How does a diode operate?
What will be an ideal response?
The diode operates like an electric check valve in that it permits current to flow through it in only one direction. If the diode is to conduct current, it must be forward biased. The diode is forward biased only when a positive voltage is connected to the anode and a negative voltage is connected to the cathode. If the diode is reverse biased, the negative voltage connected to the anode and the positive voltage connected to the cathode, it will act like an open switch and no current will flow through the device.
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¿Para qué aplicación NO se utiliza el cemento aislante de alta temperatura?
a. Pegar lonas b. Aislar piezas c. Llenar uniones en bloques aislantes d. Aislar superficies planas
Cross-mating, breed crossing, or inbreeding produce most chickens for egg and meat production
Indicate whether the statement is true or false.
To square the end of a workpiece with a ground side, the surface clamped to the angle plate must be:
A) The side opposite the ground side B) The opposite end C) The ground side D) Either of the other two sides
Which of the following statements about centrifugal pumps is true?
a. With the valve in the discharge piping closed, the rotating impeller churns in the water causing the pressure at the outlet to rise to the shut-off head. b. If the discharge valve is gradually opened, allowing increasing flow of water, the pump head decreases. c. When the pump lifts water from a reservoir into a piping system; the resistance of flow at various rates of discharge is described by a system head curve. d. With increasing rate of discharge, pump efficiency rises to an optimum value and then slowly falls. e. All of the above.