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Strength of Materials - Engineering

Q1:

If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is

A 0.20

B 0.30

C 0.50

D 0.60

ANS:C - 0.50

Since, shear efficiency = shear strength/solid plate strength.

So, shear strength = fs*(P-d)*t and solid plate strength = P*t*fs.

So, 50% = fs*(p-d)*t/P*t*fs.

So, 1/2 = (P-d)/P.

So, 1/2 = 1-d/P.

That is, d/P = 1/2.

So d/P = 0.50 answer.