Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 0.5 0.25 None of these 180 4 0.5 0.25 None of these 180 4 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point None of these off the load line down up nowhere None of these off the load line down up nowhere ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: doubles the amount of inductive reactance cuts the inductive reactance in half None of these has no effect on the inductive reactance multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance cuts the inductive reactance in half None of these has no effect on the inductive reactance multiplies the inductive reactance by 6.28 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: One-half the primary current Twice the primary current No more than 10% less than the primary current None of these Same as the primary current One-half the primary current Twice the primary current No more than 10% less than the primary current None of these Same as the primary current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage? 40 V 0 V None of these 60 V 36 V 40 V 0 V None of these 60 V 36 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding? 0.20833333333333 20 A None of these 50 A 0.20833333333333 20 A None of these 50 A ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS