Consider a circular cross-section which experiences an internal torsional load T=17 Nm, an internal bending moment M_y=24 Nm, and an internal shear force V= 10 kN. All loads act in the directions shown in the figure below. The cross-section has a diameter, d=69 mm.

Given these internal loads in the cross-section, calculate the stresses at point B.
Determine the normal stress, alphaB, and shear stress tauB, at point B in MPa

Ans: SigmaB = 0.7441, TauB = -28.7895
I need help getting to the answer.

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms