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Machine Design

Machine Design
In a full journal bearing, the angle of contact of the bearing with the journal is

180°
120°
270°
360°

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Machine Design
Lewis equation is applied

To stronger of the pinion or gear
To weaker of the pinion or gear
Only to the gear
Only to the pinion

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Machine Design
A sliding bearing which operates without any lubricant present, is called

Zero film bearing
Boundary lubricated bearing
Hydrodynamic lubricated bearing
Hydrostatic lubricated bearing

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Machine Design
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Tangent key
Gib-head key
Feather key
Woodruff key

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Universal joint
Bolted joint
Knuckle joint
Cotter joint

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Machine Design
The piston pin bearings in heavy duty diesel engines are

Cylindrical roller bearings
Needle roller bearings
Tapered roller bearings
Spherical roller bearings

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