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Assignment Questions - 14179_273
Assignment Questions - 14179_275

Neets Module 07-Introduction to Solid-State Devices and Power Supplies
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22 3-30.   What is the main difference between the TRIAC and the SCR?   1.    The SCR requires a higher input voltage than the TRIAC   2.    The TRIAC requires a higher input voltage than the SCR   3.    The TRIAC controls and conducts current during both alternations of an ac cycle, while the SCR controls and conducts current during only one alternation   4.    The SCR controls and conducts current during both alternations of an ac cycle, while the TRIAC controls and conducts currents during only one alternation 3-31.   What name is given to a group of devices that either produce light or use light in their operation?   1.    Optoelectronic   2.    Ophthalmology   3.    Optokenetic   4.    Optometry 3-32.   In optoelectronic devices, what do the initials LED stand for?   1.    Low-emitting diode   2.    Low-emitting device   3.    Light-emitting diode   4.    Light-emitting device 3-33.   What determines the color of light emitted by an LED?   1.    The type of incandescent bulb used   2.    The type of material used   3.    The type of bias used   4.    The type of fluorescent bulb used 3-34.   What is the standard schematic symbol used to designate LEDs?   1.    An incandescent bulb with arrows pointing toward the light   2.    An incandescent bulb with arrows pointing away from the light   3.    A diode with two arrows pointing toward the cathode   4.    A diode with two arrows pointing away from the cathode 3-35.   The circuit symbols for all optoelectronic devices have arrows pointing either toward them or away from them. When the arrows point toward the symbol, what does this indicate? 1.    The device produces light   2.    The device uses light   3.    The device requires current flow   4.    The device produces current flow THIS SPACE LEFT BLANK INTENTIONALLY.






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