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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