Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 28.4 mA 24.2 mA 68.4 mA 34.4 mA None of these 28.4 mA 24.2 mA 68.4 mA 34.4 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91? None of these 1000 W 100 W 20 W 200 W None of these 1000 W 100 W 20 W 200 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A low-pass filter: None of these passes higher-frequency signals and reduces lower-frequency signals has no effect on ac signals passes lower-frequency signals and reduces higher-frequency signals reduces the level of all frequencies by a significant amount None of these passes higher-frequency signals and reduces lower-frequency signals has no effect on ac signals passes lower-frequency signals and reduces higher-frequency signals reduces the level of all frequencies by a significant amount ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz? 690 Ohm None of these 1590 Ohm less than 1 Ohm 312 Ohm 690 Ohm None of these 1590 Ohm less than 1 Ohm 312 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be: No more than 10% less than the primary current Twice the primary current One-half the primary current Same as the primary current None of these No more than 10% less than the primary current Twice the primary current One-half the primary current Same as the primary current None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The dielectric constant of a material is a measure of: None of these the amount of opposition to the current flow the amount of voltage it can withstand before breaking down how well the material concentrates magnetic lines of force how well the material concentrates electrostatic lines of force None of these the amount of opposition to the current flow the amount of voltage it can withstand before breaking down how well the material concentrates magnetic lines of force how well the material concentrates electrostatic lines of force ANSWER DOWNLOAD EXAMIANS APP
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