Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the collector current base current None of these supply current emitter current collector current base current None of these supply current emitter current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.2 mA 13 mA 0.05 mA 3.75 mA None of these 3.2 mA 13 mA 0.05 mA 3.75 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 550 Ohm 400 Ohm 310 Ohm None of these 410 Ohm 550 Ohm 400 Ohm 310 Ohm None of these 410 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? None of these One - a negative terminal Four - two negative and two positive Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal None of these One - a negative terminal Four - two negative and two positive Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: cuts the total current by one-half None of these doubles the amount of total current has no effect on the total circuit current thrice the amount of total current cuts the total current by one-half None of these doubles the amount of total current has no effect on the total circuit current thrice the amount of total current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Holes act like: Negative charges Atoms Crystals Positive charges None of these Negative charges Atoms Crystals Positive charges None of these ANSWER DOWNLOAD EXAMIANS APP
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