The system governed by the equation stable if 14 a. k is positive b. c and k are positive is dynamically c. c is positive

The system governed by the equation
stable if
14
a. k is positive
b. c and k are positive
is dynamically
c. c is positive
by

1 Answer

Answer :

b. c and k are positive
by

Related questions

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

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

Which among the following is the fundamental equation of S.H.M.? A. x + (k / m) x =0 B. x + ω 2 x =0 C. x + (k/ m) 2 x =0 D. x 2 + ωx 2 =0

Description : Which among the following is the fundamental equation of S.H.M.? A. x + (k / m) x =0 B. x + ω 2 x =0 C. x + (k/ m) 2 x =0 D. x 2 + ωx 2 =0

Last Answer : B. x + ω 2 x =0

Which among the following is the fundamental equation of S.H.M.? A) x + (k / m) x =0 B) x + ω 2 x =0 C) x + (k/ m) 2 x =0 D) x 2 + ωx 2 =0

Description : Which among the following is the fundamental equation of S.H.M.? A) x + (k / m) x =0 B) x + ω 2 x =0 C) x + (k/ m) 2 x =0 D) x 2 + ωx 2 =0

Last Answer : B) x + ω 2 x =0

Which among the following is the fundamental equation of S.H.M.? a. x + (k / m) x =0 b. x + ω2x =0 c. x + (k/ m)2 x =0 d. x2 + ωx2 =0

Description : Which among the following is the fundamental equation of S.H.M.? a. x + (k / m) x =0 b. x + ω2x =0 c. x + (k/ m)2 x =0 d. x2 + ωx2 =0

Last Answer : b. x + ω2x =0

Which among the following is the fundamental equation of S.H.M.? a. x+(k/m)x=0 b. x+ω 2 x=0 c. x+(k/m) 2 x=0 d. x 2 + ωx 2 =0

Description : Which among the following is the fundamental equation of S.H.M.? a. x+(k/m)x=0 b. x+ω 2 x=0 c. x+(k/m) 2 x=0 d. x 2 + ωx 2 =0

Last Answer : d. x 2 + ωx 2 =0

Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots. A 25.62 rad/sec B 20.78 rad/sec C 14.4 rad/sec D 15.33 rad/sec

Description : Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots. A 25.62 rad/sec B 20.78 rad/sec C 14.4 rad/sec D 15.33 rad/sec

Last Answer : A 25.62 rad/sec

A system has a mass of 0.5 kg and spring stiffness of 2452 N/m. Find the natural frequency of the system. A. 5.14 Hz B. 9.14 Hz C. 11.14 Hz D. 28.14 Hz

Description : A system has a mass of 0.5 kg and spring stiffness of 2452 N/m. Find the natural frequency of the system. A. 5.14 Hz B. 9.14 Hz C. 11.14 Hz D. 28.14 Hz

Last Answer : C. 11.14 Hz

Calculate natural frequency of damped vibration, if damping factor is 0.52 and A natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots. ( A )25.62 rad/sec ( B )20.78 rad/sec ( C )14.4 rad/sec ( D )15.33 rad/sec

Description : Calculate natural frequency of damped vibration, if damping factor is 0.52 and A natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots. ( A )25.62 rad/sec ( B )20.78 rad/sec ( C )14.4 rad/sec ( D )15.33 rad/sec

Last Answer : ( A )25.62 rad/sec

Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequ the system is 30 rad/sec which consists of machine supported on springs and dashpots. a. 25.62 rad/secb. 20.78 rad/sec c. 14.4 rad/sec d. 15.33 rad/sec

Description : Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequ the system is 30 rad/sec which consists of machine supported on springs and dashpots. a. 25.62 rad/secb. 20.78 rad/sec c. 14.4 rad/sec d. 15.33 rad/sec

Last Answer : a. 25.62 rad/sec

A system has a mass of 0.5 kg and spring stiffness of 2452 N/m. Find the natural frequency of the system. (A) 5.14 Hz (B) 9.14 Hz (C) 11.14 Hz (D) 28.14 Hz

Description : A system has a mass of 0.5 kg and spring stiffness of 2452 N/m. Find the natural frequency of the system. (A) 5.14 Hz (B) 9.14 Hz (C) 11.14 Hz (D) 28.14 Hz

Last Answer : (C) 11.14 Hz

If the spring mass system with m and spring stiffness k is taken to very high altitude, the natural frequency of longitudinal vibrations * 1 point (A) increases (B) decreases (C) remain unchanged (D) may increase or decrease depending upon the value of the mass

Description : If the spring mass system with m and spring stiffness k is taken to very high altitude, the natural frequency of longitudinal vibrations * 1 point (A) increases (B) decreases (C) remain unchanged (D) may increase or decrease depending upon the value of the mass

Last Answer : (C) remain unchanged

A mass of 1 kg is attached to two identical springs each with stiffness k = 20 kN/m as shown in the figure. Under frictionless condition, the natural frequency of the system in Hz is close to * 1 point (A) 32 (B) 23 (C) 16 (D) 11

Description : A mass of 1 kg is attached to two identical springs each with stiffness k = 20 kN/m as shown in the figure. Under frictionless condition, the natural frequency of the system in Hz is close to * 1 point (A) 32 (B) 23 (C) 16 (D) 11

Last Answer : (A) 32

In a dynamic vibration absorber system, under tuned conditions which of the following relation holds good? A K 1 K 2 =M 1 M 2 B K 1 M 2 =M 1 K 2 C K 1 M 1 = K 2 M 2 D none of the mentioned

Description : In a dynamic vibration absorber system, under tuned conditions which of the following relation holds good? A K 1 K 2 =M 1 M 2 B K 1 M 2 =M 1 K 2 C K 1 M 1 = K 2 M 2 D none of the mentioned

Last Answer : B K 1 M 2 =M 1 K 2

In a spring mass system of mass m and stiffness k, the end of the spring are securely fixed and mass is attached to intermediate point of spring. The natural frequency of longitudinal vibration of the system A) Is maximum when mass is attached to mid point of the spring B) Is minimum when mass is attached to mid point of the spring C) Decreases as the distance from the top end where mass is attached decreases D) Decreases as the distance from the bottom end where mass is attached decreases

Description : In a spring mass system of mass m and stiffness k, the end of the spring are securely fixed and mass is attached to intermediate point of spring. The natural frequency of longitudinal ... is attached decreases D) Decreases as the distance from the bottom end where mass is attached decreases

Last Answer : B) Is minimum when mass is attached to mid point of the spring

If the spring mass system with m and spring stiffness k is taken to very high altitude , the natural frequency of longitudinal vibrations A) Increases B) Decreases C) Remain unchanged D) May be increase or decrease depending upon the value of the mass

Description : If the spring mass system with m and spring stiffness k is taken to very high altitude , the natural frequency of longitudinal vibrations A) Increases B) Decreases C) Remain unchanged D) May be increase or decrease depending upon the value of the mass

Last Answer : C) Remain unchanged

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

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

According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the differential equation for damped free vibrations having single degree of freedom. What will be the solution to this differential equation if the system is critically damped? A x = (A + Bt) e – ωt B x = X e – ξωt (sin ω d t + Φ) C x = (A – Bt) e – ωt D x = X e – ξωt (cos ω d t + Φ)

Description : According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the differential equation for damped free vibrations having single degree of freedom. What will be the solution to this differential equation if the system is ... Φ) C x = (A - Bt) e - ωt D x = X e - ξωt (cos ω d t + Φ)

Last Answer : A x = (A + Bt) e – ωt

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

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

According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the differential equation for damped free vibrations having single degree of freedom. What will be the solution to this differential equation if the system is critically damped? A. x = (A + Bt) e – ωt B. x = X e – ξωt (sin ω d t + Φ) C. x = (A – Bt) e – ωt D. x = X e – ξωt (cos ω d t + Φ

Description : According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the differential equation for damped free vibrations having single degree of freedom. What will be the solution to this differential equation if the system is ... ) C. x = (A - Bt) e - ωt D. x = X e - ξωt (cos ω d t + Φ

Last Answer : A. x = (A + Bt) e – ωt

According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the A differential equation for damped free vibrations having single degree of freedom. What will be the solution to this differential equation if the system is critically damped? ( A ) x = (A + Bt) e – ωt (B)x = X e – ξωt (sin ω d t + Φ) (C)x = (A – Bt) e – ωt ( D )x = X e – ξωt (cos ω d t + Φ

Description : According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the A differential equation for damped free vibrations having single degree of freedom. What will be the solution to this differential equation if the system is ... (C)x = (A - Bt) e - ωt ( D )x = X e - ξωt (cos ω d t + Φ

Last Answer : ( A ) x = (A + Bt) e – ωt

The equation of motion for spring mass system includes A. Inertia Force B. Spring Force C. Both D. Gravitational force

Description : The equation of motion for spring mass system includes A. Inertia Force B. Spring Force C. Both D. Gravitational force

Last Answer : C. Both

According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the differential equati damped free vibrations having single degree of freedom. What will be the solution to this differ equation if the system is critically damped? a. x = (A + Bt) e – ωt b. x = X e – ξωt (sin ω d t + Φ) c. x = (A – Bt) e – ωt d. x = X e – ξωt (cos ω d t + Φ)

Description : According to D' Alembert's principle, m (d 2 x/ dt 2 ) + c (dx/dt) + Kx =0 is the differential equati damped free vibrations having single degree of freedom. What will be the solution to this differ equation if the system is critically ... c. x = (A - Bt) e - ωt d. x = X e - ξωt (cos ω d t + Φ)

Last Answer : a. x = (A + Bt) e – ωt

In above numerical what will be the frequency corresponding to the peak amplitude A 14.18rad/sec B 24.13rad/sec C 20.22rad/sec D 22.32rad/sec

Description : In above numerical what will be the frequency corresponding to the peak amplitude A 14.18rad/sec B 24.13rad/sec C 20.22rad/sec D 22.32rad/sec

Last Answer : A 14.18rad/sec

f the mass is of 10 Kg, find the natural frequency in Hz of the free longitudinal vibrations. The displacement is 0.01mm. a) 44.14 b) 49.85 c) 43.43 d) 46.34

Description : f the mass is of 10 Kg, find the natural frequency in Hz of the free longitudinal vibrations. The displacement is 0.01mm. a) 44.14 b) 49.85 c) 43.43 d) 46.34

Last Answer : b) 49.85

Find the natural frequency in Hz of the free longitudinal vibrations if the displacement is 2mm. a) 11.14 b) 12.38 c) 11.43 d) 11.34

Description : Find the natural frequency in Hz of the free longitudinal vibrations if the displacement is 2mm. a) 11.14 b) 12.38 c) 11.43 d) 11.34

Last Answer : a) 11.14

Which of the following is true about Stiffness matrix a. Diagonal matrix b. Symmetric matrix c. Positive Definite d. All of the above

Description : Which of the following is true about Stiffness matrix a. Diagonal matrix b. Symmetric matrix c. Positive Definite d. All of the above

Last Answer : d. All of the above

Which of the following relations is true when springs are connected series. A K e = K 1 + K 2 B (1 / K e ) = (1/K 1 ) + (1/ K 2 ) C K e = (1/K 1 ) + (1/ K 2 ) D (1 / K e ) = K 1 + K 2

Description : Which of the following relations is true when springs are connected series. A K e = K 1 + K 2 B (1 / K e ) = (1/K 1 ) + (1/ K 2 ) C K e = (1/K 1 ) + (1/ K 2 ) D (1 / K e ) = K 1 + K 2

Last Answer : B (1 / K e ) = (1/K 1 ) + (1/ K 2 )

Which of the following relations is true when springs are connected parallelly? A K e = K 1 + K 2 B (1 / K e ) = (1/K 1 ) + (1/ K 2 ) C K e = (1/K 1 ) + (1/ K 2 ) D (1 / K e ) = K 1 + K 2

Description : Which of the following relations is true when springs are connected parallelly? A K e = K 1 + K 2 B (1 / K e ) = (1/K 1 ) + (1/ K 2 ) C K e = (1/K 1 ) + (1/ K 2 ) D (1 / K e ) = K 1 + K 2

Last Answer : A K e = K 1 + K 2

Equivalent stiffness of spring connected in paralled having stiffness k1 and k2 can be given as A) K = k1+ k2 B) K = k1- k2 C) 1/k = 1/k1 + 1/k2 D) 1/k = 1/k1 - 1/k2

Description : Equivalent stiffness of spring connected in paralled having stiffness k1 and k2 can be given as A) K = k1+ k2 B) K = k1- k2 C) 1/k = 1/k1 + 1/k2 D) 1/k = 1/k1 - 1/k2

Last Answer : A) K = k1+ k2

Which of the following relations is true when springs are connected series. (A) K e = K 1 + K 2 (B) (1 / K e ) = (1/K 1 ) + (1/ K 2 ) (C) K e = (1/K 1 ) + (1/ K 2 ) (D) (1 / K e ) = K 1 + K 2

Description : Which of the following relations is true when springs are connected series. (A) K e = K 1 + K 2 (B) (1 / K e ) = (1/K 1 ) + (1/ K 2 ) (C) K e = (1/K 1 ) + (1/ K 2 ) (D) (1 / K e ) = K 1 + K 2

Last Answer : (B) (1 / K e ) = (1/K 1 ) + (1/ K 2 )

Damping factor, ε = A. C/Cc B. C.Cc C. K/m D. K.m

Description : Damping factor, ε = A. C/Cc B. C.Cc C. K/m D. K.m

Last Answer : A. C/Cc

In coulomb damping, the amplitude of motion in each cycle is reduced by A. F/K B. 2F/K C. 4F/K D. F/4K

Description : In coulomb damping, the amplitude of motion in each cycle is reduced by A. F/K B. 2F/K C. 4F/K D. F/4K

Last Answer : C. 4F/K

If two springs having individual stiffness K, are in parallel, then their equivalent stiffness will be A. 2K B. K C. K/2 D. 4K

Description : If two springs having individual stiffness K, are in parallel, then their equivalent stiffness will be A. 2K B. K C. K/2 D. 4K

Last Answer : A. 2K

The natural frequency (in Hz) of free longitudinal vibrations is equal to a) Square root (k/m) / (2π) b) Square root (g/δ) / (2π) c) 0.4985/δ d) all of the mentioned

Description : The natural frequency (in Hz) of free longitudinal vibrations is equal to a) Square root (k/m) / (2π) b) Square root (g/δ) / (2π) c) 0.4985/δ d) all of the mentioned

Last Answer : d) all of the mentioned

Which of the following relations is true when springs are connected in parallel? where K = spring stiffnessa. K e = K 1 + K 2 b. (1 / K e ) = (1/K 1 ) + (1/ K 2 ) c. K e = (1/K 1 ) + (1/ K 2 ) d. None of the above

Description : Which of the following relations is true when springs are connected in parallel? where K = spring stiffnessa. K e = K 1 + K 2 b. (1 / K e ) = (1/K 1 ) + (1/ K 2 ) c. K e = (1/K 1 ) + (1/ K 2 ) d. None of the above

Last Answer : a. K e = K 1 + K 2

Which of the following relations is true when springs are connected parallelly? where K = spring stiffness a.Ke= K1 +K2 b. (1/Ke)=(1/K1)+(1/K2) c.Ke= (1/K1)+(1/K2) d.None of the above

Description : Which of the following relations is true when springs are connected parallelly? where K = spring stiffness a.Ke= K1 +K2 b. (1/Ke)=(1/K1)+(1/K2) c.Ke= (1/K1)+(1/K2) d.None of the above

Last Answer : a.Ke= K1 +K2

What is meant by coupled differential equation? A. The differential equation in which only rectilinear motions exit B. The differential equation in which only angular motions exit C. The differential equation in which both rectilinear and angular motions exit D. None of the above

Description : What is meant by coupled differential equation? A. The differential equation in which only rectilinear motions exit B. The differential equation in which only angular motions exit C. The differential equation in which both rectilinear and angular motions exit D. None of the above

Last Answer : C. The differential equation in which both rectilinear and angular motions exit

In which of the following cases, underdamping occurs? A. Roots are real B. Roots are complex conjugate C. Roots are equal D. Independent of the equation

Description : In which of the following cases, underdamping occurs? A. Roots are real B. Roots are complex conjugate C. Roots are equal D. Independent of the equation

Last Answer : B. Roots are complex conjugate

The equation m(d 2 x/ dt 2 ) + c (dx/dt) + Kx = F 0 sin ωt is a second order differential equation. The solution of this linear equation is given as A. complementary function B. particular function C. sum of complementary and particular function D. difference of complementary and particular function

Description : The equation m(d 2 x/ dt 2 ) + c (dx/dt) + Kx = F 0 sin ωt is a second order differential equation. The solution of this linear equation is given as A. complementary function B. particular function C. sum of complementary and particular function D. difference of complementary and particular function

Last Answer : C. sum of complementary and particular function

Consider the steady-state absolute amplitude equation shown below, if ω / ω n = √2 then amplitude ratio (X/Y) =? (X/Y) = √{1 + [ 2ξ (ω/ω n )] 2 } / √{[1 – (ω/ω n ) 2 ] 2 + {2ξ (ω/ω n ) 2 } A. 0 B. 1 C. less than 1 D. greater than 1

Description : Consider the steady-state absolute amplitude equation shown below, if ω / ω n = √2 then amplitude ratio (X/Y) =? (X/Y) = √{1 + [ 2ξ (ω/ω n )] 2 } / √{[1 – (ω/ω n ) 2 ] 2 + {2ξ (ω/ω n ) 2 } A. 0 B. 1 C. less than 1 D. greater than 1

Last Answer : B. 1

What is meant by coupled differential equation? A) The differential equation in which only rectilinear motions exit B) The differential equation in which only angular motions exit C) The differential equation in which both rectilinear and angular motions exit D) None of the above

Description : What is meant by coupled differential equation? A) The differential equation in which only rectilinear motions exit B) The differential equation in which only angular motions exit C) The differential equation in which both rectilinear and angular motions exit D) None of the above

Last Answer : C) The differential equation in which both rectilinear and angular motions exit

What is meant by coupled differential equation? a. The differential equation in which only rectilinear motions exit b. The differential equation in which only angular motions exit c. The differential equation in which both rectilinear and angular motions exit d. None of the above

Description : What is meant by coupled differential equation? a. The differential equation in which only rectilinear motions exit b. The differential equation in which only angular motions exit c. The differential equation in which both rectilinear and angular motions exit d. None of the above

Last Answer : c. The differential equation in which both rectilinear and angular motions exit

In which of the following cases, underdamping occurs? a) Roots are real b) Roots are complex conjugate c) Roots are equal d) Independent of the equation

Description : In which of the following cases, underdamping occurs? a) Roots are real b) Roots are complex conjugate c) Roots are equal d) Independent of the equation

Last Answer : b) Roots are complex conjugate

n which of the following cases, overdamping occurs? a) Roots are real b) Roots are complex conjugate c) Roots are equal d) Independent of the equation

Description : n which of the following cases, overdamping occurs? a) Roots are real b) Roots are complex conjugate c) Roots are equal d) Independent of the equation

Last Answer : a) Roots are real

If root of the characteristics equation has positive real part system is (a) Stable (b)Unstable (C) Marginally stable (d) Linear

Description : If root of the characteristics equation has positive real part system is (a) Stable (b)Unstable (C) Marginally stable (d) Linear

Last Answer : (b)Unstable

Amalgamation of companies is governed by - (A) AS -14 (B) AS-11 (C) AS- 13 (D) AS-9

Description : Amalgamation of companies is governed by - (A) AS -14 (B) AS-11 (C) AS- 13 (D) AS-9

Last Answer : (A) AS -14

Routes are built automatically by………………….., manually by the system administrator, or dynamically by routing protocols. A. route B. traceroute C. ifconfig D. netstat

Description : Routes are built automatically by………………….., manually by the system administrator, or dynamically by routing protocols. A. route B. traceroute C. ifconfig D. netstat

Last Answer : C. ifconfig

Which among the following is correct: a) An IP address can be private - for use on Local Area Network (LAN). b) It can be use on the internet or other wide area network (WAN). c) IP addresses can e determined statistically (assigned to a computer by a system administrator) or dynamically (assigned by another device on the network on demand). d) All of the Above e) None of These

Description : Which among the following is correct: a) An IP address can be private - for use on Local Area Network (LAN). b) It can be use on the internet or other wide area network (WAN). c) IP addresses ... dynamically (assigned by another device on the network on demand). d) All of the Above e) None of These

Last Answer : d) All of the Above

Which among the following is correct: a) An IP address can be private - for use on Local Area Network (LAN). b) It can be use on the internet or other wide area network (WAN). c) IP addresses can e determined statistically (assigned to a computer by a system administrator) or dynamically (assigned by another device on the network on demand). d) All of the Above e) None of These

Description : Which among the following is correct: a) An IP address can be private - for use on Local Area Network (LAN). b) It can be use on the internet or other wide area network (WAN). c) IP addresses ... dynamically (assigned by another device on the network on demand). d) All of the Above e) None of These

Last Answer : d) All of the Above