A planar truss tower structure is shown in the figure.Consider the following statements about the external and internal determinacies of the truss.P. Externally determinateQ. External static indeterminacy = 1R. External Static Indeterminacy = 2S. Internally DeterminateT. Internal Static Indeterminacy = 1U. Internal Static Indeterminacy = 2Which one of the following options is correct?

P-False; Q-True; R-False; S-False; T-True; U-False

P-False; Q-True; R-False; S-False; T-False; U-True

P-False; Q-True; R-False; S-False; T-True; U-False

P-False; Q-False; R-True; S-False; T-False; U-True

P-True; Q-True; R-False; S-True; T-False; U-True

A compound truss may be formed by connecting two simple rigid frames by

three bars intersecting at a point

All the members of the planar truss (see figure), have the same properties in terms of area of cross-section (A) and modulus of elasticity (E).For the loads shown on the truss, the statement that correctly represents the nature of forces in the members of the truss is:

There are 3 members in tension, and 2 members in compression

There are 2 members in tension, 2 members in compression, and 1 zero-force member

There are 2 members in tension, 1 member in compression, and 2 zero-force members

There are 2 members in tension, and 3 zero-force members

A given determinate truss is loaded with gravity loads. Under these loads different nodes undergo deflection horizontally and vertically. Thereafter the truss is subjected to a temperature drop of 50°C in the lower chord only. The coefficient of expansion or contraction α = 11.7 × 10-6/°C. Which of the following statements is true?

Horizontal deflection along lower chords nodes shall change but vertical deflection shall not change

Vertical and horizontal deflection along lower chord nodes remains the same

Vertical and horizontal deflection along lower chord nodes shall change.

Horizontal deflection along lower chords nodes shall change but vertical deflection shall not change

Consider the plane truss with load P as shown in the figure. Let the horizontal and vertical reactions at the joint B be HB and VB, respectively and VC be the vertical reaction at the joint C.Which one of the following sets gives the correct values of VB, HB and VC?

${V_B} = \frac{P}{2};{H_B} = 0;{V_C} = \frac{P}{2}$

${V_B} = 0;{H_B} = 0;{V_C} = P$

${V_B} = \frac{P}{2};{H_B} = 0;{V_C} = \frac{P}{2}$

${V_B} = \frac{P}{2};{H_B} = P\left( {\sin 60^\circ } \right);{V_C} = \frac{P}{2}$

${V_B} = P;{H_B} = P\left( {\cos 60^\circ } \right);{V_C} = 0$

47 + Mcqs in Analysis Truss in Prestressed Concrete Structures Page 1 McqOptions

1.	What is the aim of workability is to use the lower percentage?
A.	Coarse aggregates
B.	Fine aggregates
C.	Gravel
D.	Sandstone
Answer» C. Gravel

Discussion

2.	The cement content limit is not permitted unless special consideration has been considered in design?
A.	300
B.	400
C.	375
D.	475
Answer» E.

Discussion

3.	One of the functions involved in construction management is?
A.	House owners
B.	Tax planners
C.	Land
D.	Area of site
Answer» C. Land

Discussion

4.	Trusses must be analyzed for forces developed during ____________
A.	Fabrication and erection
B.	Twisting and lining
C.	Grouting
D.	Shortcrete
Answer» B. Twisting and lining

Discussion

5.	When loads are applied to the chords the bending moment developed are determined by assuming chord as a ____________
A.	SSB
B.	Continuous
C.	Point
D.	UDL
Answer» C. Point

Discussion

6.	The trusses are analyzed for dead, wind and ____________
A.	Wave loads
B.	Fire actions
C.	Snow loads
D.	Tensile loads
Answer» D. Tensile loads

Discussion

7.	Based on experimental investigations, the members of truss are analyzed on assumption that the joints are _____________
A.	Rollers
B.	SSB
C.	UDL
D.	Hinged
Answer» E.

Discussion

8.	In the pin-jointed truss shown in the figure, the static degree of indeterminacy is
A.	2
B.	1
C.	3
D.	4
Answer» D. 4

Discussion

9.	In the following questions, j represents no. of joints and r represents no. of external forces.If a structure has 2j – r no. of members, then it will be ____.
A.	Stable
B.	Unstable
C.	Depends upon structure
D.	Depends upon magnitude of load
Answer» D. Depends upon magnitude of load

Discussion

10.	For the truss shown in the figure, the force in the member PQ is
A.	F
B.	$\frac{F}{{\sqrt 2 }}$
C.	$\sqrt 2 F$
D.	2F
Answer» B. $\frac{F}{{\sqrt 2 }}$

Discussion

11.	A planar truss tower structure is shown in the figure.Consider the following statements about the external and internal determinacies of the truss.P. Externally determinateQ. External static indeterminacy = 1R. External Static Indeterminacy = 2S. Internally DeterminateT. Internal Static Indeterminacy = 1U. Internal Static Indeterminacy = 2Which one of the following options is correct?
A.	P-False; Q-True; R-False; S-False; T-False; U-True
B.	P-False; Q-True; R-False; S-False; T-True; U-False
C.	P-False; Q-False; R-True; S-False; T-False; U-True
D.	P-True; Q-True; R-False; S-True; T-False; U-True
Answer» B. P-False; Q-True; R-False; S-False; T-True; U-False

Discussion

12.	A cantilever truss as shown in the figure is subjected to a horizontal load 'P' at joint A. The total number of zero force members in the truss is
A.	6
B.	8
C.	9
D.	10
Answer» E.

Discussion

13.	In the truss shown below, the force in member DC is
A.	100 t compressive
B.	100 t tensile
C.	zero
D.	indeterminate
Answer» D. indeterminate

Discussion

14.	Force in member 'AB' of the truss shown below is:-
A.	$25\sqrt 2$ kN tensile
B.	25 kN tensile
C.	$25\sqrt 2$ kN compressive
D.	25 kN compressive
Answer» B. 25 kN tensile

Discussion

15.	Number of zero force members in the truss subjected to a force as shown in the figure is:
A.	0
B.	1
C.	2
D.	3
Answer» D. 3

Discussion

16.	A truss containing ‘j’ joint and ‘m’ members, will be a simple truss if
A.	j = 2m - 3
B.	m = 2j - 3
C.	m = 3j - 2
D.	j = 3m - 2
Answer» C. m = 3j - 2

Discussion

17.	Consider the planar truss shown in the figure (not drawn to the scale)Neglecting self-weight of the members, the number of zero-force members in the truss under the action of the load P is
A.	6
B.	7
C.	8
D.	9
Answer» D. 9

Discussion

18.	Consider the pin-jointed plane truss shown in the figure (not drawn to scale). Let RP, RQ, and RR denote the vertical reactions (upward positive) applied by the supports at P, Q, and R, respectively, on the truss. The correct combination of (RP, RQ, and RR) is represented by
A.	(30, - 30, 30) kN
B.	(10, 30, - 10) kN
C.	(20, 0, 10) kN
D.	(0.60, -30) kN
Answer» B. (10, 30, - 10) kN

Discussion

19.	In the given truss, which of the following is a zero force member?
A.	BH
B.	EF
C.	AB
D.	AG
Answer» C. AB

Discussion

20.	If the number of pairs in a truss is 'j' and the number of members is 'm', the correct formula for the determinate truss will be:
A.	m = 2j - 3
B.	m = 3j - 2
C.	j = 3m - 2
D.	j = 2m - 3
Answer» B. m = 3j - 2

Discussion

21.	A plane truss with applied loads is shown in the figure.The members which do not carry any force are
A.	FT, TG, HU, MP, PL
B.	ET, GS, UR, VR, QL
C.	FT, GS, HU, MP, QL
D.	MP, PL, HU, FT, UR
Answer» B. ET, GS, UR, VR, QL

Discussion

22.	Calculate the horizontal displacement of the support ‘B’ for the truss shown in the figure below. All members have 4000 mm2 area and modulus of elasticity 2 × 105 MPa.
A.	10 mm
B.	0.15 mm
C.	0.2 mm
D.	5 mm
Answer» C. 0.2 mm

Discussion

23.	Given that J is no. of joints. B and R are no. of members and no. of reactions.If B = 5, R = 3 and J = 4, then the truss is ______.
A.	Statically determinate
B.	Statically indeterminate
C.	Stable
D.	Unstable
Answer» B. Statically indeterminate

Discussion

24.	How many horizontal web members are there in Compound fink truss?
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

25.	A plane truss is shown in the figure (not drawn to scale).Which one of the options contains ONLY zero-force members in the truss?
A.	FG, FI, HI, RS
B.	FI, FG, RS, PR
C.	FI, HI, PR, RS
D.	FG, FH, HI, RS
Answer» C. FI, HI, PR, RS

Discussion

26.	A compound truss may be formed by connecting two simple rigid frames by
A.	two bars
B.	three bars
C.	three parallel bars
D.	three bars intersecting at a point
Answer» C. three parallel bars

Discussion

27.	In case of erection of multiple span truss bridges symmetrical about center line, the erection is started from ________ unit the centre is reached.
A.	Left end
B.	Both ends
C.	Right ends
D.	None of the above
Answer» C. Right ends

Discussion

28.	All the members of the planar truss (see figure), have the same properties in terms of area of cross-section (A) and modulus of elasticity (E).For the loads shown on the truss, the statement that correctly represents the nature of forces in the members of the truss is:
A.	There are 3 members in tension, and 2 members in compression
B.	There are 2 members in tension, 2 members in compression, and 1 zero-force member
C.	There are 2 members in tension, 1 member in compression, and 2 zero-force members
D.	There are 2 members in tension, and 3 zero-force members
Answer» E.

Discussion

29.	A simple truss ABC is supported at A and B as shown in the figure. If a point load (P) along BC is applied at joint C in horizontal direction, then what will be the vertical deflection at C? Assume same C/5 area and same materials (i.e., A, E, I same for all members).
A.	$\frac{PL}{AE}$(↑)
B.	$\frac{2PL}{AE}$(↓)
C.	$\frac{PL}{AE}$(↓)
D.	$\frac{2PL}{3AE}$(↓)
Answer» D. $\frac{2PL}{3AE}$(↓)

Discussion

30.	For the plane truss shown in the figure, the number of zero force members for the given loading is.
A.	4
B.	8
C.	11
D.	13
Answer» C. 11

Discussion

31.	In the truss shown below, force in member BC is –
A.	100 N tensile
B.	zero
C.	100 N compressive
D.	50 N tensile
Answer» C. 100 N compressive

Discussion

32.	In the force method of analysis of indeterminate trusses, if the truss is indeterminate to degree one, the change in length of redundant, member due to unit force is found by using the formula where A is cross-sectional areaI – Moment of Inertian – force in the member due to unit load applicationN – force in the member due to actual loadE – Modulus of Elasticity
A.	$\sum \frac{{nNL}}{{EI}}$
B.	$n\sum \frac{NL}{AE}$
C.	$\sum \frac{nNL}{AE}$
D.	$\sum \frac{NL}{AE}$
Answer» D. $\sum \frac{NL}{AE}$

Discussion

33.	Identify the members with zero member force in the following truss:
A.	AD, DC and EB
B.	AD, DC and CE
C.	AD, AB, and AC
D.	None of the above
Answer» B. AD, DC and CE

Discussion

34.	In the pin-end cantilever truss shown below, member FG had been fabricated 10 mm longer than required. How much will point E deflect vertically?
A.	10 mm
B.	20 mm
C.	30 mm
D.	40 mm
Answer» D. 40 mm

Discussion

35.	A given determinate truss is loaded with gravity loads. Under these loads different nodes undergo deflection horizontally and vertically. Thereafter the truss is subjected to a temperature drop of 50°C in the lower chord only. The coefficient of expansion or contraction α = 11.7 × 10-6/°C. Which of the following statements is true?
A.	Vertical and horizontal deflection along lower chord nodes remains the same
B.	Vertical and horizontal deflection along lower chord nodes shall change.
C.	Horizontal deflection along lower chords nodes shall change but vertical deflection shall not change
D.	None of the above
Answer» C. Horizontal deflection along lower chords nodes shall change but vertical deflection shall not change

Discussion

36.	Consider the frame as shown in the figure.The magnitude of the horizontal support reaction at E is
A.	400 kN
B.	300 kN
C.	250 kN
D.	200 kN
Answer» B. 300 kN

Discussion

37.	Consider the plane truss with load P as shown in the figure. Let the horizontal and vertical reactions at the joint B be HB and VB, respectively and VC be the vertical reaction at the joint C.Which one of the following sets gives the correct values of VB, HB and VC?
A.	${V_B} = 0;{H_B} = 0;{V_C} = P$
B.	${V_B} = \frac{P}{2};{H_B} = 0;{V_C} = \frac{P}{2}$
C.	${V_B} = \frac{P}{2};{H_B} = P\left( {\sin 60^\circ } \right);{V_C} = \frac{P}{2}$
D.	${V_B} = P;{H_B} = P\left( {\cos 60^\circ } \right);{V_C} = 0$
Answer» B. ${V_B} = \frac{P}{2};{H_B} = 0;{V_C} = \frac{P}{2}$

Discussion

38.	THE_CEMENT_CONTENT_LIMIT_WHICH_IS_NOT_PERMITTED_UNLESS_SPECIAL_CONSIDERATION_HAS_BEEN_CONSIDERED_IN_DESIGN:?$
A.	300
B.	400
C.	375
D.	475
Answer» E.

Discussion

39.	The_aim_of_workability_is_to_use_the_lower_percentage_of:$
A.	Coarse aggregates
B.	Fine aggregates
C.	Gravel
D.	Sandstone
Answer» C. Gravel

Discussion

40.	The grade of concrete used for construction of prestressed concrete structures is?
A.	Heavy mix concrete
B.	Design mix concrete
C.	Partially mix concrete
D.	Fully mix concrete
Answer» C. Partially mix concrete

Discussion

41.	Which methods are widely used in project works?
A.	PERT
B.	CRT
C.	TRC
D.	WRE
Answer» B. CRT

Discussion

42.	One of the functions involved in construction management is:
A.	House owners
B.	Tax planners
C.	Land
D.	Area of site
Answer» C. Land

Discussion

43.	Trusses must be analyzed for forces developed during:
A.	Fabrication and erection
B.	Twisting and lining
C.	Grouting
D.	Shortcrete
Answer» B. Twisting and lining

Discussion

44.	When loads are applied to the chords the bending moment developed are determined by assuming chord as a:
A.	SSB
B.	Continuous
C.	Point
D.	UDL
Answer» C. Point

Discussion

45.	The trusses are analyzed for dead, wind and:
A.	Wave loads
B.	Fire actions
C.	Snow loads
D.	Tensile loads
Answer» D. Tensile loads

Discussion

46.	Which action of joint does not affect the forces developed in the members?
A.	Plasticity
B.	Rigidity
C.	Flexural
D.	Ductile
Answer» C. Flexural

Discussion

47.	Based on experimental investigations, the members of truss are analyzed on assumption that the joints are:
A.	Rollers
B.	SSB
C.	UDL
D.	Hinged
Answer» E.

Discussion

10.	For the truss shown in the figure, the force in the member PQ is
A.	F
B.	\(\frac{F}{{\sqrt 2 }}\)
C.	\(\sqrt 2 F\)
D.	2F
Answer» B. \(\frac{F}{{\sqrt 2 }}\)

14.	Force in member 'AB' of the truss shown below is:-
A.	\(25\sqrt 2\) kN tensile
B.	25 kN tensile
C.	\(25\sqrt 2\) kN compressive
D.	25 kN compressive
Answer» B. 25 kN tensile

29.	A simple truss ABC is supported at A and B as shown in the figure. If a point load (P) along BC is applied at joint C in horizontal direction, then what will be the vertical deflection at C? Assume same C/5 area and same materials (i.e., A, E, I same for all members).
A.	\(\frac{PL}{AE}\)(↑)
B.	\(\frac{2PL}{AE}\)(↓)
C.	\(\frac{PL}{AE}\)(↓)
D.	\(\frac{2PL}{3AE}\)(↓)
Answer» D. \(\frac{2PL}{3AE}\)(↓)

32.	In the force method of analysis of indeterminate trusses, if the truss is indeterminate to degree one, the change in length of redundant, member due to unit force is found by using the formula where A is cross-sectional areaI – Moment of Inertian – force in the member due to unit load applicationN – force in the member due to actual loadE – Modulus of Elasticity
A.	\(\sum \frac{{nNL}}{{EI}}\)
B.	\(n\sum \frac{NL}{AE}\)
C.	\(\sum \frac{nNL}{AE}\)
D.	\(\sum \frac{NL}{AE}\)
Answer» D. \(\sum \frac{NL}{AE}\)

37.	Consider the plane truss with load P as shown in the figure. Let the horizontal and vertical reactions at the joint B be HB and VB, respectively and VC be the vertical reaction at the joint C.Which one of the following sets gives the correct values of VB, HB and VC?
A.	\({V_B} = 0;{H_B} = 0;{V_C} = P\)
B.	\({V_B} = \frac{P}{2};{H_B} = 0;{V_C} = \frac{P}{2}\)
C.	\({V_B} = \frac{P}{2};{H_B} = P\left( {\sin 60^\circ } \right);{V_C} = \frac{P}{2}\)
D.	\({V_B} = P;{H_B} = P\left( {\cos 60^\circ } \right);{V_C} = 0\)
Answer» B. \({V_B} = \frac{P}{2};{H_B} = 0;{V_C} = \frac{P}{2}\)

Explore topic-wise MCQs in Prestressed Concrete Structures.

What is the aim of workability is to use the lower percentage?

The cement content limit is not permitted unless special consideration has been considered in design?

One of the functions involved in construction management is?

Trusses must be analyzed for forces developed during ____________

When loads are applied to the chords the bending moment developed are determined by assuming chord as a ____________

The trusses are analyzed for dead, wind and ____________

Based on experimental investigations, the members of truss are analyzed on assumption that the joints are _____________

In the pin-jointed truss shown in the figure, the static degree of indeterminacy is

In the following questions, j represents no. of joints and r represents no. of external forces.If a structure has 2j – r no. of members, then it will be ____.

For the truss shown in the figure, the force in the member PQ is

A cantilever truss as shown in the figure is subjected to a horizontal load 'P' at joint A. The total number of zero force members in the truss is

In the truss shown below, the force in member DC is

Force in member 'AB' of the truss shown below is:-

Number of zero force members in the truss subjected to a force as shown in the figure is:

A truss containing ‘j’ joint and ‘m’ members, will be a simple truss if

Consider the planar truss shown in the figure (not drawn to the scale)Neglecting self-weight of the members, the number of zero-force members in the truss under the action of the load P is

Consider the pin-jointed plane truss shown in the figure (not drawn to scale). Let RP, RQ, and RR denote the vertical reactions (upward positive) applied by the supports at P, Q, and R, respectively, on the truss. The correct combination of (RP, RQ, and RR) is represented by

In the given truss, which of the following is a zero force member?

If the number of pairs in a truss is 'j' and the number of members is 'm', the correct formula for the determinate truss will be:

A plane truss with applied loads is shown in the figure.The members which do not carry any force are

Calculate the horizontal displacement of the support ‘B’ for the truss shown in the figure below. All members have 4000 mm2 area and modulus of elasticity 2 × 105 MPa.

Given that J is no. of joints. B and R are no. of members and no. of reactions.If B = 5, R = 3 and J = 4, then the truss is ______.

How many horizontal web members are there in Compound fink truss?

A plane truss is shown in the figure (not drawn to scale).Which one of the options contains ONLY zero-force members in the truss?

A compound truss may be formed by connecting two simple rigid frames by

In case of erection of multiple span truss bridges symmetrical about center line, the erection is started from ________ unit the centre is reached.

All the members of the planar truss (see figure), have the same properties in terms of area of cross-section (A) and modulus of elasticity (E).For the loads shown on the truss, the statement that correctly represents the nature of forces in the members of the truss is:

A simple truss ABC is supported at A and B as shown in the figure. If a point load (P) along BC is applied at joint C in horizontal direction, then what will be the vertical deflection at C? Assume same C/5 area and same materials (i.e., A, E, I same for all members).

For the plane truss shown in the figure, the number of zero force members for the given loading is.

In the truss shown below, force in member BC is –

Identify the members with zero member force in the following truss:

In the pin-end cantilever truss shown below, member FG had been fabricated 10 mm longer than required. How much will point E deflect vertically?

Consider the frame as shown in the figure.The magnitude of the horizontal support reaction at E is

Consider the plane truss with load P as shown in the figure. Let the horizontal and vertical reactions at the joint B be HB and VB, respectively and VC be the vertical reaction at the joint C.Which one of the following sets gives the correct values of VB, HB and VC?

THE_CEMENT_CONTENT_LIMIT_WHICH_IS_NOT_PERMITTED_UNLESS_SPECIAL_CONSIDERATION_HAS_BEEN_CONSIDERED_IN_DESIGN:?$

The_aim_of_workability_is_to_use_the_lower_percentage_of:$

The grade of concrete used for construction of prestressed concrete structures is?

Which methods are widely used in project works?

One of the functions involved in construction management is:

Trusses must be analyzed for forces developed during:

When loads are applied to the chords the bending moment developed are determined by assuming chord as a:

The trusses are analyzed for dead, wind and:

Which action of joint does not affect the forces developed in the members?

Based on experimental investigations, the members of truss are analyzed on assumption that the joints are: