Question

This qustion in the yellow is multy choices about theory of machines  i need the solution in about 45 min

One of this points causes unbalance in rotating parts is 2 points torsion peak load inaccuracies in the casting high speed When the two centerlines (rotating, and geometric of rotating body) are coincident, then the rotor will be in a state of 2 points stable balance moderate unstable Balancing is the technique of correcting or eliminating unwanted inertia forces or moments in rotating or reciprocating masses and is achieved by changing 2 points position of the mass centers. the forces that act on the body. the material of the rotor. The speed of rotating masses. In balancing process, the involved in acceleration of the different moving partsbalance each other 2 points masses velocities forces couples Ves small mass that excited in the manufacturing the balance at high speed 2 points does affect maintains controls does not affect 509 (0) ENG 09:07 Foto/v/r.

Answer 1

BD © Inaccuracies in the casting. Results non- uniform distribution of man which eventually Causes unbalance. uniformly Q.2) Balanced state. Q.3) @ position of Mass Center a 4 © forces. The different forces involved in acceleration of ouifferent movable posts balances each other. Q.5) Does affect, say, a very small mass'm' is non- distributed. At higher speeds (targential speed v). Centrifugal face acting see at higher speed the magnitude of unbalanced faces increase Velooily rapidly (square of 9.66 The resultant forces ord Couples acting on the System due to vanous Reada masses gero. p@ Needs balorcing in the same plane, Q0 @ Add one (1) Bolonced mass exactly equal to the mass, so that not forcer and couples = my we ४ should be 0 becomes yeso

Qg) a) put one balanced man that have resultant of unbalanced equivalent face mass.