Quiz MECH 231 A solid 25 mm-diameter shaft is subjected to the following torques [according to the right hand
rule] Ti = 200N. m, T2 = -450N. m, Tz = 350N. m, and T4 = -100 N. m as shown in Figure.
The bearings shown allow the shaft to turn freely. (a) Plot a torque diagram showing the internal
torque in segments (1), (2), and (3) of the shaft. (b) The angles of twist in the three shaft segments
[01.02.03]. The shear modulus of the steel is G = 80 GPa.
T4
T3
T2
(1)
Ti
(3)
0.5 m
B
0.7 m
D
0.6 m

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

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.

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false