Q1. (A). A 25mm square cross-section bar of length 300mm carries an axial compressive load of 50kN. Determine the stress set up in the bar and its change of length when the load is applied. For the bar material E= 200 GN/m². Q2. A beam AB, 1.2 m long, is simply-supported at its ends A and B and carries two concentrated loads, one of 10 kN at C, the other 15 kN at D. Point C is 0.4 m from A, point D is 1 m from A. Draw the S.F. and B.M. diagrams for the beam. Q3. A solid steel shaft (A) of 50 mm diameter rotates at 250 rev/min. Find the greatest power that can be transmitted for a limiting shearing stress of 60 MN/m2 in the steel.

Q1. (A). A 25mm square cross-section bar of length 300mm carries an axial compressive load of 50kN. Determine the stress set up in the bar and its change of length when the load is applied. For the bar material E= 200 GN/m². Q2. A beam AB, 1.2 m long, is simply-supported at its ends A and B and carries two concentrated loads, one of 10 kN at C, the other 15 kN at D. Point C is 0.4 m from A, point D is 1 m from A. Draw the S.F. and B.M. diagrams for the beam. Q3. A solid steel shaft (A) of 50 mm diameter rotates at 250 rev/min. Find the greatest power that can be transmitted for a limiting shearing stress of 60 MN/m2 in the steel.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.

Question

Q1. (A). A 25mm square cross-section bar of length 300mm carries an axial
compressive load of 50kN. Determine the stress set up in the bar and its change of
length when the load is applied. For the bar material E= 200 GN/m².
Q2. A beam AB, 1.2 m long, is simply-supported at its ends A and B and carries
two concentrated loads, one of 10 kN at C, the other 15 kN at D. Point C is 0.4
m from A, point D is 1 m from A. Draw the S.F. and B.M. diagrams for the
beam.
Q3. A solid steel shaft (A) of 50 mm diameter rotates at 250 rev/min. Find the
greatest power that can be transmitted for a limiting shearing stress of 60
MN/m2 in the steel.

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