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KNOW WHY 10:10 IS DEFAULT TIME IN CLOCK !


You might have noticed that the watches and clocks found in product photographs and advertisements usually show the time 10:10.Have you wondered the reason behind this.We will discuss the reason for this in this article.

These are some reasons why exactly this time is chosen.According to the New York Times, the main reason is quite simple and obvious: aesthetics. There are a number of visual advantages to having the hands set at the 10:10 positions.

1.)One is that the hands are kept from overlapping at this position. Having them on both sides of the watch face ensures that the hands themselves are visible and can be appreciated.


2.)When we look at a watch at 10:10, we consider as if the watch is smiling. It is lovely to have a smiling face, rather than having a crying face when the time is at 8:20. So the form of the hands has a positive effect on the view.

 3.)The arrangement of the hands is symmetrical, which people generally find more pleasant than asymmetry, making the product more appealing to customers.

4.) The manufacturer's logo, usually is in the center of the face under the 12, is not only visible but nicely framed when the needles are positioned at 10:10.


5.) Additional elements on the face (like date windows or secondary dials), usually placed near the 3, 6, or 9, won't be obscured.

There are a number of urban legends regarding the 10:10 time floating around in the world. Many of them attribute it to a historic event (e.g. Lincoln/JFK assassinations, the dropping of the atomic bombs), but there isn’t any truth behind those explanations. 

KNOW THE DIFFERENCE BETWEEN MANUFACTURING AND FABRICATION !


Fabrication and manufacturing are industrial terms linked to the process of production or construction. Often, the two processes are confused, yet they are very different from each other. In this article we will explore the meaning of both fabrication and manufacturing in industrial processes.

Manufacturing is the process of converting raw materials into a finished product, by means of large-scale industrial operations.The manufacturing process are the steps in which the raw materials have to undergo before they are converted into the final product.Essentially, it is producing something from start to finish. The manufacturing sector involves large scale production with the use of machines, tools and chemical/biological processing. It is the course that raw materials have to undergo before being considered a final product.


Fabrication refers to the process of constructing products by combining diverse, typically standardized parts. The concept of fabrication always involves the process of assembling. An example of the process of fabrication is the fabrication of a boat by assembling standard components.

The key difference:

The key difference between manufacturing and fabrication is how much of the process a job involves. Fabrication involves the assembly of standard or specialised parts to form parts of a product to be used in the manufacture of the finished piece. Manufacturing, however, is a start to finish movement, from the creation of parts through to the final assembly to produce a finished product, often using areas of fabrication within the manufacturing process.

KNOW THE PURPOSE OF HOLE IN WASHBASIN !


You all must have seen the hole in the washbasin. Have you ever wondered, what is the purpose of these holes on the side of a sink. We will discuss the purpose of the hole in the washbasin in this article.

This opening is located on the wall of the basis nearest to you, near the top of the basin. The overflow opening serves two important functions:

1.)If the water tap is left on while the drain stopper is closed, the opening will channel water down into the drain opening rather than letting is spill out of the sink onto the floor.


2.)The overflow allows the sink to drain faster by introducing air into the system.

Preventing Overflow:

If you close the drain of your bathroom sink and fill up the sink basin to the level of the overflow hole, the water will begin draining into the overflow opening and down the drain. This helps prevent the water from spilling over the top of the basin, but because sink overflow holes are usually small, they may not prevent an overflow for very long.



Improving Drainage:

The sink overflow helps the basin drain faster by allowing air into the drain pipe via the overflow channel. When there's enough water in the basin to completely cover the drain opening, the drain can't get air through the water, creating a suction effect that slows the flow of water going down the drain. But with the overflow feeding air to the drain pipe, the suction effect is reduced and the water drains much faster. By contrast, sinks that don't have overflow openings commonly send up bubbles as they drain, and they typically drain more slowly.


Different sinks have varying designs along with hole types and where they are located. Some might be on the same side of the basin, whereas others might be located under the faucet or at the sink’s opposite side. The difference in the placement of these holes is meant for aesthetic reasons only.

KNOW WHY SECOND AND FOURTH ANGLE PROJECTION IS NOT USED IN ENGINEERING DRAWING !!

In Mechanical Engineering,drawings are made either in first angle projection or in third angle projection.We do not make drawings in second or fourth angle projection.We will discuss the reason behind doing so in this article.


Read this if you want to know difference between first angle and third angle projection.

DIFFERENCE BETWEEN FIRST ANGLE AND THIRD ANGLE PROJECTION EXPLAINED !!

Let us first understand the concept behind the angle projection system. Imagine you have Vertical Plane (VP) and Horizontal Plane (HP) (Perpendicular to each other),now we have 4 quadrants. For 1st angle projection system, we place object in 1st quadrant, for 2nd angle projection system, we place object in 2nd quadrant and so on.

In Second quadrant, Vertical plane (VP) lies in between object  and observer. Therefore front view of the object will lie on vertical plane whereas top view will lie on horizontal plane. As per rule of projection when horizontal plane is rotated 90 degree in clockwise direction, top and front view will overlap.
Overlapping projection views create confusion in the drawing. Therefore 2nd angle projection system is not used.



Similarly when object is placed in 4th quadrant both top and front view will overlap. Therefore fourth angle projection is also not used. 

To sum up, because of overlapping of front and top views 2nd and 4th angle projections are not used. First and third angle projection systems are recommended for orthographic projections.

KNOW WHY KTM IS FAST AND ROYAL ENFIELD IS SLOW !!


Royal Enfield despite of having 350 CC Engine is able to reach a top speed of 90-100 kmph whereas KTM Duke 390 is having 373 CC Engine is able to attain 160 to 165 kmph. Which simply means power of Duke 390 is way ahead of RE 350.

Now,coming to torque figures of both machine.Duke 390 produces 35 N⋅m @ 7250 rpm whereas RE 350 produces 28 Nm at 4000 rpm, which simply means maximum torque of RE 350 comes at very early stage whereas Duke 390 takes time to attain its maximum torque.In short we can say that RE 350 is a better pulling machine.

Now the question is that,what makes Duke 390 a fast machine despite of having almost same capacity engine.The technology used by Duke 390 is way ahead of RE 350. It uses DOHC,Liquid cooling and other latest technologies.Also Duke 390 is lighter than RE 350 but one thing that brings the drastic change is the construction of Engine.

Duke 390 uses oversquare engine 80.0mm bore and a 60.0mm stroke.The stroke is shorter than bore which helps in faster movement of engine as the distance to be covered in up and down motion is less.So,engine revs fast thus helps in attaining higher top speed.

On the other hand Royal Enfiled 350 uses undersquare engine 70 mm bore and 90 mm stroke.With longer stroke the engine becomes slow as distance to be covered is more.But this results in increased torque as,Torque=Force x Distance.
So,in this case engine revs slow which result in increased torque.

Click here to know more about oversquare,undersquare and square engine.


KNOW WHAT IS THE DIFFERENCE BETWEEN NET WEIGHT AND GROSS WEIGHT !

It is vital to understand weights when it comes to shipping goods. Weight is used to determine shipping costs regardless of whether the shipment is made by sea, air, rail, or road. The paperwork, quotes, and bill of lading will clearly indicate which weight the costs are based on for that shipping company.

Gross weight and net weight are two most commonly used terminologies used.We will understand the difference between gross weight and net weight in this article.

Net weight is the base weight of a product by itself. It is probably the term most people are familiar with, as they encounter it daily on food packaging. The net weight of a can beans is only the weight of the beans themselves and does not include the weight of the can.



The word gross means total. Thus, gross weight means total weight. The gross weight will include all aspects required for shipping. It includes the actual product, its packaging and any other packaging required to enable the shipping of the product.

There is one more terminology which is known as tare weight.Tare weight is the weight of the container in which a shipment travels. The weight of the container, full of your cargo, is what you will be charged to ship, or what you will pay to receive. Tare weight equals gross weight minus the net weight.

Summary:


1.Gross weight is the total weight of the shipment, including the raw products, its packaging, pallets, containers, and weight of transport vehicle.

2.Net weight refers to the weight of the raw product ordered. It does not include the weight of any container within which the product is held (e.g. a tin or box) or subsequent weight of pallets, larger containers, or the transport vehicle.

KNOW WHY FOG LIGHTS ARE USED !!

Front-facing fog lights and fog lamps are a type of automotive headlight that is designed to emit light in a bar-shaped beam. The beam is typically designed to have a sharp cutoff on top, and the actual lights are usually installed low and aimed toward the ground at a sharp angle.


WHY DO WE NEED THEM?

Fog is a regular occurrence in many parts of the world, especially near large bodies of water. When the conditions are right, tiny water droplets or ice crystals can float in the air, just over the surface of the ground. In addition to acting like a cloud and blocking your view, the tiny water droplets or ice crystals decrease visibility even further by reflecting light that hits them. This makes driving through fog with headlights, and especially high beams, a frustrating and dangerous experience.

Fog lights are a solution here, and take a different approach to all that water vapor hanging over the road. They work in multiple poor visibility conditions, including fog, mist, snow, and even blowing sand. In order to let you see the road through the fog, factory-equipped fog lights are placed as low as reasonably possible, usually in the lower bumper cover on most modern vehicles.

The purpose of the fog lamp is to show the driver the road edges, lane markings and the foreground abruptly appearing during road drive. When used with headlamps in extremely poor visibility, a driver can maneuver safely at slow speed in snow, fog or heavy rains.

DIFFERENCE BETWEEN HEADLIGHT AND FOG LIGHT

1.Driving lights are used in vehicle to provide clear view of forward of the vehicle and intended to supplement the high beam of a standard headlight system. While fog lights are used to reflect the fog, snow, or dust particles in the air are developed for use on dangerously thick conditions.

2.Driving lights produces white light while fog light produces both white and yellow light.

3.Driving lights are used to show clear vision to avoid any road obstacles during night time while fog lights are used in specific conditions like dust, train, fog or snow.

4.Driving lights are installed in every vehicle by default by the manufacturer while in some areas fog lights are also installed according to weather condition in specific region and in most areas it is optional.


WHEN TO USE FOG LIGHT:

You should only use fog lights in situations where there is poor visibility conditions caused by rain, fog, snow, or even an excessive amount of dust in the air.

In short, we can say that fog lamps should be only used in conditions where there is less visibility caused due to snow,fog,dust or rain.We should not use fog lamp in clear conditions as it may distract other drivers on road.