A consolidated-drained triaxial test was conducted on a normally consolidated clay. The results are as follows: - Confining pressure, σ! = 250 kPa - Deviatoric stress at failure, (σ")# = 275 kPa Determine: (a) angle of friction ϕ′; (b) angle θ that the failure plane makes with the major principal plane; and (c) normal and shear stresses on the failure plane

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.