El tiempo de espera para el funcionamiento de los sistemas de alarma con energía secundaria se define en:

a. NFPA 1.
b. NFPA 70®.
c. NFPA 72®.
d. NFPA 101®.


c. NFPA 72®.

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An external power source for condenser microphones is called ________.

A. A Battery B. A generator C. Phantom Power D. A Mixer

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Some bearings will have a cage as part of their assembly that will:

a. help distribute oil evenly b. keep dirt away from the rollers c. help preload the bearing d. keep the rollers or balls separated

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Slip compensation is used to maintain a constant motor __________.

A. torque B. speed

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What is a compound gearset?

What will be an ideal response?

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