Epicyclic Gear Train Apparatus:

A gear train is a combination of gears used to transmit motion from one shaft to another. It becomes necessary when it is required to obtain large speed reduction. In epicyclic gear train, the axes of some of the wheels are not fixed but rotate around the axes of other wheels with which they mesh. Epicyclic gear trains are useful to transmit very high velocity ratios with gears of smaller sizes in lesser space.

Static & Dynamic Balancing Apparatus:

A system of rotating masses is said to be in static balance if the combined mass centre of the system lies on the axis of rotation. When several masses rotate in different planes, the centrifugal forces, in addition to being out of balance, also form couples. A system of rotating masses is in dynamic balance when there does not exist any resultant centrifugal force as well as resultant couple.

Motorised Gyroscope Apparatus:

This device consisting of a spinning mass, typically a disk or wheel, mounted on a base so that its axis can turn freely in one or more directions and thereby maintain its orientation regardless of any movement of the base. If the axis of the spinning or rotating body is given an angular motion about an axis perpendicular to the axis of the spin, an angular acceleration acts on the body about the third perpendicular axis. The torque required to produce the acceleration is known as active gyroscopic torque. The reactive gyroscopic torque or couple also acts similar to the concept of centripetal and centrifugal forces on a body.

Cam Analysis Machine:

A cam is a mechanical member used to impart desired motion to a follower by direct contact. The cam may be rotating or reciprocating whereas the follower may be rotating, reciprocating or oscillating. Complicated output motions which are otherwise difficult to achieve can easily be produced with the help of cams. Cams are widely used in automatic machines, internal combustion engines machine tools and so on.

Whirling of Shaft Apparatus:

The rotational speed at which a shaft tends to bow out is called a whirling or whipping or critical speed of the shaft. The apparatus is used to determine the critical speed of the rotating shaft and its theoretical verification. With the help of this experiment an observation of whirl form as well as the observation of self-excited motion (vibration) is also done.

Journal Bearing Apparatus:

In hydrodynamic bearings, the shaft and the bearing shell are separated from each other during operation by a supporting lubricating film. The pressure in the lubricating film in hydrodynamic journal bearings is generated by the relative motion between bearing shell and shaft. The position of the shaft in relation to the speed and the load is important for an analysis of the tribological process in the bearing shell of a journal bearing.