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karan sharma

· started a discussion

· 1 Months ago

wrong answer (Question: 317670.0 )

B is the correct answer

Question:

If two shafts of the same length, one of which is hollow, transmit equal torques and have equal maximum stress, then they should have equal 

  

Options:
A)

Polar moment of inertia

B)

Polar modulus of section

C)

Diameter

D)

Angle of twist

  

Solution:

Ans: (a)

manish kumar

· commented

· 1 Months ago

yaa bro B is correct one

Knowledge Expert

· commented

· 1 Months ago

Dear Student,

yes you are right. shortly we will be fixed it.

We known that,

T/J = Tow/R = G*theta/L.

Answer polar modulus is J/R.

So for shafts, in which one is hollow, polar moment of inertia(J) cannot be same. So the same polar modulus can do the required task.

Keep learning keep solving
Best wishes
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