In multistory buildings, areas to house the major electrical service entrance, sewer connections to the central sewage system, potable water, elevator operating equipment, and heating, cooling, and ventilation units are generally placed in a _____.
A. basement or subbasement
B. suspended ceiling
C. central service core
D. mechanical room
Answer: A
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Mechanically held relays and contactors are often used because _____.
a. they have fewer coils than electrically held devices b. they have more coils than electrically held devices c. they are quieter than electrically held devices d. they are more reliable than electrically held devices
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What is meant by "professional ethics?" in horticulture?
What will be an ideal response?
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A Wien-bridge oscillator produces a phase-shift of
A) 60° B) 180° C) 90° D) 0°
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What is the pressure within an electrical circuit called?
A. voltage B. amperage C. resistance D. wattage
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