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The maximum stress in a steel wire of 10 mm diameter bent into a circular arc is
50 MPa. Determine the radius of bent.
Take E = 2x105 N/mm?

A) 10m B) 15m C) 20m D) 25m

An | section of 200 mm deep and 160 mm wide has 16 mm thick flanges and 5 mm
thick web. The beam is subjected to a shear force of 200 kN. The beam is kept at
horizontal. Shear stress developed in the flange just above the web is 58.27 MPa.
Calculate the shear stress developed in the web just at the junction.

A) 58.27 MPa B) 9.55 MPa

C) 56.92 MPa D) 9.32 MPa

A circular shaft of diameter 200 mm is subjected to a torque of 78.54 kN—m. The
maximum torsional stress induced is 50 MPa. Calculate torsional stress at a point
situated at a radial distance of 40 mm from the center line of the shaft.

A) 30 MPa B) 20MPa C) 40 MPa D) 50 MPa

A cylindrical shell of 2 m long and 100 cm internal diameter and 10 mm metal thickness
is subjected to an internal pressure of 2.4 N/mm?. The efficiency of circumferential
joint and longitudinal joint are 80% and 60% respectively. Calculate circumferential
stress and longitudinal stress in MPa.

A) 120, 60 B) 150, 100

C) 200,75 D) 150, 75

Choose the correct relationship between bending moment ‘M’, shear force ‘F’ and
rate of loading ‘W’.

dF dF _

—=-W --- = ॥५॥
A) dx 8) dx

dw dM

---=-ः ವರವ
) dx 0) dx ‏الا‎

“If anumber of forces are simultaneously acting on a particle, then the resultant of these
forces will have the same effect as produced by all the forces”. This is known as

A) Principle of superposition

B) Principle of transmissibility

C) Principle of physical independence of forces
)

D) Principle of resolution of forces