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Following data is provided for a 360o hydrodynamic bearing :
Radial load = 3.2 kN
journal Speed =1490 rpm
journal diameter = 50 mm
bearing length = 50 mm
radial clearance = 0.05 mm
viscosity of lubricant = 25 cP
Considering that the total heat generated in the bearing is taken by the total oil flow in the bearing, determine :
(i) the coefficient of friction
(ii) Power lost in friction
(iii) Minimum oil film thickness
Compare solid shaft with the hollow: Compare solid shaft with the hollow shaft, by strength and their weight. Sol.: ( a ) Comparison by strength: Assume that both the s
a)What are methods used in rating for time study. Illustrate them. b) Write down principles of motion economy.
Q. What are the basic use of Sand rammer? It is the apparatus of make specimens of moulding sand, for tests such as - permeable test, the various strength tests, and shatter te
Defrance between entrpy and enthalpy
what is strength of material?
Types Of Polymerisation When some of bifunctional molecules connect in a chain structure, the reaction is termed as addition polymerisation. However, these polymerizations do
In an engine working on Diesel cycle inlet pressure and tem are 1 bar and 17 o c respectively. Pressure at the end of adiabatic compression is 35 bar. He ratio of expansion i.e. af
A 16-bit A/D board is arranged to accept voltage signals ranging from -5V to +5V. The A/D board is used to monitor the output from the Wheatstone bridge shown below. The strain g
Volume fraction of fibres: The epoxy material is prepared to be stressed to its full strength. What must be volume fraction of fibres? Solution Here σ′ = 1200 MPa,
What does initial velocity mean?
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