Download Aptitude Crack
img not found img not found

UPSC Civil Service Exam Questions

Q1:

A circular shaft subjected to torsion undergoes a twist of 1° in a length of 120 cm. If the maximum shear stress induced is limited to 1000 kg/cm2 and if modulus of rigidity G = 0.8 x 106 kg/cm2, then the radius of the shaft should be

A π/18

B 18/π

C π/27

D 27/π

ANS:D - 27/π

from The Torsion Equation we have,
T/J=GO/L=Fs/R here consider only GO/L= Fs/R,
From the data we have theta = 1, l = 120cm, toue = 1000kg/cm^2 and G = 0.8 X 10^6,
0.8 x 10^6 x 1/120 = 1000/R then Radius of shaft R = 27/3.142(Phi).



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.