The solid-state relay is a device that has become increasingly popular for ____.

a. heating applications
b. DC applications
c. switching applications
d. blending applications


c. switching applications

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A term used to describe flow in a heat exchanger where tube-side flow and shell-side flow go in the same directions.

a. cross flow b. horizontal flow c. parallel flow d. counter flow

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If 12 volts are being applied to a resistance of 3 ohms, ________ amperes will flow

A) 36 B) 12 C) 4 D) 23

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What type of screws are used on electrical panels?

A) Round-tipped sheet-metal screws B) Wood screws C) Nails D) Self-tapping sheet-metal screws

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What is the duty cycle of a digital pulse train where the pulse width is 10 ms and the period of the waveform is 90 ms?

A) 90% B) 10% C) 11.1% D) 9%

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