Description : If a mass whose moment of inertia is Ic/3 is placed at the free end and the constraint is assumed to be of negligible mass, then the kinetic energy is ______ a) 1/6 Icω 2 b) 1/2Icω 2 c) 1/3Icω 2 d) 1/12Icω 2
Last Answer : a) 1/6 Icω 2
Description : If Ic = 125 Kg-m 2 and ω= 20 rad/s, calculate the kinetic of the constraint. a) 8333 J b) 7333 J c) 6333 J d) 9333 J
Last Answer : a) 8333 J
Description : If frequency of excitation of a forced vibration system with negligible damping is very close to natural frequency of the system, then the system will A) Execute harmonic motion of large amplitude B) Beat with a very high peak amplitude C) Perform aperiodic motion D) None of the above
Last Answer : A) Execute harmonic motion of large amplitude
Description : If the mass of body increases A Frequency increases 4 times B Frequency decreases 4 times C Frequency become half D Frequency become double
Last Answer : C Frequency become half
Description : If the mass of body increases 4 times A Frequency increases 4 times B Frequency decreases 4 times C Frequency become half D Frequency become double
Description : If the damper is not provided and the system is in resonance, which of the following is the correct isolation factor? A. 0 B. 0.5 C. 0.25 D. Infinite
Last Answer : D. Infinite
Description : In measuring critical speed of shaft experiment, it was found that the frequency ratio is 0.707 when the eccentricity is 0.05 m. what will be the displacement of the system. A. 0.05 m B. 0.005 m C. 0.5 m D. Infinite
Last Answer : A. 0.05 m
Description : If the damper is not provided and the system is in resonance, which of the following is the correct isolation factor?(A) 0 (B) 0.5 (C) 0.25 (D) Infinite
Last Answer : (D) Infinite
Description : If two discs are attached to one shaft at its both end, then it has_____ number of natural frequencies. A Infinite B One C Two D None of the mentioned
Last Answer : B One
Description : In energy method for finding frequency of the system A The sum of kinetic and potential energy is constant B The sum of kinetic and potential energy is zero C Frequency cannot be determined by energy method D None of the mentioned
Last Answer : A The sum of kinetic and potential energy is constant
Description : In semi-definite system one of the natural frequencies is A Zero B One C Two D Infinite
Last Answer : A Zero
Description : The number of natural frequency in two rotor system is A Zero B Infinite C Two D One
Last Answer : C Two
Description : In semidefinite system one of the natural frequencies is A. Zero B. Non-zero C. Infinite one D. One
Last Answer : A. Zero
Description : The number of natural frequencies in a two rotor system is A. Infinite B. Zero C. Two D. Four
Last Answer : C. Two
Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position? * 1 point (A) Energy method (B) Rayleigh's method (C) Equilibrium method (D) All of the above
Last Answer : (B) Rayleigh's method
Description : As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is same at all the times. A zeroB minimum C maximum D constant
Last Answer : D constant
Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position? A Energy method B Rayleigh’s method C Equilibrium method D All of the above
Last Answer : B Rayleigh’s method
Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position A Energy method B Rayleigh's method C Equilibrium method D None of the mentioned
Last Answer : B Rayleigh's method
Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position? A. Energy method B. Rayleigh's method C. Equilibrium method D. All of the above
Last Answer : C. Equilibrium method
Description : As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is same at all the times. A. zero B. minimum C. maximum D. constant
Last Answer : D. constant
Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position? A) Energy method B) Rayleigh's method C) Equilibrium method B) All of the above
Last Answer : B) Rayleigh's method
Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position? A) Energy methodB) Rayleigh's method C) Equilibrium method D) All of the above
Description : As per Energy Method, the summation of kinetic energy and potential energy must D be ________ which is same at all the times. ( A ) zero ( B ) minimum ( C ) maximum ( D ) constant
Last Answer : ( D ) constant
Description : According to which method, maximum kinetic energy at mean position is equal to B maximum potential energy at extreme position? (A) Energy method (B) Rayleigh’s method (C) Equilibrium method (D) All of the above
Last Answer : (B) Rayleigh’s method
Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position? a. Energy method b. Rayleigh's method c. Equilibrium method d. All of the above
Last Answer : b. Rayleigh's method
Description : In Rayleigh’s method, the _____________ at the mean position is equal to the maximum potential energy (or strain energy) at the extreme position. (A) minimum kinetic energy (B) minimum potential energy (C) maximum kinetic energy (D) none of the above
Last Answer : (C) maximum kinetic energy
Description : As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is same at all the times. (A) zero (B) minimum (C) maximum (D) constant
Last Answer : (D) constant
Description : The speed at which the shaft runs so that the additional deflection from the axis of rotation of the shaft becomes infinite, is known as _________ * 1 point (A) Whirling speed (B) Rotational speed (C) Stabilizing speed (D) Reciprocating speed
Last Answer : (A) Whirling speed
Description : What are discrete parameter systems? *1 point (A) Systems which have infinite number of degree of freedom (B) Systems which have finite number of degree of freedom (C) Systems which have no degree of freedom (D) None of the above
Last Answer : (B) Systems which have finite number of degree of freedom
Description : The speed at which the shaft runs so that the additional deflection of the shaft from the axis of rotation becomes ___________, is known as critical or whirling speed. (A) zero (B) minimum (C) maximum (D) infinite
Last Answer : (D) infinite
Description : The speed at which the shaft runs so that the additional deflection from the axis of rotation of the shaft becomes infinite, is known as _________ A. Whirling speed B. Rotational speed C. Stabilizing speed D. Reciprocating speed
Last Answer : A. Whirling speed
Description : The number of natural frequencies in case of cantilever is A Zero B One C Two D Infinite
Last Answer : D Infinite
Description : What are discrete parameter systems? A. Systems which have infinite number of degree of freedom B. Systems which have finite number of degree of freedom C. Systems which have no degree of freedom D. None of the above
Last Answer : B. Systems which have finite number of degree of freedom
Description : What are discrete parameter systems?a. Systems which have infinite number of degree of freedom b. Systems which have finite number of degree of freedom c. Systems which have no degree of freedom d. None of the above
Last Answer : b. Systems which have finite number of degree of freedom
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 : A vehicle suspension system consists of a spring and a damper. Stiffness of spring is 3.5 KN/m and damping constant of damper is 400Ns/m. If mass is 50 kg, then damping factor is A 0.606 B 0.10 C 0.666 D 0.471
Last Answer : D 0.471
Description : A vehicle suspension system consists of a spring and a damper. The stiffness of the spring is 3.6 kN/m and the damping constant of the damper is 400 Ns/m. If the mass is 50 kg, then the damping factor (d ) and damped natural ... , are a) 0.471 and 1.19 Hz b) 0.471 and 7.48 Hz c) 0.666 and 1.35 Hz
Last Answer : a) 0.471 and 1.19 Hz
Description : A vehicle suspension system consists of a spring and a damper. The stiffness of the spring is 3.6 kN/m and the damping constant of the damper is 400 Ns/m. If the mass is 50 kg, then the damping factor (d ) and damped natural ... .19 Hz b) 0.471 and 7.48 Hz c) 0.666 and 1.35 Hz d) 0.666 and 8.50 Hz
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
Description : While calculating the natural frequency of a spring-mass system, the effect of the mass of the spring is accounted for by adding X times its value to the mass, where X is A 1/2 B 1/3 C 1/4 D 3⁄4
Last Answer : B 1/3
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 : While calculating the natural frequency of a spring-mass system, the effect of the mass of the spring is accounted for by adding X times its value to the mass, where X is A. 1/2 B. 1/3 C. 1/4 D. 3/4
Last Answer : B. 1/3
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
Description : While calculating the natural frequency of a spring-mass system, the effect of the B mass of the spring is accounted for by adding X times its value to the mass, where X is (A) 1/2 (B) 1/3 (C) 1/4 (D) 3/4
Last Answer : (B) 1/3
Description : While calculating the natural frequency of a spring-mass system, the effect of the mass of the spring is accounted for by adding X times its value to the mass, where X is a) 1/2 b) 1/3 c) 1/4 d) 3/4
Last Answer : b) 1/3
Description : As compared to the volume occupied by gas, the volume of particles is A. more B. infinite C. negligible D. less than the volume of gas
Last Answer : negligible
Description : For a two-rotor system, the length of one shaft (A) is twice the other (B), then what is the relation between the mass moment of inertia of the shafts. A 2I(A) = I(B) B I(A) = 2I(B) C I(A) = I(B) D 2I(A) = 3I(B)
Last Answer : A 2I(A) = I(B)
Description : If the mass moment of inertia is increased to four times, then what will be the effect on free torsional vibrations of a single motor system? a) Increases 4 times b) Increases 2 times c) Decreases 4 times d) Decreases 2 times
Last Answer : d) Decreases 2 times
Description : When the speed of a body is doubled, its kinetic energy becomes (a) double (b) half (c) quadruple (d) one-fourth
Last Answer : Ans:(c)