'why bottom of cold drink bottle is curved'?
Pressure in soda bottles is high, so to keep the bottom from exploding out the manufacturers curve them inward. It's the same physics as arches that hold up walls.
When to change a rack and pinion?
Change a rack and pinion when they begin to show signs of wear; check on them every few months. Modern racks and pinions last over three years.
How do you fix a 4 stroke dirt bike engine?
It would depend on what was wrong with the engine. More details are required.
What is the design procedure of screw jack?
First step: Find the core diameter of the screw second step: Find the torque required for lifting the screw
The wiggler body holds the selected probe. Loosen the knurled nut and snap the ball on the end of the probe into the body. Tighten the knurled nut so the probe is not loose, but can still move. When using the dial indicator probe, tighten it firmly. Put the shank of the body into the chuck, end mill holder or collet on your mill or drill press. Use the point probe to find a point on a work piece. This is the probe you use to locate scribed lines on a work piece under the drill or mill chuck. Center the probe by turning on the machine to about 1000 RPM. Use a wooden pencil or other object to press on the side of the probe near the point until it turns true, with no wobble. When you press too hard you will find out why this device is called a wiggler! Once you have the probe centered, turn off the power and center the mark on the work piece under the point of the probe. Use the disk probe to find the edge of a work piece. The disk on the end of this probe is 0.100” in diameter. Center the probe by turning on the machine to about 1000 RPM. Use a wooden pencil or other object to press on the side of the probe near the point until it turns true, with no wobble. Leave the power on as you move the side of the work piece into the tip of the probe. When the probe touches the side of the work piece it will start to wobble. The center of the spindle is 0.050” from the edge of the work. Use the ball probe to find the center of existing holes. Center the probe by turning on the machine to about 1000 RPM. Use a wooden pencil or other object to press on the side of the probe near the point until it turns true, with no wobble. Once you have the probe centered, turn off the power and center the existing hole in the work piece under the ball of the probe. This probe can also be used to find the edge of a work piece. The smaller ball on this probe is 0.250” in diameter, so when it touches the side of the work piece, the center of the spindle is 0.125” from the edge of the work. Use the indicator probe to mount a dial test indicator. Use a dovetail clamp or a body clamp to attach the dial test indicator to the indicator probe. You can use this to check the alignment of a vise on your mill.
All bearings and bushings have a basic stiffness. When you apply load on the shaft the shaft will move, and so the stiffnes can be calculated from the ratio of the applied force to the absolute value of movement.
An axial flow pump operates centrifugally in design. The fluid is pushed outward from the center or axis of the pump.
a live load bridge is a truck or a weight that after the bridge is made then you put the weight on the bridge and see if it holds!
What size ac unit is needed for 3200 square feet?
It is recommended a four Tom air-conditioner is needed to cool a 3200 square foot home. The size of the air conditioner is dependent upon several different factors.
What is the use of resistance box?
The use of a resistance box or a "Decade Box" is to help calibrate instruments used to measure electrical values such as Voltage, Current, and Resistance. Without them you would not have a known value of resistance to use as a set point.
HIC stands for High Integrity Container, one that will not rust out. You can see an example of them when they change out gas station storage tanks. The old ones are made of mettle, the new ones are made of fiber glass.
What are the benefits of normalizing on steel?
After steel is shaped by forging, machining or casting inherent stresses can weaken the article. Normalizing reduces these weaknesses by re-aligning the 'grain' of the steel so that it follows the new shape of the article manufactured.
Normalizing steel results in it being strengthened and more ductile. the results in a grain structure of fine pearlite with excess of ferrite or cementite. resulting material is soft : degree of softness depends on the ambient conditions of cooling
What personality type are best suited for engineers?
Answer I'm not a psycologist but engineers are usually logical, conservative and focus on details.
How Inverted flight of helicopter is achieved?
Upside-down helicopters fall until they turn back over. Sometimes they don't turn back over, and they crash.
What is the tachometer princibal?
THERE ARE TWO TYPES OF TACHOMETER. 1.D.C. TACHOMETER 2.A.C. TACHOMETER ALSO DIGITAL TACHOMETERS CAN BE CONSTRUCTED using various principles..... D.C. TACHOMETER its construction is very similar to a D.c. generator. it works on the principle of generation of emf wen a rotating conductor cuts the magnetic flux......when magnetic flux is constant then the emf produce is directly proportional to the speed of the armature that is coupled to the shaft of motor. A.C. tachometer its construction is similar to a two phase servo motor.... and works conversly of it....
Mechanism of tiptronic gear transmission?
The mechanism of the tiptronic gear transmission is rotation. The tiptronic gears are usually an automatic transmission that allows the driver to control the gears like it is done in a manual transmission.
How are synchros used in error detection?
Control systems are synchros which are used in error detection. They provide a voltage to be converted to torque through an amplifying method.
Difference between compressor and pump rotor?
The only one difference in b/w compressor and pump rotor is impeller shroud width.Fluid is incompressible so impeller shroud width is not change and gas is compressible so impellers are tends to thin in width to the discharge side.