Higher Study | Strength of Materials

If T = mean torque (N-m in) and N = revolutions per minute of the shaft then what will be the power (P) transmitted by the shaft in Watts?

ক

\(P=\frac{2 \pi N T}{60}\)

খ

\(P=\frac{2 \pi N T}{120}\)

গ

\(P=\frac{2 \pi N T}{30}\)

ঘ

\(P=\frac{\pi N T}{60}\)

Which one of the given statement is WRONG about torsion?

ক

Force required for torsion is normal to the longitudinal axis and exactly at the centroid.

খ

It causes rotation of all the fibres about longitudinal axis

গ

Torsion is the twisting of a structural member subjected to a couple that produces rotation about longitudinal axis

ঘ

Radii remain straight after rotation

According to pure bending theory, which of the following claims is factually incorrect?

ক

Every layer has a different center of curvature

খ

Beam material is isotropic

গ

Beam material is homogenous

ঘ

Permissible stresses are under Elastic Limit

Conditions of symmetry in torsional problem ensures that: (i) Plane sections originally normal to the plane of twist remain plane after twist. (ii) There is no lengthening or shortening of the shaft. (iii) Straight diameters are carried into straight diameters by the twisting deformation Which of the above statements are correct?

ক

(i) and (ii)

খ

All (i), (ii) and (iii)

গ

(i) and (iii)

ঘ

(ii) and (iii)

Which of the following is/are an assumption(s) made in the theory of Simple Bending?

ক

The material of the beam that is subjected to bending is homogenous

খ

The effect of shear stresses is neglected

গ

The beams have a symmetrical crosssection and they are subjected to bending only in the plane of symmetry

ঘ

All of the options

Higher Study | Strength of Materials | Torsion of Shaft

If T = mean torque (N-m in) and N = revolutions per minute of the shaft then what will be the power (P) transmitted by the shaft in Watts?

Which one of the given statement is WRONG about torsion?

According to pure bending theory, which of the following claims is factually incorrect?

Which of the following is/are an assumption(s) made in the theory of Simple Bending?