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WorksheetsSprings-basics
Total questions: 10
Worksheet time: 5mins
A spring used to absorb shocks and vibrations in automobiles is
closely-coiled helical spring
open-coiled helical spring
torsion spring
leaf spring
In a close coiled helical spring, the spring index (C) is given by D/d where D and d are the mean coil diameter and wire diameter respectively. For considering the effect of curvature, the Wahl’s stress factor K is given by
(4C+4)/C
{(4C-1)/(4C-4)} +{0.615/C}
{(4C+1)/(4C+4)} +{0.615/C}
{(4C-1)/(4C+4)}
Springs are used
to absorb shocks and vibrations
to store and release energy
to measure force
for any of the above functions
Spring index is
ratio of coil diameter to wire diameter
load required to produce unit deflection
its capability of storing energy
indication of quality of spring
Name the type of spring shown in picture
helical compression spring
multi-leaf spring
spiral spring
belleville spring
When the helical extension spring is subjected to axial tensile force, the type of stress induced in the spring wire is
tensile stress
compressive stress
bending stress
torsional shear stress
The spring operates
within plastic limit
within elastic limit
Within fracture limit
Any of the options
If a spring is cut down into two springs, the stiffness of cut springs will be
half
same
double
unpredictable
If two springs are in parallel then their overall stiffness will be
half
same
double
unpredictable
The stiffness of spring is,
deflection per unit of axial force
force per unit cross-sectional area of spring
ratio of mean coil diameter to wire diameter
force required to produce unit deflection
