Mechanical Engineering

The average annual salary for an engineer in the United States is $70,000. Salaries can vary based on location and experience. The low end of the scale is $47,700 and the high end of the scale is $90,340.

After diploma there is a good salary scale companies provide very good packages for diploma holders on an average a diploma holder receives salary in between 3lpa- 4 lpa which is a very good package for a fresh candidate...

Reliability is not measured. Reliability is an estimation, typically probablistic.

Material: 2 litre pop bottle (empty) -- coat hanger wire - 12-15 cm long - straight -- empty film container -- tin can (tomato can) -- masking tape -- string -- aerosol can cap -- copper wire Method: 1) Cut 4 slits in the film container, 1 cm long at equal distances between them. From a tin can cut 4 blades for the water wheel. 2) Push the smaller end into the slits. 3) Make a hole with a nail in the exact center of the lid and the bottom of the film container. 4) Push the coat hanger wire through the holes to make an axle for the wheel. 5) Cut off the top of the pop bottle and make two holes at the opposite ends, about 4 cm from the top. These holes accept the axle - coat hanger wire. 6) Wind a short piece of wire around the end of the axle just outside the bottle so that it will not move out. 7) Make a spool out of the longer end of the axle using two pieces of cardboard glued on it. 8) Tie a string about a metre long to the spool and hang a "bucket", the cap of the aerosol can. 9) Pour a stream of water on the blades of the wheel and the wheel turns. 10) The string winds itself onto the spool and the "bucket" is lifted up.

A graphometer is a surveying instrument. It is used to measure angles.

Describe the specific safety precautions to be taken when carrying out fault diagnosis of the specific piece of equipment

The purpose of hidden lines is to represent edges that are not directly visible. The purpose of center lines is to represent the axes of circular features.

In a rack and pinion system, a bull gear is typically the last reduction gear in the geartrain. It transmits torque to an output pinion which is in contact with a rack.

Production rate of injection molding machine depends upon cycle time (total time that machine takes to produce a product in one cycle) and the number of cavities. For calculating cycle time, you must consider time for each phase that machine takes in one cycle. That phases are:

1. Mold closing / clamp
2. Filling
3. Pack and hold
4. Cooling and Recovery (40-60% )
5. Mold Open
6. Ejection Add time taken by each phase. For example, this time is 15 seconds and the number of cavities are 2. So the production rate is 2 finished product per 15 seconds. You can increase your production by decreasing the cycle time. You can decrease cycle time by following some points:
7. Keep wall thickness to minimum required for your product
8. Ensure your machine is fine-tuned
9. Ensure proper cooling system, injection pressure and injection speed is applied.

The most common 1000 gallon oil storage tank is a flat-ended cylinder 48 inches in diameter. A gallon is 231 cubic inches. The area of a 48-inch circle (radius = 24") is pi*24² = 1809.56 in². 231,000 / 1809.56 = 127.7", or just under 10'-8". The nominal length is 10.5 feet.

car engine

This is Speroidal Graphite iron casting.

Mechanical Properties required are as followed,

Tensile Strength ( MPa ) - Min. 500

Min. 0.2 % Proof Stress ( MPa) - Min. 320

Elongation ( % ) - Min. 7

Brinell Hardness (BHN ) - 160-240

Predominant Constituent of Matrix - Ferrite + Pearlite.

Regards,

Sujit Doijad

09762225010

s.doijad@rediffmail.com

Eccentricity is the deflection in the shaft away from truly straight. The turbine shaft when not turning will settle into a bowed shape (measured in thousandths of an inch), this is the deflection from straight. Large turbines are placed on turning gears as they are cooled or warmed up to minimize this deflection. As a turbine is started this eccentricity produces vibration as the deflection changes rotational position, if the turbine is started up too quickly this deflection will increase as a result of inertia trying to deflect the weight of the deflected shaft outward. Eventually the deflection, as a result of rolling the turbine up slowly, will straighten to the true center of the turbine shaft.

The advantages of the reciprocating compressors is that it is easier to install and is very simple to install. The disadvantage of the reciprocating compressor is the high cost of maintaining it because of the many moving parts.

Steam Turbine Turning Gear - Turning gear is utilized on turbines to reduce eccentricity or out of round of the rotor. When a rotor is standing still it has a tendency to sag due to its weight.

While running a turning gear which is a separate motor that turns the rotor slowly 10-50 RPM through a clutching mechanism. This rotation keeps the rotor in balnace.

It is very important to run the turning gear on shutdowns and start ups. The time required to run is dependent on the size of your unit.

Typically the turning gear must be on for 12-36 hours for small to large steam turbins after shutdown and 2-16 hours prior to a turbine start.

If a turning gear is not utilized the rotor will become eccentric and may cause vibration up to wiping rotating parts with the stationary parts causing catastrophic failure.

Steamengineer @ Gmail

7.7-8.03 (×1000 kg/m3) at 25 degrees Celsius.

In some cases, depending on the size and weight of tubular steel pipe vs the same or similar size solid steel bar, the tubular steel might be stronger. The molecular structure of the solid steel have the molecules stacked close together, any shock or stress will compress the molecules closer together with no place to go unless the steel bends or breaks. A steel tube has the hollow area which allows shock or stress to be released, it will be less likely to bend or break. It also depends on what the application is tubular steel will definitely be lighter in weight, can be filled, run wiring or plastic tubing through it. Cost is cheaper.

can remove hydrocarbon safely

About 8W/m2K for MS Steel against air convection

That depends on how the glass is fabricated and finished and the environment it is in, and the type of glass. In general, and approximately,

For perfect glass fibers, strength is 500,000 psi (3500 MPa).

For polished glass windows, in air, strength is 7000psi (50MPa)

For scratched glass, 100 micron deep scratch, it is 2500 psi (20 MPa)

For scratched glass in high humidity for several years it is 1000 psi ( 7 Mpa)

one source put it at 2 per every 1 person, another said what's a car

Maths & physics, that's the two main ones

Length of courses are based on experience and qualifications.

Degree courses are 4 years.

HNC 1 year - gain entry to 1st or 2nd year in a degree course

HND 2 year - gain entry to 2nd or 3rd year of a degree course

Basically looking at a minimum of 4 years study

hope this helps

air pressure

Actually its answer is very easy and very simple where as you know that all things made by soem chemistry formula where you know that a metal is combinations of amny metals and also some chemicals which are used in different technology also made by combinations of different chemicals so the role of chemistry is much more important in each and every technology even in civil technology,,,, i think there will be no more capacity to understand you about it,,,