Calculate the flexural rigidity of a beam, given that the bending moment of the beam is 20, Youngs modulus is 2 x 10⁵ newtons per square meter and the moment of inertia is 20 (millimeter)⁴.

If the diameter of the rivet hole is 10 millimeters, calculate the shearing area at the cross section of the rivet.

Calculate the twisting moment acting on the shaft which undergoes a torsional shear stress of 21 newtons per square millimeter. The diameter of the shaft is 300 millimeters and the polar moment of inertia of the shaft is 100 (millimeter)4.

The efficiency of a riveted joint is __________.

In a helical gear, the helix angle for a single helical gear ranges from _______.

In a screw thread, the nominal diameter represents the _________.

In a long bearing, the ratio of the length of the journal to the diameter of the journal is ________.

What is the value of margin of a riveted joint which is kept to prevent the tearing of the riveted plates at the edges? Here d is the diameter of the rivet hole

If the strength of the key and the shaft is equal, then the length of the key will be _________.

Which one is the correct expression for equivalent twisting moment? Here, M is the bending moment and T is the twisting moment

____________ are used to connect two non-parallel or intersecting shafts which are coplanar in nature.