When operating below its resonant frequency, a series RLC circuit has the characteristics of a: series RL circuit None of these series RLC circuit operated above its resonant frequency purely resistive circuit series RC circuit TRUE ANSWER : ? YOUR ANSWER : ?
What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Solar energy Electronical energy None of these Chemical energy Mechanical energy TRUE ANSWER : ? YOUR ANSWER : ?
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? None of these 34.4 mA 28.4 mA 68.4 mA 24.2 mA TRUE ANSWER : ? YOUR ANSWER : ?
The total impedance of a series RLC circuit: None of these always increases as the applied frequency increases is minimum at the resonant frequency is maximum at the resonant frequency always decreases as the applied frequency increases TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? None of these Reluctance Number of lines of force Magnetomotive force Flux density TRUE ANSWER : ? YOUR ANSWER : ?
How many protons does the nucleus of a silicon atom contain? 14 None of these 4 29 48 TRUE ANSWER : ? YOUR ANSWER : ?
A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff? 10 k Ohm 1 k Ohm 20 k Ohm None of these 2 k Ohm TRUE ANSWER : ? YOUR ANSWER : ?
What is the phase shift between total current and voltage, if 100 ohm resistor connected in parallel with an inductor that has a reactance of 200W? 90 degree None of these 0 degree 180 degree 26.6 degree TRUE ANSWER : ? YOUR ANSWER : ?
When a parallel RLC circuit is operating at its resonant frequency: inductive reactance is equal to the capacitive reactance capacitive reactance is greater than the inductive reactance None of these the difference between inductive and capacitive reactance is equal to the resistance inductive reactance is greater than the capacitive reactance TRUE ANSWER : ? YOUR ANSWER : ?
What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? Less than 1 Ohm 444 Ohm 100 Ohm None of these 628 Ohm TRUE ANSWER : ? YOUR ANSWER : ?