According to the NFPA, under what conditions is it acceptable to reset a fire alarm remotely when it is alarming?
a. It is acceptable if the panel has redundant confirmation.
b. It is acceptable if the panel has cellular phone access.
c. It is acceptable if the panel was manufactured after the 2005 NFPA code.
d. It is never acceptable to reset a fire alarm remotely if it is alarming
d. It is never acceptable to reset a fire alarm remotely if it is alarming
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A. charge air cooler B. precleaner C. positive air cleaner D. turbocharger
Para cambiar la elevación del conducto, salvar un obstáculo y volver a la elevación original, utilice un doblez:
a. continuo. b. de 90° c. de compensación. d. en la montura.
A six-pole synchronous motor is connected to an infinite bus of 480 V. The synchronous reactance of the motor is 0.5 ?. The field current is adjusted so that the equivalent field voltage Ef is 500 V. Calculate the following:
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A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B