Automobile Design important questionsMost repeated in SPPU papers
These 11 questions appeared in more than one SPPU Automobile Design paper we have: 3 papers, from Nov 2024 to Nov 2025. The most-asked come first. Each one links to the papers it was asked in.
Repeated questions
Endsem questions (11)
- 3×asked
A semi-elliptic leaf spring used for automobile suspension consists of three extra full- length leaves and 15 graduated-length leaves, including the master leaf. The centre-to- centre distance between two eyes of the spring is 1 m. The maximum force that can act on the spring is 75 kN. For each leaf, the ratio of width to thickness is 9:1. The modulus of elasticity of the leaf material is 207000 N/mm 2 . The leaves are pre-stressed in such a way that when the force is maximum, the stresses induced in all leaves are same and equal to 450 N/mm 2 . Determine (i) the width and thickness of the leaves; (ii) the initial nip; and (iii) the initial pre-load required to close the gap C between extra fulllength leaves and graduated-length leaves.
- 3×asked
- 2×asked
- 2×asked
A propeller shaft is required to transmit 45 kW power at 500 rpm. It is a hollow shaft, having an inside diameter 0.6 times of outside diameter. It is made of plain carbon steel and the permissible shear stress is 84 N/mm 2 . Calculate the inside and outside diameters of the shaft.
- 2×asked
- 2×asked
- 2×asked
- 2×asked
- 2×asked
- 2×asked
- 2×asked
Questions count as repeated when their wording matches closely across papers. Numericals that depend on a figure are left out, since the figure changes from paper to paper.