Engineering Answers

3t^2+2e^3t+1/t+2cos3t

An overflow spillway with vertical u/s face is to be designed for a flood of 2100m3/s. The level of the spillway crest is at R.L of 130.0 and the river bed at R.L. of 100.0. The end walls of the spillway are 79m apart and there are 4 round-nosed piers, each 1m wide. Determine the total head over the crest. Take C=2.2 and Ka=0.1. Also tabulate the coordinates of the d/s profile

on one side, water stands level with the top of the vertical rectangular gate 1.2m wide and 1.8m high hinged at the bottom, on the other side, water stands 0.90m below the top. what horizontal force applied at the top of the gate is required to open it

A 4 in diameter solid cylinder (d) of height 3.75 in weighing 0.85 mmersed in liquid (γ=52.0 lb/ft3 ) contained in a tall, Ib isi upright metal cylinder aving a diameter of D 5 in he sol is immersed in liquid metal cylinder having a diameter of D =5 in. Before immersion the liquid was 3.0 in deep. At what level will the solid cylinder float?

A polystyrene rod consisting of two cylindrical portions AB and

BC is restrained at both ends and supports two 6-kip loads as

shown. Knowing that E 5 0.45 3 106

psi, determine (a) the reactions at A and C, (b) the normal stress in each portion of the rod.

In a single riveted butt joint with two equal cover strips, having zigzag arrangement of riveting the thickness of the plate 9 mm. Consider allowable tensile, crushing and shear stress are 115 MPa, 155 MPa and 70 MPa respectively. Calculate:-1) diameter of rivet and 2) pitch of riveted joint.

A turbojet aircraft flies at an altitude of 10000 m at a speed of 300 m/s. Compression ratio 10,

turbines inlet section is 1000°C and the mass flow rate of the air is 30 kg/s, from this engine

Calculate the maximum possible thrust. In addition, the heating value of the fuel is assumed to be 8400 kJ/kg.

fuel calculation.

Steam at 173.6 degrees celcius and with a specific entropy of 6 kJ/ kg-K undergoes a polytropic process with n= 1.18 until the pressure becomes 2 MPa. (a) What is the final temperature of the steam? (b) What is the work nonflow and steady flow of the process? (c) What is the heat transferred?