The rate of decay of oscillations is known as.......
A. critical damping
B. damping coefficient
C. transmissibility
D. logarithmic decrement

1 Answer

Answer :

D. logarithmic decrement

Related questions

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as A Damping factor B Damping coefficient C Logarithmic decrement D Magnification factor

Last Answer : D Magnification factor

Description : The ratio of maximum displacement of the forced vibration to the deflection due to the static force, is known as A. Damping FactorB. Damping Coefficient C. Logarithmic Decrement D. Magnification Factor

Last Answer : D. Magnification Factor

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as a) Damping factor b) Damping coefficient c) Logarithmic decrement d) Magnification factor

Last Answer : d) Magnification factor

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force is known as (A) damping factor (B) damping coefficient (C) logarithmic decrement (D) magnification factor

Last Answer : (D) magnification factor

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as a) damping factor b) damping coefficient c) logarithmic decrement d) magnification factor

Last Answer : d) magnification factor

Description : The ratio of actual damping coefficient to the critical damping coefficient is known as A Magnification Factor B Damping Factor C Logarithmic decrementD None of the mentioned

Last Answer : B Damping Factor

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force is known as A Logarithmic decrement B Magnification factor C Damping factor D None of the mentioned

Last Answer : B Magnification factor

Description : When the torsional pendulum vibrating the observed amplitudes on the same side of neutral axis for successive cycles are found to decay 50% of the initial value determine logarithmic decrement. A 0.065 B 0.006 C 0.693 D 0.5

Last Answer : C 0.693

Description : When the torsional pendulum vibrating, the observed amplitudes on the same side of the neutral axis for successive cycles are found to decay 50% of the initial value determine logarithmic decrement. A 0.065 B 0.006 C 0.693 D 0.5

Last Answer : C 0.693

Description : Calculate logarithmic decrement if damping factor is 0.33. A 1.36 B 3.23 C 5.16D 2.19

Last Answer : D 2.19

Description : Calculate logarithmic decrement if damping factor is 0.086 A 0.245 B 0.425 C 0.542 D 0.252

Last Answer : C 0.542

Description : Calculate logarithmic decrement if damping factor is 0.33. D ( A ) 1.36 ( B ) 3.23 ( C ) 5.16 ( D ) 2.19

Last Answer : D ) 2.19

Description : Calculate logarithmic decrement if damping factor is 0.33. a. 1.36 b. 3.23 c. 5.16 d. 2.19

Last Answer : d. 2.19

Description : find the value of logarithmic decrement of a vibratory system if its natural frequency is 10rad/sec, its mass is 10kg and its damping constant is 100N.s/m a) 36.27 b)362.7 c)0.3627 d)3.627

Last Answer : d)3.627

Description : The ratio of the actual damping coefficient (c) to the critical damping coefficient (cc ) is known as _________ A Damping factor B Damping coefficient C Resistive factor D Resistive coefficient

Last Answer : A Damping factor

Description : The ratio of the actual damping coefficient (c) to the critical damping coefficient (cc ) is known as _________ ( A ) Damping factor ( B ) Damping coefficient ( C ) Resistive factor ( D ) Resistive coefficient

Last Answer : ( A ) Damping factor

Description : The ratio of the actual damping coefficient (c) to the critical damping coefficient (cc ) is known as _________ a) Damping factor b) Damping coefficient c) Resistive factor d) Resistive coefficient

Last Answer : a) Damping factor

Description : In under damped vibrating system, if x 1 and x 2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to A x 1 /x 2 B log (x 1 /x 2 ) C loge (x 1 /x 2 ) D log (x 1 .x 2 )

Last Answer : C loge (x 1 /x 2 )

Description : Calculate logarithmic decrement if the amplitude of the vibrating body reduces to half in two cycles A 0.346 B 0.693 C 0.301 D 0.150

Last Answer : A 0.346

Description : In under damped vibrating system, if x 1 and x 2 are the successive values of the C amplitude on the same side of the mean position, then the logarithmic decrement is equal to ( A ) x 1 /x 2 ( B ) log (x 1 /x 2 ) ( C ) loge (x 1 /x 2 ) ( D ) log (x 1 .x 2 )

Last Answer : ( C ) loge (x 1 /x 2 )

Description : Determine logarithmic decrement, if the amplitude of a vibrating body reduces to 1/6 th in tw cycles. a. 0.223 b. 0.8958 c. 0.3890 d. None of the above

Last Answer : b. 0.8958

Description : In under damped vibrating system, if x1 and x2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to a) x1/x2 b) log (x1/x2) c) ln (x1/x2) d) log (x1.x2)

Last Answer : c) ln (x1/x2)

Description : Logarithmic decrement is defined as the ____________ of the amplitude reduction factor. (A) reciprocal (B) logarithm (C) natural logarithm (D) all of the above

Last Answer : (C) natural logarithm

Description : In under damped vibrating system, if x 1 and x 2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to a) x 1 /x 2 b) log (x 1 /x 2 )c) loge (x 1 /x 2 ) d) log (x 1 .x 2 )

Last Answer : b) log (x 1 /x 2 )

Description : In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be A less than unity B equal to unity C greater than unity D zero

Last Answer : C greater than unity

Description : In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ω/ωn is A. Equal to 1 B. Equal to √2 C. Less than √2 D. Greater than √2

Last Answer : B. Equal to √2

Description : Negative damping leads to a. instability b. fast convergence c. oscillationsNegative damping leads to a. instability b. fast convergence c. oscillations

Last Answer : a. instability

Description : In vibration isolation system, if ω/ω n < 2, then for all values of damping factor, the transmissibility will be a) less than unity b) equal to unity c) greater than unity d) zero

Last Answer : c) greater than unity

Description : In vibration isolation system, if ω/ω n < 2, then for all values of damping factor, the transmissibility will be a) less than unity b) equal to unity c) greater than unity d) zero

Last Answer : c) greater than unity

Description : n vibration isolation system, if ω/ω n is less than √2 , then for all values of the damping factor, the transmissibility will be a) less than unity b) equal to unity c) greater than unity d) zero

Last Answer : c) greater than unity

Description : What is meant by critical damping coefficient? * 1 point (A) Frequency of damped free vibrations is less than zero (B). The motion is a periodic in nature (C). Both a. and b. (D). None of the above

Last Answer : (C). Both a. and b.

Description : What is meant by critical damping coefficient? A Frequency of damped free vibrations is less than zero B The motion is aperiodic in nature C Both a. and b. D None of the above

Last Answer : B The motion is aperiodic in nature

Description : Calculate the value of critical damping coefficient if a vibrating system has mass of 4kg and stiffness of 100N/m A 20 N-sec/m B 40 N-sec/m C 60 N-sec/m D 80 N-sec/m

Last Answer : B 40 N-sec/m

Description : Ratio of actual damping coefficient to critical damping coefficient is called A. Damping Factor B. Angular Factor C. Critical Factor D. None of above

Last Answer : A. Damping Factor

Description : Calculate damped natural frequency, if a spring mass damper system is subjected to periodic disturbing force of 30 N. Damping coefficient is equal to 0.76 times of critical damping coefficient and undamped natural frequency is 5 rad/sec A. 3.99 rad/sec B. 2.13 rad/sec C. 4.12 rad/sec D. 3.24 rad/sec

Last Answer : D. 3.24 rad/sec

Description : What is meant by critical damping coefficient? B ( A )Frequency of damped free vibrations is less than zero ( B )The motion is aperiodic in nature ( C )Both a. and b. (D)None of the above

Last Answer : ( B )The motion is aperiodic in nature

Description : What is meant by critical damping coefficient? a. Frequency of damped free vibrations is less than zero b. The motion is aperiodic in nature c. Both a. and b. d. None of the above

Last Answer : b. The motion is aperiodic in nature

Description : Calculate critical damping coefficient in N/m/s from the following data: mass = 100Kg ω = 40rad/s a) 25,132 b) 26,132 c) 27,132 d) 28,132

Last Answer : a) 25,132

Description : Calculate critical damping coefficient in Ns/m from the following data. mass = 200Kg ω = 20rad/sa) 25,132 b) 26,132 c) 27,132 d) Not possible

Last Answer : d) Not possible

Description : In steady state forced vibrations, the amplitude of vibrations at resonance is _____________ damping coefficient. A equal to B directly proportional to C inversely proportional to D independent of

Last Answer : C inversely proportional to

Description : Determine the viscous damping coefficient if damper offers resistance 0.05N at constant velocity 0.04m/sec A 0.8N-sec/m B 1.5N-sec/m C 2.5N-sec/m D 1.25N-sec/m

Last Answer : D 1.25N-sec/m

Description : The unit of the viscous damping coefficient is A N-m/sec B m/N-sec C N-sec-m D N-sec/m

Last Answer : D N-sec/m

Description : Calculate damping ratio if mass = 200Kg, ω = 20rad/s and damping coefficient = 800 N/m/s A. 0.03 B. 0.04 C. 0.05 D. 0.06

Last Answer : A. 0.03

Description : In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient. A. Equal to B. Directly proportional to C. Inversely proportional toD. Independent of

Last Answer : C. Inversely proportional to

Description : The equivalent viscous damping coefficient Ceq for coulomb damping is given by A) 4F/πωx B) 4πF/ωx C) πωx/4F D) ωx/4Πf

Last Answer : A) 4F/πωx

Description : In the case of steady state forced vibration at a resonance, the amplitude of vibration is A) Inversely proportional to damping coefficient B) Inversely proportional to damping ratio C) Inversely proportional to resonant frequency D) Directly proportional to resonant frequency

Last Answer : B) Inversely proportional to damping ratio

Description : A rotary system has a damping coefficient of 40 N-m-sec/rad. The damping torque at a velocity of 2 rad/s, will be A) 20 N-m B) 40 N-m C) 80 N-m D) 100 N-m

Last Answer : C) 80 N-m

Description : The units of viscous damping coefficient is A) N-m/sec B) m/N-sec C) N-sec/m D) N-m-sec

Last Answer : C) N-sec/m

Description : n steady state forced vibrations, the amplitude of vibrations at resonance is _____________ damping coefficient. a) equal to b) directly proportional to c) inversely proportional to d) independent of

Last Answer : c) inversely proportional to