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Simply defined, cavitation is the formation of bubbles or cavities in liquid, developed in areas of relatively low pressure around an impeller.Destruction of impeller. Excessive vibration – leading to premature seal and bearing failure.

The holes are diametrically opposite to each other. The aluminium disc stops rotating even when the small edge of the disc come under the pole of the magnet. The aluminium disc stops rotating even when the small edge of the disc come under the pole of the magnet. The holes will limit the revolution of the disc.

A ground fault is an inadvertent contact between an energized conductor and ground or equipment frame. The return path of the fault current is through the grounding system and any personnel or equipment that becomes part of that system. Ground faults are frequently the result of insulation breakdown.

The purpose of silica gel breathers is to absorb the moisture in the air sucked in by the transformer during the breathing process. Explanation: In order to absorb moisture from air while breathing process, breather chemical is used. So, breather chemical should possess the required ability of absorbing moisture.

The device which can be used as switch as well as protective device is miniature circuit breaker.

When D is the distance between co-channel cells and R be the cell radius, then the minimum ratio of D/R that is required to provide a tolerable level of co-channel interference is called the co-channel reuse ratio or co-channel interference reduction factor.

The key characteristic of a cellular network is the ability to re-use frequencies to increase both service coverage and system capacity. In a cellular system, adjacent cells use the different frequency band. A group of contiguous cells where the frequency band in each cell is different is called a cluster of cells.

A coefficient of friction is a value that shows the relationship between the force of friction between two objects and the normal reaction between the objects that are involved. The diagram shows the relation between the limiting friction and normal reaction as coefficient of friction .

In electrical engineering, single-phase electric power is the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison.Because the voltage of a single phase system reaches a peak value twice in each cycle, the instantaneous power is not constant.

There are several Types of Insulators in Transmission Lines but the most commonly used are pin type, suspension type, strain insulator and shackle insulator.

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