engineering recuitment HPCL Engineer Mock Test 2024 Mechanical Vibrations Undamped Free Vibration Resonance and Whirling
A shaft has two rotors mounted on it. The transverse natural frequency considering each rotor separately is 100 Hz and 200 Hz respectively. The lowest critical speed is
1
13000 rpm
2
5367 rpm
3
6450 rpm
4
9343 rpm