How many BTUs will a 10-kW heater produce if operated for an hour?
A) (10 kW/3,410 ) × 60 = 176 BTU B) 10 kW 1 hour = 10,000 BTU
C) 10 kW/3,410 BTU = 2.93 BTU D) 10 kW × 1 hour × 3,410 BTU = 34,100 BTU
D
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¿Qué tipo de cabeza de tornillo se utiliza en los atornilladores eléctricos?
a. Hexagonal b. Ranurada c. Allen d. Phillips
Answer the following statement(s) true (T) or false (F)
1.When using three-wire Type NM cable the white insulated wire is sometimes used as a traveler conductor for three-way and four-way switching and is required to be reidentified as an ungrounded conductor. 2.Like a four-way switch, a double-pole switch has four terminal screws and the toggle has “On” and “Off” written on it. 3.Like single-pole toggle switches, single-pole dimmer switches always come from the factory with screw terminals. 4.Motor loads not exceeding 80% of the ampere rating of the switch at its rated voltage are permitted to be controlled by alternating current general-use snap switches. 5.A double-pole switch can be used to control two 120-volt circuits.
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.
What is hue?
A) The basic color, such as red, blue, or red-blue. B) The shade of color, such as light or dark red. C) The intensity or degree of color saturation.