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 Poissons ratio.

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.

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

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 tensile strength of a double transverse fillet weld, given that the size of the weld is 5 millimeters and the length of the weld is 10 millimeters. The shear stress on the weld is 100 newtons per square millimeter.

Calculate the radius of curvature of a beam on which a bending stress of 1000 newtons per square meter is applied. The distance from extreme fiber to the neutral axis of the beam is 50 meters and the value of the Young's modulus for the material of the beam is 2 x 105 newtons per square meter.

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

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

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.

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

Calculate the crushing area per rivet, given that the diameter of the rivet hole is 20 millimeters and the thickness of the plate on which the riveting is done is 30 millimeters.