GATE ME 2014 | Vibrations Question 32 | Theory of Machines

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GATE ME 2014

MCQ (Single Correct Answer)

-0.3

Critical damping is the

largest amount of damping for which no oscillation occurs in free vibration

smallest amount of damping for which no oscillation occurs in free vibration

largest amount of damping for which the motion is simple harmonic in free vibration

smallest amount of damping for which the motion is simple harmonic in free vibration

GATE ME 2014

MCQ (Single Correct Answer)

-0.3

In vibration isolation, which one of the following statements is NOT correct regarding Transmissibility ($$T$$)?

$$T$$ is nearly unity at small excitation frequencies

$$T$$ can be always reduced by using higher damping at any excitation frequency

$$T$$ is unity at the frequency ratio of $$\sqrt 2 $$

$$T$$ is infinity at resonance for undamped systems

GATE ME 2013

MCQ (Single Correct Answer)

-0.3

If two nodes are observed at a frequency of $$1800$$ rpm during whirling of a simply supported long slender rotating shaft, the first critical speed of the shaft in rpm is

$$200$$

$$450$$

$$600$$

$$900$$

GATE ME 2010

MCQ (Single Correct Answer)

-0.3

The natural frequency of a spring-mass system on earth is $${\omega _n}.$$ The natural frequency of this system on the moon (g_moon = g_earth/6) is

$${\omega _n}$$

$$0.408$$$${\omega _n}$$

$$0.204$$$${\omega _n}$$

$$0.167$$$${\omega _n}.$$

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GATE ME Subjects

Engineering Mechanics

Engineering Mechanics Static and Dynamics

Strength of Materials

Springs Pure Bending Stresses In Beams Simple Stress and Strain Complex Stresses Moment of Inertia Deflection of Beams Shear Force and Bending Moment Torsion Thin Cylinders Columns and Struts Strain Energy Method

Theory of Machines

Vibrations Gears and Gear Trains Flywheel Analysis of Plane Mechanisms

Engineering Mathematics

Linear Algebra Vector Calculus Probability and Statistics Differential Equations Transform Theory Calculus Complex Variable Numerical Methods

Machine Design

Bolted Riveted and Welded Joints Design For Static Loading Design of Brakes and Clutches Design of Spur Gears Design of Bearings Fatigue Strength

Fluid Mechanics

Fluid Properties Boundary Layer Turbulent Flow Fluid Dynamics Laminar Flow Fluid Kinematics Fluid Statics

Turbo Machinery

Heat Transfer

Conduction Fin Design and Transient Heat Conduction Convection Radiation Heat Exchangers

Thermodynamics

Calculation of Work and Heat Entropy and Irreversibility Properties of Pure Substances Basic Concepts and Zeroth Law First Law of Thermodynamics Rankine Cycle Availability Second Law of Thermodynamics

Production Engineering

Metrology and Inspection Sheet Metal Forming Processes Welding Process Metal Forming Metal Cutting Advance Machine Tools Machining Casting

Industrial Engineering

Queuing Production Planning and Control Line Balancing Forecasting Linear Programming Assignment Pert and Cpm Inventory Control Transportation Scheduling

General Aptitude

Numerical Ability Logical Reasoning Verbal Ability