Describe the power supply to the processor of the Jensen Electric Co. fire alarm system.
What will be an ideal response?
The power equipment of the processor is 24 volts dc, which is provided by an uninterruptible power supply. The uninterruptible power supply produces a regulated 24 volts dc from a 120-volt ac 60-hertz supply line. Two 12-volt lead acid storage batteries are contained inside the power supply. If the incoming ac power should fail, the lead acid batteries continue to provide power to the system. This ensures that control power to critical systems is maintained during a power failure.
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Cyclone separators are used in _______________reactors to separate catalyst from gas streams.
a. tubular b. fixed bed c. fluidized bed d. stirred tank
Welding stresses occur because as metal is heated and cooled, it expands and contracts.
Answer the following statement true (T) or false (F)
El/la _____ se usa para conectar empalmes, esquinas y divisiones que están en ángulo recto respecto a un muro.
a. cabezal b. travesaño superior c. travesaño superior doble d. zapata
Transferring genetic material between cells is known as __________ gene transfer
a. vertical c. adjacent b. horizontal d. helix