Springs Mechanical Design Questions Answers - Set 01 - ObjectiveBooks
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# Practice Test: Question Set - 01

1. When the helical extension spring is subjected to axial tensile force, the type of stress induced in the spring wire is,
(A) Tensile stress
(B) Compressive stress
(C) Bending stress
(D) Torsional shear stress

2. Wahl factor to account for direct shear stress and stress concentration due to curvature for helical springs is given by,
(A) (4C - 1/4C - 4) + 0.615/C
(B) (4C - 1/4C + 4) + 0.615/C
(C) (4C + 1/4C - 4) + 0.615/C
(D) (4C + 1/4C + 4) + 0.615/C

Where, C is spring index

3. The stiffness of spring is,

(A) Deflection per unit of axial force
(B) Force per unit cross-sectional area of spring
(C) Ratio of mean coil diameter to wire diameter
(D) Force required to produce unit deflection

4. Springs are used,
(A) To absorb shocks and vibrations
(B) To store and release energy
(C) To measure force
(D) For any of the above functions

5. The type of spring used to achieve any linear or non-linear load-deflection characteristic is
(A) Spiral spring
(B) Non-ferrous spring
(C) Belleville (coned disk) spring
(D) Torsion spring

6. The maximum shear stress in spring wire is induced at
(A) Inner surface of the coil
(B) Outer surface of the coil
(C) Central surface of the coil
(D) End coils

7. The type of spring used to absorb shocks and vibrations in vehicles is,
(A) Helical extension spring
(B) Multi-leaf spring
(C) Spiral spring
(D) Belleville (coned disk) spring

8. Two springs of stiffness k1 and k2 are connected in parallel, the combined stiffness of the connection is given by,
(A) k1k2/k1 + k2
(B) k1k2/k1 - k2
(C) k1 + k2
(D) k1 + k2/k1k2

9. The ends of spring, which are in contact with the seat, are
(A) Active coils
(B) Inactive coils
(C) Transmit maximum force
(D) Do not transmit any force

10. The type of spring used in door hinges is,
(A) Helical extension spring
(B) Multi-leaf spring
(C) Spiral spring
(D) Helical torsion spring

11. When the helical compression spring is subjected to axial compressive force, the type of stress induced in the spring wire is,
(A) Tensile stress
(B) Compressive stress
(C) Bending stress
(D) Torsional shear stress

12. When a helical spring is cut into two halves, the stiffness of each half spring will be,
(A) Same as original spring
(B) Double of original spring
(C) Half of original spring
(D) One fourth of original spring

13. The type of spring used to measure weights in spring balance is,
(A) Helical extension spring
(B) Multi-leaf spring
(C) Spiral spring
(D) Helical torsion spring

14. Concentric springs are used,
(A) To achieve greater load carrying capacity with given space
(B) To achieve fail-safe system
(C) To eliminate surge
(D) Any of the above objectives

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