Which type of nut among the following is used on objects which are subjected to sudden shocks and vibrations?

Calculate the factor of safety of a key in crushing, given that the yield stress in crushing is 400 newtons per square millimeter and crushing stress induced in the key is 100 newtons per square millimeter.

In which type of gear does the pressure angle remains constant?

In the above drawn Mohr's circle for stress, which is the angle of obliquity?

Calculate the maximum shear stress in a circular fillet weld made between a circular rod of 50 millimeters diameter and a plate subjected to a torsional moment of 100 newton millimeters. The size of the weld is 5 millimeters and the diameter of the circular rod is 2 millimeters.

The diameter of a shaft is 100 millimeters. Calculate the width of the key.

Calculate the bearing characteristic number, given that the absolute viscosity of the lubricant is 10 pounds per meter second. The speed of the journal is 20 rpm and the bearing pressure is 10 newtons per square millimeter?

Calculate the diameter of the rivet hole if the thickness of the plate to be riveted is 9 millimeters.

In the above diagram, 's' is the length of the weld and 't' is the thread thickness. If 's' is 5 millimeters and 't' is 10 millimeters, calculate the area at the throat.

The value of the lateral strain in a steel rod is 100 meters and the value of the linear strain in the same rod is 300 meters. Calculate the Poisson's ratio.

The length of a weld under static loading is 70 millimeters and under fatigue loading is 150 millimeters. Calculate the effective length of the weld.