Journal bearings - basics

Hydrostatic bearing enters Hydrodynamic state when the journal is

• Stationery

• Rotating

• Both ‘a’ and ‘b’

• None of the above

When the load of bearing is carried by direct surface to surface contact is called

• Boundary condition

• Full film condition

• Dry condition

• None of the above

The lubrication in which load of bearing is carried partly by a film of fluid and partly by direct surface contact is called

• Full film condition

• Boundary condition

• Dry condition

• None of the above

The lubrication in which load of bearing is carried solely by a film of fluid and there is no contact between the two bearings surface is called

• Full film condition

• Boundary condition

• Dry condition

• None of the above

The type of bearing used in crankshaft is

• Plain bearing

• Roller bearing

• Ball bearing

• Magnetic bearing

Which type of bearing(s) provides a bearing surface for forces acting along axis to the shaft?

• Thrust bearing

• Journal bearing

• Linear bearing

• None of the above

The following type(s) of bearing(s) have no rolling element.

• Thrust bearing

• Linear bearing

• Journal bearing

• All of the above

Which of the following are functions of bearings?

• Ensure free rotation of shaft with minimum friction

• Holding shaft in a correct position

• Transmit the force of the shaft to the frame

• All of the listed

A radial bearing supports the load that acts along the axis of the shaft.

• True

• False

Sliding contact bearings, also called plain bearings have no problem of wear.

• True

• False