GATE ME 1987 | Design of Bearings Question 23 | Machine Design

GATE ME 1987

MCQ (Single Correct Answer)

-0.3

The expected life of a ball bearing subjected to a load of $$9800N$$ and working at $$1000RPM$$ is $$3000$$ hours. What is the expected life of the same bearing for a similar load of $$4900$$ $$N$$ and a speed of $$2000rpm$$

Unchanged

$$12,000$$ hours

$$1,500$$ hours

$$6,000$$ hours

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Theory of Machines

Analysis of Plane Mechanisms Flywheel Gears and Gear Trains Vibrations

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Engineering Mechanics Static and Dynamics

Production Engineering

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

Strength of Materials

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

Turbo Machinery

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

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

Heat Transfer

Convection Radiation Heat Exchangers Conduction Fin Design and Transient Heat Conduction

Industrial Engineering

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

Thermodynamics

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

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