ESE 2022 ME - Technical Quiz 26

During a rolling process, a sheet of  thick is rolled down to  thickness. If the roll of diameter rotates at , calculate the velocity of strip  at the neutral point.

A smooth flat rectangular plate is placed edgewisw in a stream of fluid. At what fraction of the length from the leading edge would the drag force on the front portion be equal to half of the total drag force ? (Assume the boundary layer to be laminar).

A hollow shaft of 1 m length is designed to transmit a power of 30 kW at 700 rpm. The maximum permissible angle of twist in the shaft is . The inner diameter of the shaft is 0.7 times the outer diameter. The modulus of rigidity is 80 GPa. The outside diameter (in mm) of the shaft is _______

The shell of a boiler is 2 m in diameter and the plates are 2 cm thick. By how much % the working pressure will be reduced if the efficiency of the joint is 80% as compared to 100% efficiency
[Assume safe working stress for the shell plates as 70 MPa]

For the cantilever beam shown below, calculate the maximum shear stress developed:

Which of the following is incorrect with respect to increase in condenser pressure?

A 1 kg block is resting on a surface with Coefficient of friction μ = 0.1 A force of 0.8 N is applied to the block as shown in the figure. The friction force is

The figure below shows a steel rod of 25 mm2 cross sectional area. It is loaded at four points, K, L, M and N. Assume E_steel =200GPa.The total change in length of the rod due to loading is