# The equation d2x/dt2 + C.dx/dt + K.x = 0, represents

1.  Free vibrations

2.  Forced vibrations

3.  Periodically forced vibrations

4.  Free vibrations with viscous damping

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Free vibrations with viscous damping

Explanation :
No Explanation available for this question

# The equation m d2x/dt2 + C.dx/dt + K.x = F sin ωt, represents

1.  Free vibrations

2.  Forced vibrations

3.  Periodically forced vibrations

4.  Free vibrations with viscous damping

5.  Both (b) and (c)

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Both (b) and (c)

Explanation :
No Explanation available for this question

# For a vibrating system as the value ω/ωn increases above unity, the simplification factor, irrespective of value of damping factor has tendency to move towards

1.  Above unity

2.  Near unity

3.  Near infinity

4.   Near zero value

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Near zero value

Explanation :
No Explanation available for this question

# Critical damping is a function of

1.  Mass and stiffness

2.  Mass and damping co-efficient

3.  Stiffness and natural frequency

4.   Natural frequency and damping co-efficient

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Mass and stiffness

Explanation :
No Explanation available for this question

# The amplitude of under damping a small damping varies with time as

1.  Linearly

2.  Arithmetically

3.  Geometrically

4.  Exponentially

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Exponentially

Explanation :
No Explanation available for this question

# For critical damping which of the following condition will be satisfied

1.  (C/2m)2 > K/M

2.  (C/2m)2 = K/M

3.  (C/2m)2 < K/M

4.   None of these

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(C/2m)2 = K/M

Explanation :
No Explanation available for this question

# For critical damping, damping factor (τ) will be

1.  ξ > 1

2.  ξ < 1

3.  ξ = 1

4.  None of these

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ξ = 1

Explanation :
No Explanation available for this question

# For over damped system, damping factor will be

1.  τ > 1

2.  τ < 1

3.  τ = 1

4.  None of these

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τ > 1

Explanation :
No Explanation available for this question

# For under damping system, damping factor will be

1.  τ > 1

2.  τ < 1

3.  τ = 1

4.  None of these

4

τ < 1

Explanation :
No Explanation available for this question

1.  Constant

2.  Linear

3.  Logarithm

4.  Exponential

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