As a note of caution, one must always turn off the power before connecting a(n) ____ to a circuit.
A. ammeter
B. voltmeter
C. ohmmeter
D. analog meter
Answer: A
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Which of the following organizational structural changes is NOT caused by information
systems?
a. A separate unit is created to oversee the information system. b. A new position of chief information officer is created. c. More middle managers are needed. d. The span of management is enlarged. e. All of these are structural changes caused by information systems.
Carry the answer to three decimal places. A power company charges a city $1.2167 per street lamp per month. There are 1,125 street lamps supplied with current. What is the city's power bill per year for the street lamps?
Fill in the blank(s) with the appropriate word(s).
What is the heat output of an electric furnace rated at 15 kilowatts on 240 volts?
A) The heat output cannot be calculated using the kilowatt output. B) 15 kW × 240 = 36,000 BTU/hr C) 15 kW × 3,412 = 51,180 BTU/hr D) 15 kW × 1,000 = 15,000 BTU/h
In a pure resistive circuit, the true power is the same as the apparent power, so the power factor is ____.
A. zero B. one C. two D. three