Science hangama

सभी किसान भाइयों से निवेदन है कि आप सभी द्वारा लगाई गई फसलें अगले 15 से 20 दिन में पक कर बिल्कुल तैयार हो जाएंगी। इसलिए अपने-अपने खेतों पर लगे ट्रांसफार्मर के आसपास लगभग 10X10 फिट तक सफाई व्यवस्था कर दें ताकि किसी भी प्रकार से इलेक्ट्रिसिटी फॉल्ट होने पर बिजली के तारों निकलने वाली चिंगारी से आपकी खड़ी को कोई नुकसान ना पहुंचे।🌾🌾

It is a request to all the farmer brothers that the crops planted by all of you will ripen and be ready in the next 15 to 20 days. Therefore, make arrangements for cleaning up to 10X10 feet around the transformer installed on your respective fields so that in case of any kind of electricity fault, the spark coming out of the electric wires does not harm your standing.🌾🌾

Design and Fabrication Of Gear and Spline Cutting Attachment In Lathe

Abstract :-

Mechanical engineering without production and manufacturing is meaningless and inseparable.
Production and manufacturing process deals with conversation of raw materials inputs to finished products as per required dimensions specifications and efficiently using recent technology.Our project design and fabrication of spline (gear) cutting attachment is used to cut gear or splines over the cylindrical job. Our main aim is prove lathe is a versatile machine. So this gear cutting operation is done by lathe itself.

Working :-
In this project End mill cutter (tool) is fixed in lathe chuck and job is fixed over the compound slide by gear cutting attachment.

Working Of Gear and Spline Cutting Attachment For Lathe
Working Of Gear and Spline Cutting Attachment For Lathe
This fixture has spindle with indexing plate, here job is hold rigidly in spindle itself Feed is given by cross slide movement. And depth of cut is given by movement of carriage. When cutter rotate at 1100 Rpm. Angular splines also done by this .indexing can be done with the aid of indexing plate
Advantage:-
1) Fixture cost is low
2) No need of purchase special machine for this
3) Production cost is low

Disadvantage:-
1) Accuracy is little bit low

Solar Water Heaters, also known as solar domestic hot
water systems are very efficient and less expensive
way to generate the supply of hot water at domestic
places. These solar water heater systems can be used
in any climate and the fuel which they use for heat
generation is sun rays which is available free of cost.
Solar Water Heater
Advantages of Solar Water Heater:
Availability of hot water through out the year : The
solar water heater systems works throughout the year,
it is only during the winter season you would have to
heat the water more with the help of boiler or an
immersion heater because water cools down quickly
during winters.
Free of Cost: We no need to pay any monthly charges
for this system because this system does not require
any electricity usage and uses just sunlight which is
available free of cost.
No pollution Problem: this system is a green and
renewable it helps in the reduction of carbon dioxide
gas.
“ Nowadays most of the people are
showing lot of interest to buy the solar based
products and these products are very useful in
saving the electricity. Even engineering
students are also showing lot of interest to
build new solar energy projects which would be
helpful for next generation.
How Solar Water Heater Works:
The system includes storage tanks and solar panels
called as collectors that are fitted on the top of the
building. These collect energy from the sun and then
use that energy To boil the water additionally a boiler
or an immersion heater can be used.
Types of Water Heating Solar Panels:
There are two types of solar water heating panels.
Namely,
Evacuated tubes
Smooth and even plate collectors, fixed on roof tiles or
integrated inside the roof.
Big size solar panels can be arranged if you would
want to warm-up the home. When the heat generation
is very less and hence is not considered worthy.
Types of Solar Water Heating Systems:
The solar water heating systems are classified into two
types, they are:
Active solar water heating system
Passive solar water heating system
Active Solar Heating System:
The active solar system consist controls and
circulation pumps for the operation.
The active solar heating systems are two types:
Direct circulation systems: The direct circulation
systems circulate the home water through the
collectors since these systems mostly used in where
the climate is rarely cold and freezing.
Indirect circulation systems: the pumps here circulate
a heat transfer fluid through a collector and a heat
exchanger which heats the water flowing into the
home. These systems are most used in places where
the temperature is very chilling and freezing.
Passive Solar Heating Systems:
As compared to active solar heating systems these
systems are low in cost but are less effective. And
these devices are more reliable. The passive solar
heating systems doesn’t consist a ny controls and
circulations as active heating systems.
The passive heating systems are classified into two
types: