2021 Mechanics of Vibration(东南大学)1463463447 最新满分章节测试答案
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本课程起止时间为:2021-03-15到2021-06-30
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Chapter 2： Free Vibration of Single-Degree-of-Freedom Quiz one
1、 问题:Stiffness increases when the natural frequency (); The mass increases when the natural frequency ().
选项：
A:increase increase
B:decrease increase
C:increase decrease
D:decrease decrease
答案: 【decrease increase】
2、 问题:The theoretical basis of using energy method to find the natural frequency of the system is ().
选项：
A:Theorem of moment of momentum
B:The kinetic energy theorem
C:Law of conservation of mechanical energy
D:The momentum theorem
答案: 【Law of conservation of mechanical energy】
3、 问题:For the following free vibration system, which one decays the fastest ().
选项：
A:Undamped system
B:Underdamped system
C:Critical damping system
D:Overdamped system
答案: 【Critical damping system】
4、 问题:The amplitude of an undamped system varies with time. ()
选项：
A:正确
B:错误
答案: 【正确】
5、 问题:The maximum acceleration of the simplified harmonic vibration of a spring mass system is a, and the natural frequency of the system is ω. What is the maximum velocity of the system ? ()
答案: 【a/ω】
Chapter 3： Harmonically Excited Vibration of SDOF systems Quiz two
1、 问题:The response of an undamped system under resonance will be () ?
选项：
A:very large
B:infinity
C:zero
D:very small
答案: 【infinity】
2、 问题:The frequency of beating is () ?
选项：
A:ωn-ω
B:ωn
C:ω
D:2ωn
答案: 【ωn-ω】
3、 问题:The complex frequency response, H(iω), is defined by () ?
选项：
A:X/F0
B:kX/F0
C:XF0
D:F0/kX
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