Sir this question ....... a. A beam PQ 10 m long has supports at its end P and Q. it carries a point load of 6 kN at 2 m from P and a point load of 6 kN at 8 m from P and u.d.l. of 4 kN between the point loads. Draw the S.F.D. and B.M.D. b. A steel rod of 30 mm diameter and 5 m long is connected to two grips and the rod is maintained at a temperature of 95 K. Find the stress and pull exerted when the temperature falls to 30K if i) The ends don’t yield, ii) the ends yield by yield by 1.2 mm c. Take Young’s modulus of elasticity, E = 2 × 105 MN/m2 and α = 12 × 10-5 / K. d. Calculate the moment of inertia for L-section of dimensions 100 mm × 80 mm × 20 mm along x-x axis and y-y axis paasing through the C.G. of the section. e. Calculate the safe working load for a circular steel strut of 6m length and having diameter 80mm which is hinged at both ends. The factor of safety is 4. Take E=2.1 X 105 N/mm2 . f. A cantilever beam of 6 m span carries a u.d.l. of 4.5kN/m over the whole span. Find the maximum deflection and slope when moment of inertia, I = 2 × 108 mm4 and Young’s Modulus of elasticity, E = 2 × 105 N/mm2 .
Sir this question .......
a. A beam PQ 10 m long has supports at its end P and Q. it carries a point load of 6 kN at 2 m from P and
a point load of 6 kN at 8 m from P and u.d.l. of 4 kN between the point loads. Draw the S.F.D. and
B.M.D.
b. A steel rod of 30 mm diameter and 5 m long is connected to two grips and the rod is maintained at a
temperature of 95 K. Find the stress and pull exerted when the temperature falls to 30K if
i) The ends don’t yield, ii) the ends yield by yield by 1.2 mm
c. Take Young’s modulus of elasticity, E = 2 × 105 MN/m2
and α = 12 × 10-5
/ K.
d. Calculate the moment of inertia for L-section of dimensions 100 mm × 80 mm × 20 mm along x-x axis
and y-y axis paasing through the C.G. of the section.
e. Calculate the safe working load for a circular steel strut of 6m length and having diameter 80mm
which is hinged at both ends. The factor of safety is 4. Take E=2.1 X 105 N/mm2
.
f. A cantilever beam of 6 m span carries a u.d.l. of 4.5kN/m over the whole span. Find the maximum
deflection and slope when moment of inertia, I = 2 × 108 mm4
and Young’s Modulus of elasticity, E = 2
× 105 N/mm2
.
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