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Two solid metal shafts, are connected by the gears shown. Given:

$a=30mm$

$b=130mm$

$c=30mm$

$d=320mm$

$d_1=90mm$

$d_2=130mm$

$G=200$GPa

Answer the following:

a$)$ If the applied tourque on shaft $AB,T=230$ N$.$m$,$ then the tourque generated in shaft DC $=1001\mathrm{.}45$ N$.$m $[$Absolute value$]$

$x$

One possible correct answer is: $0$

b$)$ Discard your answer in Part

$($a$)$ and considering $T_{DE}=590$

N$.$m and diameter ${?}_{DE}=40mm,$ then the maximum shear stress in shaft DE $=0\mathrm{.}047$

MPa $[$Absolute value$]$

$x$

One possible correct answer is: $46\mathrm{.}95$

c$)$ If the angle of twist of shaft $AB$ is not to be greater than $2,$ and considering the applied torque on shaft $AB=230$ N$.$m$,$ then the minimum required shaft $AB$ diameter $=56\mathrm{.}32$ mm

$$

One possible correct answer is: $16\mathrm{.}48$