# Download GTU B.Tech 2020 Summer 4th Sem 3140603 Structural Analysis I Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Summer 4th Sem 3140603 Structural Analysis I Previous Question Paper

Seat No.: ________
Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER? IV EXAMINATION ? SUMMER 2020
Subject Code: 3140603 Date:27/10/2020
Subject Name: Structural Analysis-I
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS
Q.1 (a) Define statically determinate and indeterminate
03
structures.

(b) Determine the radius (eccentricity e) of core for a hollow
04
circular cross section.

(c) A steel rod 500mm2 in cross section and 2m long is
07
vertically suspended from a rigid support. Determine the
height from which a weight of 100N should be allowed to
fall on the collar so as to produce a maximum stress of 40
N/mm2 in the rod. E=2x105 N/mm2

03
impact.

(b) State and prove Maxwell's reciprocal theorem.
04

(c) A beam simply supported over a span of 6m is carrying a
07
point load of 50 kN at 1.20 m from right hand support.
Calculate using Macaulay's Method the position and
amount of maximum deflection. Take EI=20,000 kNm2.

OR

(c) A cantilever beam of span 'l' is subjected to udl `w' on the
07
entire span. Find the slope and deflection at the free end
by Conjugate beam method.
Q.3 (a) Distinguish between Truss and Frame.
03

(b) Write the assumptions and limitations of Euler's formula.
04

(c) A pier supports a vertical load of 50 kN as shown in figure
07
1. F

ind the stresses at each corner of the pier.
OR

Q.3 (a) Derive the expressions for Hoop and longitudinal stresses
03
in a thin cylinder.

(b) Explain Eddy' theorem
04

(c) A mild steel tube 4m long, 30 mm internal diameter and
07
4mm thick is used as strut with both the ends hinged. Find
the ends are fixed?
Q.4 (a) Define: 1)Resilience, 2) Proof Resilience and 3) Modulus
03
of Resilience

(b) Define a conjugate beam and how we can determine slope
04
and deflection?

(c) Analyze the beam shown in figure 2 by moment
07
distribution method.

OR

1

Q.4 (a) Discuss middle third rule.
03

(b) Explain static and kinematic indeterminacy
04

(c) Discuss the stability conditions for a dam subjected to
07
hydrostatic pressure.
Q.5 (a) Discuss various types of Arches.
03

(b) Derive the expression for strain energy stored in a beam.
04

(c) A propped cantilever beam of span `L' is subjected to a
07
point load `P' at mid span. Determine the reactions at the
supports.

OR
Q.5 (a) Define slenderness ratio, radius of gyration and effective
03
length for a long column.
(b) Derive the expression for horizontal reaction, tension at
04
the ends for a uniformly loaded cable.
(c) Check the stability and calculate the degree of redundancy
07
for the trusses shown in figure 3 and 4

Figure-1
Figure-2
Figure-3
Figure-4
2