The purpose of a standard control transformer is to:
A) Increase line voltage from 208 V to 230 V.
B) Control the amount of power consumed by electric motors.
C) Reduce line voltage to 24 V for HVACR control systems.
D) Regulate the power supply voltage in an air conditioner.
C
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What will be an ideal response?
Most of the noise produced in a busy restaurant or dining hall is
A) airborne sound. B) structure -borne sound.
Why is electricity distributed using extremely high voltages?
A) For safety because the insulation on the electrical distribution lines is not as effective at lower voltages. B) Higher voltages are easier to generate than lower voltages, so distributing them as a high voltage reduces equipment and saves money. C) To keep current as low as possible and reduce loss through the lines. D) High voltage electricity travels faster than lower voltage electricity and can get from one side of the country to the other in seconds.
The function of impedance is to assist the signal as it travels down a medium
Indicate whether the statement is true or false