Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 200 mA None of these 208 mA 7.8 mA 300 mA 200 mA None of these 208 mA 7.8 mA 300 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a direct statement of Ohm's law? None of these The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it The algebraic sum of currents entering and leaving a point is equal to zero The total resistance of a parallel circuit is less than the value of the smallest resistance The algebraic sum of voltages in a loop is equal to zero None of these The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it The algebraic sum of currents entering and leaving a point is equal to zero The total resistance of a parallel circuit is less than the value of the smallest resistance The algebraic sum of voltages in a loop is equal to zero ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductance of a series inductor circuit is: equal to the sum of the individual inductive-reactance values None of these equal to the source voltage divided by total current equal to the sum of the individual inductance values less than the value of the smallest inductor equal to the sum of the individual inductive-reactance values None of these equal to the source voltage divided by total current equal to the sum of the individual inductance values less than the value of the smallest inductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles To get the Thevenin voltage, you have to Short the voltage source Open the load resister Open the voltage source None of these Short the load resistor Short the voltage source Open the load resister Open the voltage source None of these Short the load resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance? P = IE I = P/E None of these P = E2/R P = I2R P = IE I = P/E None of these P = E2/R P = I2R ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the number of turns of wire in an inductor: reduces the value of inductance by one-fourth None of these reduces the value of inductance by one-half multiplies the value of inductance by two multiplies the value of inductance by four reduces the value of inductance by one-fourth None of these reduces the value of inductance by one-half multiplies the value of inductance by two multiplies the value of inductance by four ANSWER DOWNLOAD EXAMIANS APP
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