Difference between productivity and production

Production means the process of converting the raw material into the finished product by performing a set of manufacturing operations in a predetermined sequence. Production refers to the absolute output. Thus, if the input increases the output will normally increases in the same proportion. But the productivity remains unchanged. The output increases with the same input of resource or we get the same output with lesser input of the resource, the productivity increases. 

Production means the output in terms of money without any regard to the input of resource while productivity is a human attitude to produces more and more with less and less input of resource.

Now let we summaries the difference between them one by one point wise below.

Differences :

  • Production is the act of manufacturing goods for there use or sale while productivity is the rate at which goods are produced.
  • Production is actual process of conversion and productivity is the utilization of resources to form goods.  
  • Production is measure of produce good while measure of efficiency is called as productivity. 
  • Production is process while productivity is measure. 
  • Production is number of units actually produced while productivity is ratio of output to input.
  • Production is absolute term and productivity is relative term.


Definition of productivity

Productivity is the ratio of financial output in a period of time to the financial input in the same period of time.

Productivity is also called financial efficiency. 


Productivity = Financial efficiency 
= Financial output ( in a period of time ) / Financial input ( in the same period )

In other words, productivity is the quantitative relationship between what we produce and the resource which we used. 

Carter carburetor | Working

Carter carburettor is multiple jets, plain tube type of carburettor with only one adjustment which is for idling or low-speed operation.

Carter carburettor was established in 1909 and founded by William Carter, who started experimenting with automotive carburettors while running a bicycle shop.

Carter carburettor is normally used in Jeeps.

Working of carter carburettor:

A combination of fuel and air is drawn into the nozzle chamber through the jets on side of the nozzle forming a time spray which is carried by the standpipe to the venturi or main air passage, where it is absorbed by incoming air forming mixture on which engine operates.  

Jets on the side of the nozzle come into operation in direct proportion to throttle position. While more and the more throttle opened, the more jets are in operation. At wide-open throttle, all jets are working and the engine is getting maximum supply. 

Low-speed jet assembly supplies fuel to the engine at idle engine speed and up to approximately 20 km/h fuel flowing through a drilled passage connecting low-speed jet chamber with carburettor well. 

At idling, fuel is drawn through a low-speed jet and idling port at the edge of the throttle valve. With the idling screw, the mixture for idle running can be enriched or made leaner as required. 

What is magneto ignition system

Magneto is one of the special types of ignition system with its own electric generator to provide the necessary energy for the system.

Construction of the magneto ignition system :


It is mounted on the engine and replaces all the components of the coil ignition system expect the spark plug.


When a magnet is rotated by the engine producing a very high voltage and it does not need a battery as a source of external energy. 



Magneto Ignition system

Magneto can be two types :

  • Rotating armature type
In this type, the armature consisting of the primary and secondary windings all rotate between the poles of a stationary magnet.
  • Rotating magnet type.  
In this type, the magnet revolves and the windings are kept stationary. 

Usually, the third type called polar induction type is also in used. In this type, both the magnet and windings remain stationary but the voltage is generated by reversing the flux field with the help of soft iron polar projections is called inductors. 


Working principle of magneto ignition system :


At first, the magnets in flywheel rotate the magneto and magnetic flux of the magnets induces a current in the primary coil by the flywheel. 


A magnetic field develops around the primary coil with current flowing in the primary circuit. This magnetic field also surrounded by the secondary coil.  

The flywheel continues to rotate so the breaker points open and magnetic field produced by the current in the primary winding collapses. 


This collapsing magnetic field flows across the secondary coil which induces a current in the secondary coil. 


There is a winding ratio in the two coils is 60:1 so the voltage is transformed to the 10000 and 15000 volts needed to fire the spark plug. 


Advantages of magneto ignition system :

  • Reliable for medium and high speed. 
  • Less maintenance.
  • More effective because no battery is used. 
Disadvantages of magneto ignition system :
  • Starting problem issue due to low cranking speed at a starting. 
  • More expensive compared with the battery ignition system. 
  • Possibility of misfire due to leakage because wiring carries very high voltage. 

Applications of magneto ignition system

Magneto ignition system finds applications in the engine where other means of electricity not available, such as chainsaws and lawnmowers because of self-powered characteristics. It also used where other means of electricity also available in the aviation piston engine. The spark intensity increases with the speed of the engine, so it is used in racing cars. Some other applications are following below. 


Application of magneto ignition system : 

  • Tractors, oil burners and outboard motors
  • Washing machine 
  • Trucks and cement mixture trucks
  • Used in buses
  • Aeroplane engine
  • Power units
  • Marine and natural gas engines

Advantages and disadvantages of magneto ignition system

Magneto is one of the special types of ignition system with its own electric generator to provide the necessary energy for the system. The main advantages of a magneto ignition system are it does not require any external source to generate energy. Now you can check it out some advantages and disadvantages of Magento ignition system listed below. 


Advantages of magneto ignition system :

  • Reliable for medium and high speed. 
  • Less maintenance.
  • More effective because no battery is used. 
  • Provide better spark at low speed. 
  • Occupy less space. 
  • Efficiency improves due to high-intensity spark. 

Disadvantages of magneto ignition system :

  • Low cranking speed at a starting. 
  • Starting is troublesome. 
  • More expensive compared with the battery ignition system. 
  • Possibility of misfire due to leakage because wiring carries very high voltage. 
  • Adjustment of spark timing has determined the effect upon the spark voltage.