The helix angle is very small about 2⁰. The spring is open coiled spring.
Explanation: When the helix angle is small, the plane containing each coil is almost at right angles and hence it is called closed coiled spring.
Which of the following function can the spring perform?
Explanation: Spring can easily perform all the listed functions.
The longest leaf in a leaf spring is called centre leaf.
Explanation: It is called master leaf.
Multi leaf springs are not recommended for automobile and rail road suspensions.
Explanation: They are highly used in automobile and rail road suspensions.
The helical spring ad wire of helical torsion spring, both are subjected to torsional shear stresses.
Explanation: The wire of helical torsion sprig is subjected to bending stresses.
If spring index=2.5, what can be concluded about stresses in the wire?
Explanation: If indexis <3 then stresses are high due to curvature effect.
The spring index is the ratio of wire diameter to mean coil diameter.
Explanation: It is the ratio of mean coil diameter to wire diameter.
A spring with index=15 is prone to buckling.
Explanation: Due to large variation, such a spring is prone to buckling.
If the spring is compressed completely and the adjacent coils touch each other,the the length of spring is called as?
If number of coils are 8 and wire diameter of spring 3mm, then solid length is given by?
Explanation: Solid length=8×3.