# Mechanical Articles Archive

## Role of inhibitors in petrol and diesel oil

Following are the role of inhibitors in petrol as well as diesel oil – When gasoline or diesel oil is stored for long time in storage tank, it may undergo slow oxidation causing gum formation which is

## Difference between petrol and diesel oil

Following are the differences between petrol and diesel: Petrol Diesel oil Knocking in petrol engine is due to the sudden spontaneous combustion of petrol before sparking of spark plug. Knocking in diesel engine is due to delay

## Modes of Heat transfer

Heat is defined as the energy transfer without transfer of mass across the boundary of the system due to the temperature difference between the system and surrounding. The Process of heat flow from a higher temperature body

## Types of rope drive – fiber and wire rope

Rope drives are wildly used where large amount of power is to be transmitted from one pulley to another pulley. There are two types of rope drive – Fiber rope These are made up from fiber material

## Difference simple gear, compound gear and elliptical gear train

Simple gear train Compound gear train Elliptical gear train Only one gear in each shaft and there is a relative motion between shaft axis. In this gear there is more than one gear on the shaft which

## Types of body of material

There are three types of body are mainly considered in strength of material. 1) Elastic body A body regains its originals dimensions when the external load acting on it is completely removed are called as elastic body.

## Mechanical Properties of Material

These Properties are explained as follows – 1) Strength The ability of a material to resist its failure under the action of load is called as strength of material. 2) Elasticity The property by virtue of which

## Difference between gear and belt drive

Belt drive Gear drive Belt drive is used when distance between driving shaft and driven shaft is more. Gear drive is used when distance between driven and driving shaft is less. Due to the sleep laser velocity

## Velocity ratio of machine (Formula)

Define velocity ratio of a machine and how it is determined – The velocity ratio (V.R.) of a machine is the ratio of distance moved by the effort to distance moved by the load. Formula – Velocity

## Hoist mechanism and its uses

The mechanism which is used for raising and lowering heavy loads to the desire height by using comparatively small effort is called as hoist mechanism. It is mostly operated with a system of pulley and gears (either