Which of the following relations is true for viscous damping?
A) Force α relative displacement
B) Force α relative velocity
C) Force α (1 / relative velocity)
D) None of the above

1 Answer

Answer :

B) Force α relative velocity

Related questions

Description : Which of the following relations is true for viscous damping? a. Force α relative displacement b. Force α relative velocity c. Force α (1 / relative velocity) d. None of the above

Last Answer : b. Force α relative velocity

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 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 Logarithmic decrement B Magnification factor C Damping factor D None of the mentioned

Last Answer : B 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 : Which of the following statements is/are true for coulomb damping? 1. Coulomb damping occurs due to friction between two lubricated surfaces2. Damping force is opposite to the direction of motion of vibrating body ... 2, 3 and statement 4 c. Only statement 2 d. All the above statements are true

Last Answer : c. Only statement 2

Description : A simple pendulum is found to vibrate at a frequency of 0.5Hz in vacuum and0.45 Hz in a viscous fluid medium. Find the damping factor. 0.5122 (B) 0.9272 (C) 0.4359 (D) 0.2568

Last Answer : (C) 0.4359

Description : Eddy current damping is an example of _____ A Coulomb damping B Hysteresis damping C Viscous damping D Dry friction damping

Last Answer : C Viscous damping

Description : A simple pendulum is found to vibrate at a frequency of 0.5Hz in vacuum and 0.45Hz in a viscous fluid medium. Find the damping factor. A 0.5122 B 0.9237 C 0.4359 D 0.2568

Last Answer : C 0.4359

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 : The equation of motion for a vibrating system with viscous damping is d 2 x/dt 2 + c/m X dx/dt + s/m X x = 0 If the roots of this equation are real, then the system will be A. over damped B. under damped C. critically damped D. none of the mentioned

Last Answer : A. over damped

Description : When parts of a vibrating system slide on a dry surface, the damping is A. Viscous. B. Coulomb C. Structural D. Eddy current

Last Answer : B. Coulomb

Description : Eddy current damping is an example of _____A. Coulomb damping B. Hysteresis damping C. Viscous damping D. Dry friction damping

Last Answer : C. Viscous damping

Description : Eddy current damping is an example of _____ A) Coulomb damping B) Hysteresis damping C) Viscous damping D) Dry friction damping

Last Answer : C) Viscous damping

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 case of viscous damping the frequency of damped vibration is A) Equal to that of undamped vibrations B) Less than that of undamped vibrations C) Greater than that of undamped vibrations D) Independent than that of undamped vibrations

Last Answer : B) Less than that of undamped vibrations

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 : Following are the types of damping A. Viscous Damping B. Coulomb Damping C. Hysteresis Damping D. All the above

Last Answer : D. All the above

Description : Eddy current damping is an example of _____ a. Coulomb damping b. Hysteresis damping c. Viscous damping d. Dry friction damping

Last Answer : c. Viscous damping

Description : When a system vibrates in a fluid medium, the damping is (a) viscous (b) Coulomb (c) solid

Last Answer : (a) viscous

Description : Fluid resistance causes damping which is known as ______ a) Resistance damping b) Fluid dampingc) Viscous damping d) Liquid damping

Last Answer : c) Viscous damping

Description : The equation of motion for a vibrating system with viscous damping is d 2 x/dt 2 + c/m X dx/dt + k/m X x = 0 If the roots of this equation are real, then the system will be a) over damped b) under damped c) critically damped d) none of the mentioned Ans:a

Last Answer : a) over damped

Description : The damping factor is the measure of the relative amount of damping in the existing system with that necessary for the ______ system. (A) underdamped (B) overdamped (C) critical damped (D) all of the above

Last Answer : (C) critical damped

Description : Which of the following is true regarding Ɛ>1? A. Transmitted force is greater than applied force B. Transmitted force is less than applied force C. Spring force is less than applied force D. Damping force is less than applied force

Last Answer : A. Transmitted force is greater than applied force

Description : Which of the following is true regarding Ɛ>1? a) Transmitted force is greater than applied force b) Transmitted force is less than applied force c) Spring force is less than applied force d) Damping force is less than applied forc

Last Answer : a) Transmitted force is greater than applied force

Description : Maximum displacement due to forced vibration is dependent on deflection due to static force. a) True b) False

Last Answer : a) True

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 vibration in a vehicle is normally expressed in the terms of the ______________. (A) displacement (B) velocity (C) acceleration (D) none of the above

Last Answer : (C) acceleration

Description : A seismometer is a device used to measure the ___________ of a vibrating body. (A) displacement (B) velocity (C) acceleration (D) all of the above

Last Answer : (A) displacement

Description : The velocity vector in a vector diagram for a harmonic motion A Lags the displacement vector by 180 0 B Lags the displacement vector by 90 0 C Leads the displacement vector by 90 0 D Leads the displacement vector by 180 0

Last Answer : C Leads the displacement vector by 90 0

Description : The velocity vector in a vector diagram for a harmonic motion A Lags the displacement vector by 180 0 B Lags the displacement vector by 90 0 C Leads the displacement vector by 90 0 D Leads the displacement vector by 180 0

Last Answer : C Leads the displacement vector by 90 0

Description : The velocity vector in a vector diagram for a harmonic motion A) Lags the displacement vector by 180° B) Leads the displacement vector by 90° C) Lags the displacement vector by 90° D) Leads the displacement vector by 180°

Last Answer : B) Leads the displacement vector by 90°

Description : The velocity vector in a vector diagram for a harmonic motion C (A) Lags the displacement vector by 180 0 (B) Lags the displacement vector by 90 0 (C) Leads the displacement vector by 90 0 (D) Leads the displacement vector by 180 0

Last Answer : (C) Leads the displacement vector by 90 0

Description : A seismometer is a device used to measure the ___________ of a vibrating body. (A) displacement (B) velocity (C) acceleration (D) all of the above

Last Answer : (A) displacement

Description : The instruments which are used to measure the ___________ of a vibrating body are called vibration measuring instrument. (A) displacement (B) velocity (C) acceleration (D) all of the above

Last Answer : (D) all of the above

Description : Which of the following is a type of transmitted force to the foundation? (A) Damping force (B) Undamping force (C) Tensile force (D) Torsional force

Last Answer : (A) Damping force

Description : In a spring-mass system, which of the following force is not considered? A Spring force B Damping force C Accelerating force D A and B

Last Answer : B Damping force

Description : The angle between spring force and damping force is A 180 0 B 120 0 C 90 0 D 0 0

Last Answer : C 90 0

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 : In a spring-mass system, which of the following force is not considered? B ( A ) Spring force ( B ) Damping force ( C ) Accelerating force ( D ) A and B

Last Answer : B ) Damping force

Description : The angle between spring force and damping force is A. 180 0 B. 90 0 C. 0 0 D. None of the above

Last Answer : B. 90 0

Description : The damping is used to control the __________ of body. A. Force B. Viscosity C. Motion D. None

Last Answer : C. Motion

Description : Reduction in vibration amplitude after one complete cycle of single degree free vibration with dry friction damping is_____, if where F"= frictional force between mass and surface and k =stiffness of the system. a)4F/k a b) 2f/K C) 3F/k D)8F/k

Last Answer : a)4F/k

Description : Which of the following is a type of transmitted force to the foundation? (A) Damping force (B) Undamping force (C) Tensile force (D) Torsional force

Last Answer : (A) Damping force

Description : Which of the following is a type of transmitted force to the foundation? a) Damping force b) Undamping force c) Tensile force d) Torsional force

Last Answer : a) Damping force

Description : In which direction does the damping force acts? a) Opposite to the motion b) Along the motion c) Perpendicular to motion d) Variable

Last Answer : a) Opposite to the motion