"Closed coil helical spring":

What is the term used to describe the wire diameter of a closed coil helical spring?

• a) Pitch
• b) Index
• c) Spring constant
• d) Wire gauge

Which type of closed coil helical spring is more prone to buckling failure?

• a) Open-ended springs
• b) Ground ends springs
• c) Both have equal chances of failure
• d) None of the above

What is the deflection of a spring?

• a) Maximum shear stress
• b) Maximum bending moment
• c) Change in length due to load
• d) Change in length due to natural frequency

What is the load-carrying capacity of a spring called?

• a) Compression ratio
• b) Spring constant
• c) Elasticity modulus
• d) Shear stress

Which material is preferred for the manufacture of closed coil helical springs?

• a) Cast iron
• b) Aluminium
• c) Mild steel
• d) Copper