Mechanical Engineering

To stop the release of fire suppression when in release mode. You have 30 seconds to press and hold this button. If you release the button in will discharge. It is a type 2 abort. Also know as a dead-mans abort.

what is the US equivalent of ETG100 and ETG 80 and PR80

ASTM A792 is a standard developed by ASTM International. The full title is ASTM A792/A792M-08 Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process. A792 covers 55% aluminum-zinc alloy-coated steel sheets in coils and cut lengths for applications requiring corrosion resistance or heat resistance or both. For more information, please visit www.astm.org.

if we use concentric reducer at suction of pipe ,due to high turbulence flow of fluid ,some vapour pressure generate which generate bad effects on impeller of pump ,which decrease pump efficiency , so to avoid this problem the eccentric reducer's use in pump suction

Clearances between the cotter and slots in the rod end and socket allows the driven cotter to draw together the two parts of the joint until the socket end comes in contact with the cotter on the rod end.

No. The pressure drop remains the same. The only thing that could led to a smaller pressure drop after 1 (or more) year, is the internal surface friction coefficient. But this coefficient does not change in a measurable way. Perhaps small particles are re-arranged inside the pipe, but the coefficient remains the same. So does pressure drop.

During the return stroke it does not remove any material, it is an idle stroke so to improve the cutting efficiency it will move faster during the return stroke.

Pradip Kotak.

Unit plot plans are generally defined by imaginary lines called battery limits. Battery limits are used to establish a unit's boundaries. Unit plot plans show the location of all the buildings, equipment, pipe racks, and other items of importance in the unit. True north and plant north are also shown. The purpose of this drawing is not to show detail, but rather, the arrangement of various components to be erected in the unit.

its a steel material used in pipes

actually there is no difference in beta phase and alpha phase when we talk about crystal structure of iron.

beta phase has the same structure as the alpha phase. the olny difference is the magnetic properties which are absent in beta phase due to the expanded lattice parameter.

post weld heat treatment is done on the weld areas after welding, to remove the residual stress present in the welded part formed during the welding process, it prevents to cause brittle fracture in a metal

is that possible to be a IT professional after complete B-Tech in mechanical engineering?

A CNC operator, as the name suggests operates a CNC (computer numerical control) machine, usually this includes loading and unloading workpieces, checking workpieces, setting program datums, setting up jigs and fixtures, replacing worn or broken tooling, cleaning swarf from the machine and basic machine maintenance. Some operators also do programming although this is usually limited to altering a program to suit the tools being used; for example altering a program to give the correct drill depth after changing the drill. The exact duties of a CNC operator varies from one machine shop to another. A CNC programmer actually writes the program that runs the machine although this job is increasingly done by software.

determine the units of a caterpillar's speed if you measure the distance the caterpillar travels in centimeters and the time it takes to travels this distance in minute

For big buildings like hospitals, hotels, airports, industrial buildings, and residential apartments the centralised air conditioning system is used.

for GASKETS

Triple duty valves combine the features of a check valve, a throttling valve, and a shut-off valve, and are designed for installation on the discharge side of centrifugal pumps. The convertible body design allows the triple duty valve to be changed on-site from a straight configuration to an elbow configuration.

They prevent the end user from having to purchase many different types of valves separately, this saves money in materials and uses limited floor spacing.

As I recall , 3 full threads is minimum engagement length

state the legal time requirements for the retention of planned maintenance document

Sear stress are forces applied in opposition, producing a shearing or tearing force. Bearing stress is a load placed in one direction, such as the weight of a building bearing on the foundation.

The depth of impression must not be greater than the thickness of the test piece (material cannot be too thin). It cannot measure on cylindrical shaped objects, and the size of ball indentor used will give different readings.

First, if the key is only slightly jammed, wiggling and jiggling it might work it loose. However, I am assuming that if you are asking this question, the key must be good and jammed. If that is the case, the only way I know of is the following; however, it involves destroying the key and therefore, you should be prepared to obtain a new key from a locksmith.

First, hopefully the door is unlocked, or open. If it is closed and locked, you will have to try the following. Remove the hinge pins from the door by tapping them out with a hammer and a centre punch, nail, or other pointed metal instrument. Once the hinge pins are out, try pulling the door away from the frame from the hinge side. You should then be able to remove the door from the frame even if the deadbolt is locked. (Note: This assumes you are on the side of the door where the hinge pins are visible. If not, you will have to access the other side of the door via a window into the room. Good luck!)

Once you have gotten the door open by these means (if necessary), remove the doorknob, then the escutcheon plates (face plates with the keyhole in them). This will expose the hole drilled in the door for the keyhole, and the lock case itself. Now take a pair of locking pliers ("Vise Grips") and grab onto the shank of the key as close to the lock case as possible. Work the pliers back and forth until the key breaks off. Hopefully, the break will occur as close to the lock case as possible.

Now, remove the screws from the edge of the door which hold the lock case in place. You should now be able to slide the lock case out of the door. Unscrew the cover from the lock assembly and extract the broken piece of key, being careful not to disturb any of the tumblers (levers), springs, etc.

Good Luck!

Only use calibration control in unloaded condition of the torque transducer. Cal control output is approximately equal to transducer full scale output. Exact value is noted on calibration certificate.

for disasion

The Cam