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Machine Design Practice Test: Cylinders and Pressure Vessels and Design of IC Engine Components
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Cylinders and Pressure Vessels and Design of IC Engine Components topics include: Compound cylinder, pressure vessels, gaskets and IC engine component design. Here are some components of an internal combustion (IC) engine: Crankshaft: A long, complex-shaped rod that converts the piston's reciprocating motion into rotary motion. Connecting rod: Connects the piston to the crankshaft, transferring force and translating the piston's reciprocating motion into the crankshaft's circular motion. Piston: A moving component contained by a cylinder, with piston rings that make it gas-tight. The... Show more
Machine Design Practice Test: Cylinders and Pressure Vessels and Design of IC Engine Components
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25 Questions

1. A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the radial stresses due to shrink shift in jacket.
2. Lame’s equation is generally used for ductile materials.
3. Longitudinal stress in a cylinder is given by [symbols have their usual meanings].
4. Autogreggate is a process of ___ stressing the cylinder.
5. The piston rod of a hydraulic cylinder exerts an operating force of 10kN. The allowable stress in the cylinder is 45N/mm². Calculate the thickness of the cylinder using Lame’s equation. Diameter of the cylinder is 40mm and pressure in cylinder is 10MPa.
6. If diameter of cylinder bore is 120mm, then thickness of dry liner will be
7. A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the length of the cylinder if it is twice the diameter of the cylinder.
8. The circumferential hoop stress and longitudinal stress act in same direction and hence are straight away added.
9. Asbestos gaskets like other non-metallic gaskets can be used only up to a temperature of 70⁰C.
10. Can we pre-stress the cylinder by subjecting cylindrical portion near inner diameter in plastic range and outer diameter is still in the elastic range.
11. The circumferential hoop stress and longitudinal stress are both shear stress.
12. A cylinder is considered thin when the ratio of inner diameter to wall thickness is more than 5.
13. Compression Ratio in diesel engine is lesser than that in Spark Ignition engine.
14. A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the tangential stress due to shrink shift in inner tube.
15. If nominal diameter of bolt used is 20mm, then find the radial distance between outer diameter of flange and pitch circle diameter of studs.
16. Petrol engine are more economical than diesel engine.
17. A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the tangential stresses due to shrink shift in jacket.
18. A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the radial stress due to shrink shift in inner tube.
19. There are ____ types of liners.
20. Tangential stress in a cylinder is given by [symbols have their usual meanings].
21. Cylinder having inner diameter to wall thickness ratio less than 15 are
22. If diameter of cylinder of bore is 120mm, then thickness of the cylinder will be
23. A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the interference [E=210kN/mm²].
24. If diameter of cylinder bore is 120mm, then thickness of water jacket wall will be
25. A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². In service the cylinder is further subjected to an internal pressure of 25MPa. Calculate the tangential stress in compound cylinder.