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SPRINGS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

SPRINGS MULTIPLE CHOICE

QUESTIONS (MCQ) WITH

 ANSWERS

Spring is an important part in almost every

machinery. These springs perform different

functions in different applications. These absorb

shocks in vehicles running on uneven roads.

These store energy in toys and circuit breakers.

These give cushion effect in sofas and cars.

Springs are of different types namely close

and open coiled helical springs, laminated

and spiral springs. MCQ on springs will increase

understanding and clarity about the springs.

Fig. Flat Spiral Spring

Fig. Semi-elliptical Spring

Fig. Closed Coiled Helical Spring under axial load & under axial couple

Fig. Open Coiled Helical Spring under axial load & axial couple

Q1. Design a spring for

(a) Higher strength
(b) Higher deflection
(c) Higher stiffness
(d) None
(Ans: b)

 

Q2. Design a carriage spring on the basis of

(a) Shear
(b) Compression
(c) Bending
(d) None
(Ans: c)

Q3. Design a closed helical spring under axial load on the basis of

(a) Shear
(b) Compression
(c) Bending
(d) None
(Ans: a)

Q4. Design a closed helical spring under axial torque on the basis of

(a) Shear
(b) Compression
(c) Bending
(d) None
(Ans: c)

Q5. Design an open helical spring under axial torque on the basis of

(a) Shear
(b) Compression
(c) Bending
(d) None
(Ans: d)

Q6. Spring index is

(a) D – d
(b) D/d
(c) D2 –d2
(d) None
(Ans: b)

Q7. Wahl’s stress concentration factor is

(a) (4C – 1)/ (4C – 3) + 0.615/C
(b) (4C – 1)/ (4C – 2) + 0.615/C
(c) (4C – 1)/ (4C – 4) + 0.615/C
(d) None
(Ans: c)

Q8. Resilience of spring is

(a) Strain energy per unit length
(b) Strain energy per unit area
(c) Strain energy per unit mass
(d) None
(Ans: d)

Q9. Wahl’s stress concentration factor accounts for

(a) Shear effect

(b) Bending effect

(c) Compression effect

(d) none

(Ans: b)

Q10. There are number of laminations in a

(a) Close coiled spring

(b) Open coiled spring

(c) Spiral spring

(d) None

(Ans: d)

Q11. Most important features of a spring 

(a) Deflection, stiffness and strength

(b) Stiffness, bending and shear strengths

(c) Strain energy, deflection and strength

(d) None

(Ans: c)

Q12. Value of  Wahl’s stress concentration factor is always 

(a) > 1

(b) = 1

(c) < 1

(d) None

(Ans: a)

Q13. The most common value of spring index lies between

(a) 0 and 5

(b) 5 and 10

(c) 10 and 15

(d) None

(Ans: b)

Q14. Use laminated springs in 

(a) Watches

(b) Sofas

(c) Motorcycles

(d) None

(Ans: d)

Q15. Use leaf springs in

(a) Scooters
(b) Bikes
(c) Trucks
(d) None
(Ans: c)

Q16. Leaf springs use

(a) All full length leaves
(b) All leaves of different lengths
(c) Few full length leaves with truncated leaves
(d) None
ANS: ( c)

Q17. Design leaf springs on the basis of

(a) Maximum bending stresses
(b) Maximum deflection
(c) Maximum bending & maximum deflection
(d) None
(Ans: c)

Q18. Maximum bending stress in a leaf spring is

(a) 3WL/4nbt2
(b) 3WL/8nbt2
(c) 3WL/2nbt2
(d) None
(Ans: c)

Q19. Maximum deflection in a leaf spring is

 
(a) 3WL3/4Enbt3
(b) 3WL3/8Enbt3
(c) 3WL3/16Enbt3
(d) None
(Ans: b)

Q20. Overlap in a leaf spring is

(a) L/n
(b) L/2n
(c) L/3n
(d) None
(Ans: b)

Q21. Strain energy in a leaf spring is

(a) W x δ
(b) W x δ/3
(c) W x δ/2
(d) None
(Ans: c)

Q22. Angle of helix in a close coiled spring is

(a) < 100
(b) >100
(c) =100
(d) None
(Ans: a)

Q23. A close coiled spring under axial load produces

(a) Bending stresses
(b) Shear stresses
(c) Tensile stresses
(d) None
(Ans: b)

Q24. Deflection in a spring should be

(a) Large
(b) Medium
(c) Small
(d) None
(ANs: a)

Q25. Spring is an

(a) Elastic device
(b) Plastic device
(c) Elastic & plastic device
(d) None
(Ans: a)

Q26. Shear stress in a close coiled helical spring is

(a) 16WD/π d3
(b) 32WD/π d3
(c) 8WD/π d3
(d) None
(Ans: c)

Q27. Deflection in a close coiled helical spring is

(a) 16 WR3n/Gd4
(b) 32 WR3n/Gd4
(c) 64 WR3n/Gd4
(d) None
(Ans: c)

Q28. Strain energy in a close coiled helical spring is

(a) τ2/8G
(b) τ2/16G
(c) τ2/4G
(d) None
(Ans: c)

Q29. Strain energy in a spring should be

(a) Large
(b) Small
(c) Zero
(d) None
(Ans: a)

Q30. Deflection in a spring should be

(a) Large
(b) Small
(c) Zero
(d) None
(Ans: a)

https://www.mesubjects.net/wp-admin/post.php?post=7618&action=edit      Close coiled under axial force

https://www.mesubjects.net/wp-admin/post.php?post=7620&action=edit         Open coiled helical spring-axial load

https://www.mesubjects.net/wp-admin/post.php?post=7644&action=edit          Laminated springs

https://www.mesubjects.net/wp-admin/post.php?post=7602&action=edit           Salient features of springs

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