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For a parallel plate capacitor is The poynting vector points everywhere radially outward of the volume between plates.

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How the pointing vector points be for a parallel plate capacitor which is being charged out?

For a parallel plate capacitor is The poynting vector points everywhere radially outward of the volume between plates.


How do you couple DC motor to alternator?

Shaft(rotor) of DC motor and Alternator(AC Generator) are alligned axially and radially to each other and connected.


What is a steam turbine?

It is an engine.A steam turbine is a heat engine that uses the expansion of steam passing through stationary nozzles and blades on a shaft to turn the shaft. The steam can move through the turbine axially (one end of shaft to the other end), radially (shaft to outer casing), or tangentially (around the outer edges of the turbine wheel). In an impulse turbine, the steam is expanded in nozzles and pushes the blades. In a reaction turbine the steam is expanded in the nozzles AND in the blades, the reaction of the expansion of the steam pushes away from the blades spinning the wheel in the process. The expansion of the steam is necessary to increase its velocity through the turbine.


How do you make a windmill?

A simple windmill consists of a vertical post with two rotating hubs - one vertical, one horizontal - attached at the top. Each hub is attached to the other, allowing the windmill to rotate horizontally and point into the wind. The vertical hub has slats attached radially to it, each one at a slight angle. As the wind passes over the slats, the Bernoulli principle (high pressure/low pressure) causes the vertical hub to rotate. By itself, a windmill is just decorative, but if big enough, it can be used to rotate grist stones in mills, run pumps, etc.


How do you do a motor and gear box alignment using two dial gauge?

Crankshaft flywheel flange runout.The crankshaft flywheel flange must be perpendicular to the axis of rotation of the crank with no permissible runout. Place a dial gauge on the bell housing and position the tip against the flywheel flange, parallel to the crank axis. (Perpendicular to the flange surface). Zero the gauge. Rotate the crank slowly by hand and watch for any movement. Any runout must be eliminated (because it will be compounded by the radius of the flywheel.)Flywheel friction face and rim face runout.With the flywheel now mounted to the crank, Place a dial gauge (magnetic clamp or mechanical clamp) to the bell housing and point the dial gauge perpendicular to the clutch friction face on the flywheel. Slowly rotate the crank and check for variation (runout). Maximum permissible runout is 0.01mm per 10mm of flywheel radius. Thus for a typical 300mm dia flywheel, max runout is 0.15mm (0.006"). (Runout here could cause rapid wear of the clutch splines or the driven plate breaking away from the splined hub due to continual flexing.)Reposition the dial gauge to point at a smooth piece of the flywheel near the starter gear teeth (rim), once again parallel to the direction of the crank. Slowly rotate the crank and note any runout or warp in the flywheel. The same maximum permissible runout applies here.Bellhousing (gearbox) runoutRepeat the exercise with the dial gauge clamped to the flywheel/clutch assembly pointing out (radially) to the bell housing locating the dial gauge point on the machined face of the bell housing that locates the gearbox. (At right angles to crank direction). Check for radial run out. Maximum permissible runout is 0.20mm or 0.008".