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Test: Multi Leaf Spring


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10 Questions MCQ Test Design of Machine Elements | Test: Multi Leaf Spring

Test: Multi Leaf Spring for Mechanical Engineering 2022 is part of Design of Machine Elements preparation. The Test: Multi Leaf Spring questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Multi Leaf Spring MCQs are made for Mechanical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Multi Leaf Spring below.
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Test: Multi Leaf Spring - Question 1

Bending stress in graduated length leaves are more than that in full length leaves.

Detailed Solution for Test: Multi Leaf Spring - Question 1

Explanation: Bending stress in full length leaves is around 50% higher than graduated length leaves.

Test: Multi Leaf Spring - Question 2

Nip is the initial gap between extra full length leaf and the graduated length leaf before the assembly.

Detailed Solution for Test: Multi Leaf Spring - Question 2

Explanation: Nipping is done to balance the bending stress in the full length leaf and graduated length leaf.

Test: Multi Leaf Spring - Question 3

Nipping is defined as leaving the gap between full length leaf and graduated length leaf.

Detailed Solution for Test: Multi Leaf Spring - Question 3

Explanation: Nipping is pre stressing achieved by a difference in radii of curvature.

Test: Multi Leaf Spring - Question 4

A leaf spring consists of 3 extra full length leaves and 14 graduated length leaves. The maximum force that can act on the spring is 70kN and the distance between eyes of the spring is 1.2m. Width and thickness of the leaves are 100mm and 12mm respectively. If modulus of elasticity is 207000N/mm², calculate the initial nip.

Detailed Solution for Test: Multi Leaf Spring - Question 4

Explanation: C=2PLᵌ/Enbtᵌ where L=1.2/2, n=3+14,P=70/2.

Test: Multi Leaf Spring - Question 5

A leaf spring consists of 3 extra full length leaves and 14 graduated length leaves. The maximum force that can act on the spring is 70kN and the distance between eyes of the spring is 1.2m. Width and thickness of the leaves are 100mm and 12mm respectively. Calculate the initial pre load required to close the nip.

Detailed Solution for Test: Multi Leaf Spring - Question 5

Explanation: P=2x3x14x35000/17(3×3+2×14).

Test: Multi Leaf Spring - Question 6

Belleville spring can be used in clutch application.

Detailed Solution for Test: Multi Leaf Spring - Question 6

Explanation: When h/t=2.1, the Belleville spring can be used in clutches.

Test: Multi Leaf Spring - Question 7

Belleville spring can only produce linear load deflection characteristics.

Detailed Solution for Test: Multi Leaf Spring - Question 7

Explanation: Beliville spring can provide any linear or non-linear load deflection characteristics.

Test: Multi Leaf Spring - Question 8

When two Belleville sprigs are arranged in series, half deflection is obtained for same force.

Detailed Solution for Test: Multi Leaf Spring - Question 8

Explanation: Double deflection is obtained.

Test: Multi Leaf Spring - Question 9

When two Belleville springs are in parallel, half force is obtained for a given deflection.

Detailed Solution for Test: Multi Leaf Spring - Question 9

Explanation: Double force is obtained.

Test: Multi Leaf Spring - Question 10

 Propagation of fatigue failure is always due to compressive stresses.

Detailed Solution for Test: Multi Leaf Spring - Question 10

Explanation: Propagation is always due to tensile stresses.

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