A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is%!

A shaft has two heavy rotors mounted on it. The transverse natural fre

1.	A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is%!
A.	5,367 r.p.m.
B.	6,000 r.p.m.
C.	9,360 r.p.m.
D.	12,000 r.p.m.
Answer» B. 6,000 r.p.m.

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A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is%!

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