SOM-SESSION11-4TH SEM

Deflection of open coil spring is calculated by ________

• $\frac{64WR^3n}{d^4\cos\alpha}\left(\sin\alpha\right)$

• $Sin2\alpha+\cos^2\alpha$

• $\frac{64WR^3n}{d^4\cos\alpha}\left(\frac{\cos^2\alpha}{G}+\frac{2\sin^2\alpha}{E}\right)$

• $\frac{64WR^3n}{d^4\cos\alpha}\left(\frac{\sin^2\alpha}{G}+\frac{2\cos^2\alpha}{E}\right)$

Shear stress fs in Open coil helical spring=

• $\frac{16WR}{\pi d^3}\left(\cos\alpha+1\right)$

• $\frac{16WR}{\pi d^3}\left(\sin\alpha+1\right)$

• $\frac{64WR}{\pi d^3}\left(Sin^2\alpha+1\right)$

• None

In open coil helical spring,The helix angle  $\propto$   =

•  $10\degree$  

• More than  $10\degree$  

• Less than  $10\degree$  

• None

In series,ensembled spring Total force,F =

• F1+F2

• F1=F2

• F1/F2

• None

In series ensembled spring,The strain e =

• e1+e2

• e1=e2

• e1/e2

• None

In parallel ensembled spring the total force, F=

• F1`+F2

• F1=F2

• F1/F2

• None

In parallel ensembled spring ,The strain e=

• e1+e2

• e1=e2

• e1/e2

• None

Open coil helical spring is an example of __________

• Bending spring

• Tensile spring

• Leaf spring

• Torsional spring