What is the result of skin effect?

- As frequency increases, RF current flows in a thinner layer of the conductor, closer to the surface
- As frequency decreases, RF current flows in a thinner layer of the conductor, closer to the surface
- Thermal effects on the surface of the conductor increase the impedance
- Thermal effects on the surface of the conductor decrease the impedance

Why is it important to keep lead lengths short for components used in circuits for VHF and above?

- To increase the thermal time constant
- To avoid unwanted inductive reactance
- To maintain component lifetime
- All these choices are correct

What is microstrip?

- Lightweight transmission line made of common zip cord
- Miniature coax used for low power applications
- Short lengths of coax mounted on printed circuit boards to minimize time delay between microwave circuits
- Precision printed circuit conductors above a ground plane that provide constant impedance interconnects at microwave frequencies

Why are short connections used at microwave frequencies?

- To increase neutralizing resistance
- To reduce phase shift along the connection
- To increase compensating capacitance
- To reduce noise figure

What is the power factor of an RL circuit having a 30-degree phase angle between the voltage and the current?

In what direction is the magnetic field oriented about a conductor in relation to the direction of electron flow?

- In the same direction as the current
- In a direction opposite to the current
- In all directions; omni-directional
- In a circle around the conductor

How many watts are consumed in a circuit having a power factor of 0.71 if the apparent power is 500VA?

How many watts are consumed in a circuit having a power factor of 0.6 if the input is 200VAC at 5 amperes?

What happens to reactive power in an AC circuit that has both ideal inductors and ideal capacitors?

- It is dissipated as heat in the circuit
- It is repeatedly exchanged between the associated magnetic and electric fields, but is not dissipated
- It is dissipated as kinetic energy in the circuit
- It is dissipated in the formation of inductive and capacitive fields

How can the true power be determined in an AC circuit where the voltage and current are out of phase?

- By multiplying the apparent power by the power factor
- By dividing the reactive power by the power factor
- By dividing the apparent power by the power factor
- By multiplying the reactive power by the power factor

What is the power factor of an RL circuit having a 60-degree phase angle between the voltage and the current?

How many watts are consumed in a circuit having a power factor of 0.2 if the input is 100 VAC at 4 amperes?

How many watts are consumed in a circuit consisting of a 100-ohm resistor in series with a 100-ohm inductive reactance drawing 1 ampere?

What is reactive power?

- Wattless, nonproductive power
- Power consumed in wire resistance in an inductor
- Power lost because of capacitor leakage
- Power consumed in circuit Q

What is the power factor of an RL circuit having a 45-degree phase angle between the voltage and the current?