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Components of rotating anode x ray tube?
rotating anode 1)During a operation large shaped disc tungsten anode rotate at speed 3000 t0 9000rpm(resolution per minute). 2)A motive force to rotate the anode is given by induction motor.therefore windings of which is housed outside the tube. 3)a design element help to limit power density delivered on the physical focal spot while making a small effective focal spot. 4)with rotating anode,heat is produced during exposure is spread over the large area of anode.thereby increases the heating loading capacity of the tube and allowing high power level are used as a result which produces the x radiation. 5) by increasing the anode voltage x rays which produces the shortest wavelength this is used to therpeutic. by decresing the anode current which produces the longest wavelength this is used for diagnostic process.
Why are LEDs different lengths?
To make it easier to see which is positive - anode, and which is negative - cathode. You need to know that, because the LED will only light if the positive and negative terminals of the battery are connected to the correct sides of the LED.
What would happen if you charge a 1.5 volt battery on a varying DC input in the range of 12-40 volts?
Batteries have internal resistances built in them, a guideline that is carefully studied in battery manufacturing. Higher voltage over resistance implies higher power and hence heat build-up, huge build-up will weaken the battery structure by volume expansion. The aggressive charging/discharging will cause the metal ions to deform the cathode/anode in the battery respectively. The motion of ions in the battery, cathode to anode or visa versa, is intrinsic to the charging and discharging operation. If the cathode or anode is deformed, the surface area formed by the deposited de-ionised particle will yield less than intended due to abnormalities in the formation. Charging and discharging again at normal operation modes will not undo the damage done to the structure of anode or cathode. Do not charge any battery type at more 10-15% voltage than you can draw from. Charging at such high voltage compared to Battery voltage would cause battery explosion. The duration of improper charging before battery explosion is dependent on how much pressure is built up in the battery from heat generated by internal resistance and quality of casing that is housing the battery nodes and chemicals. Eventually, metallic gas will seep out of the battery causing acidic skin burns and metallic gas poisoning. Injury from flying battery fragments is possible at such insane charging modes.
Why does a plateau exist in the Geiger-Muller region?
In a Geiger-Müller (GM) tube, there is a central anode and a "case" that is the cathode. A voltage is applied across these two elements, and an ionizing particle passing through the GM tube will cause current flow. But how much? Let's step through things and check it out. At low voltage, any electrons released by the cathode will eventually be collected by the anode, but there is no appreciable "current" per se in this, the ionization region. Things are still pretty "tame" in the GM tube through this range of voltages. By applying more voltage, an ionizing event will generate more current flow, and this current flow will be proportional to the voltage in what is (naturally) the proportional region. And as we apply more voltage, gas amplification, or Townsend avalanche, which appeared at the beginning of this region, is increasing across the area of the anode. As we apply even more voltage, it will only make for limited additional current flow in an ionizing event because the limits of the geometry of the GM tube and of the gas media to ionize and "conduct more" with the increasing voltage are being reached. This is the limited-proportional region. As voltage is increased even more, we enter the Geiger-Müller region. In this region, the current avalanche in an ionizing event is so great that is causes a "shield" of positive ions around the anode. The high current "sucks up" all the electrons and blankets the anode in a positive field that prevents additional current flow even with an increase in voltage. This is the Geiger plateau. It's the operating region where additional differential voltage will not cause higher current flow in an ionizing event.
What are parts of Rotating anode dual focus x-ray tube?
A cathode ray tube will emit electrons boiled off a heater located in the cathode area. As electrons leave the cathode traveling to a more positive potential located at the plate a grid of negative potential can deflect, impede these electrons flow.
What happens when smaller area is provided to cathode than anode?
When the area provided to the cathode is smaller than the anode the electrons will still flow.
Which has the worst galvanic reaction with aluminium -stainless steel or monel?
It all depends on whether you have the larger area as an anode or cathode. If you have a monel majority - anode and a smaller aluminium cathode the corrosion will be severe. It will be negligable over several years the other way round.
In electro deposition current density of bath means current per unit area of anode or cathode?
In electro deposition current density of bath means current per unit area of cathode.in which proportion rate depends on cathode to anode area?
Electrons consist of of ?
Yes , X-rays consist of first moving electrons ,because high voltage between cathode and anode causes the electrons to accelerate toward the anode,When the electrons strike the anode's target area, X-rays are emitted.
Explain the working of cathode ray tube?
An evacuated tube, with electrodes at one end and a screen area at the other. The inside area of the screen is coated with a phosphor material. The end of the tube nearest the screen is coated with a conductive paint and an outside Anode connection provided. At the electrode end a Cathode wire is heated by a heater coil. Further up the neck of the tube is an anode mesh. A high negative voltage is applied to the anode connection near the screen. A positive voltage is applied to the Cathode. A negative voltage on the first anode causes electron released from the heated cathode to accelerate up the tube towards the screen. The screen anode causes further acceleration causing electrons to hit the inside of the phosphor coated screen. The electrons hitting the screen causes the phosphor coating to glow. The stream of electrons can be deflected using electromagnets arranged around the neck of the tube. The intensity of the flow of electrons can be controlled by a grid between the cathode and first anode.
X-rays consist of fast-moving electrons?
Yes , X-rays consist of first moving electrons ,because high voltage between cathode and anode causes the electrons to accelerate toward the anode,When the electrons strike the anode's target area, X-rays are emitted.
How does gas pressure on the electrode and or electrolyte affect voltage and amperage or current in a gas electrode especially oxygen?
If your talking about pressure electrolysis, you pressurize the whole cell containing the anode and cathode. In the case of electrolyzing water, if you use a standard pressure cell there will be oxygen gas at one cathode and hydrogen gas at the other anode. Depending on current the gas bubbles at both poles can be quite active and large quantities of gas bubbles. If you do the same operation under pressure electrolysis the rising pressure in the cell causes the gas bubbles to shrink by a propotionate amount. Double the pressure and you shrink the bubbles by half. With the gas bubbles being smaller more current can be applied to the cell because the smaller bubbles give more surface area on the anode and cathode for the electricity to reach. With standard pressure cells the bubble activity around the electrodes is intense enough that the bubbles actually shield the electrodes from the electrolytic solution, and the current can't travel thru the gas bubbles to get to the electrodes. So you can only apply so much current. The higher you raise the pressure the smaller the gas bubbles get and the more current you can run thru the electrolyzer .
Who discover anode rays?
Dr. Eugen Goldstein was a German physicist who was an early researcher in the area of discharge tubes and atoms, and has also been credited with the discovery of the proton. Goldstein worked at both the Berlin Observatory and the Potsdam Observatory during his career. While conducting research using Crookes tubes, Dr. Goldstein discovered that the tubes emitted light and that magnetic fields had an influence on that light. He eventually named these light rays Cathode rays. This research was the foundation of the eventual discovery of anode rays.
What is focusing cup?
Filament Cup : A small target for electron bombardment on the anode is essential. (image geometrical un-sharpness). Unless steps are taken, the random thermally induced velocities and mutual repulsion of the electrons leaving the cathode will cause a broad beam to strike the anode. Therefore the filament is surrounded by a metal cup, kept at the same potential as the filament. The cup provides an electric field which causes a focusing action on the electrons to produce the desired small target area on the anode
Components of rotating anode x ray tube?
rotating anode 1)During a operation large shaped disc tungsten anode rotate at speed 3000 t0 9000rpm(resolution per minute). 2)A motive force to rotate the anode is given by induction motor.therefore windings of which is housed outside the tube. 3)a design element help to limit power density delivered on the physical focal spot while making a small effective focal spot. 4)with rotating anode,heat is produced during exposure is spread over the large area of anode.thereby increases the heating loading capacity of the tube and allowing high power level are used as a result which produces the x radiation. 5) by increasing the anode voltage x rays which produces the shortest wavelength this is used to therpeutic. by decresing the anode current which produces the longest wavelength this is used for diagnostic process.
How do you calculate zinc anode quantity in water ballast tank?
current= area of surface x current density required / 1000 , weight of zinc anode = current x life of anode (4yrs) x 8766 / 780
What do you measure the current using?
Current (I) is the motion of charge from one location to another. I = dQ/dt, the net charge flowing through an area per unit time. Current is related to potential difference and resistance by the following equation. I = V/R To measure current for practical uses, obtain a good ammeter. Ammeters will measure the current passing through a given circuit.
