Theory of Machines
Gears and Gear Trains
Marks 1Marks 2Marks 5
Analysis of Plane Mechanisms
Marks 1Marks 2
1
GATE ME 2006
MCQ (Single Correct Answer)
+2
-0.6
A vibratory system consists of a mass $$12.5$$ kg, a spring of stiffness $$1000$$ $$N/m,$$ and a dashpot with damping coefficient of $$15$$ $$Ns/m.$$

The value of logarithmic decrement is

A
$$1.35$$
B
$$0.42$$
C
$$0.68$$
D
$$0.66$$
2
GATE ME 2006
MCQ (Single Correct Answer)
+2
-0.6
A vibratory system consists of a mass $$12.5$$ kg, a spring of stiffness $$1000$$ $$N/m,$$ and a dashpot with damping coefficient of $$15$$ $$Ns/m.$$

The value of critical damping of the system is:

A
$$0.223$$ $$Ns/m$$
B
$$17.88$$ $$Ns/m$$
C
$$71.4$$ $$Ns/m$$
D
$$223.6$$ $$Ns/m$$
3
GATE ME 2005
MCQ (Single Correct Answer)
+2
-0.6
In a spring-mass system, the mass is 0.1 kg and the stiffness of the spring is 1 kN/m. By introducing a damper, the frequency of oscillation is found to be 90% of the original value. What is the damping coefficient of the damper?
A
1.2 N.s/m
B
3.4 N.s/m
C
8.7 N.s/m
D
12.0 N.s/m
4
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
A mass M, of 20 kg is attached to the free end of a steel cantilever beam of length 1000 mm having a cross-section of 25 $$\, \times \,$$ 25 mm. Assume the mass of the cantilever to be negligible and Esteel = 200 Gpa. If the lateral vibration of this system is critically damped using a viscous damper, the damping constant of the damper is GATE ME 2004 Theory of Machines - Vibrations Question 45 English
A
1250 Ns/m
B
625 Ns/m
C
312.50 Ns/m
D
156.25 Ns/m
GATE ME Subjects
Engineering Mechanics
Machine Design
Strength of Materials
Heat Transfer
Production Engineering
Industrial Engineering
Turbo Machinery
Theory of Machines
Engineering Mathematics
Fluid Mechanics
Thermodynamics
General Aptitude