

d

None of the above

Ans

D

23

Two span continuous beam loaded with eccentric point

load W act at a from left bending support and b from interior support, the free end moment is_______.

a

Wa2b/L

b

Wab/L

c

Wab2/L

d

None of the above

Ans

B

24

Two span continuous beam loaded with central couple M

on each span, the free end moment is_______.

a

M/2

b

M

c

2M

d

None of the above

Ans

A

25

In two span continuous beam moment at supports is __________.

a

Sagging

b

Hogging

c

Both A and B

d

None of the

above

Ans

B

26

In analysis of two span continuous beam by strain energy

method, the redundant force are _________.

a

Fixed

b

Choice to solver

c

Both A and B

d

None of the above

Ans

B

27

In a continuous beam overhanging part act as a __________.

a

Virtual part

b

Propped Cantilever

c

Imaginary part

d

None of the above

Ans

D

28

In a continuous beam, if one of the support is sink then it reflect on______.

a

End moments

b

Support moments

c

Twisting moments

d

Bending moments

Ans

B

29

While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

a

zero length

b

infinite length

c

zero moment of inertia

d

none of the above

Ans

A

30

Principle of superposition is applicable when

a

Deflections are linear functions of applied forces

b

Material obeys Hooke's law

c

The action of applied forces will be affected by small deformations of the structure

d

None of the above

Ans

A

31

If the end B of continuous beam ABC sinks down, then the moment at A will be

a

Zero

b

Anticlockwise

c

Clockwise

d

Infinity

Ans

B

32

A uniform girder simply supported at its ends is subjected to a uniformly distributed load over its entire length and is propped at the centre so as to neutralise the deflection. The net B.M. at the centre will be

a

WL

b

WL/8

c

WL/24

d

WL/32

Ans

D

33

In a two span continuous beam with Simply Supported ends, loaded by UDL, point of contraflexure exist

a

At mid support

b

In both spans near middle support

c

Near end support

d

At the end support

Ans

B

 

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