Extra Class

What current flows equally on all conductors of an unshielded multiconductor cable?

What undesirable effect can occur when using a noise blanker?

Which of the following can create intermittent loud roaring or buzzing AC line interference?

What could be the cause of local AM broadcast band signals combining to generate spurious signals on the MF or HF bands?

What causes interference received as a series of carriers at regular intervals across a wide frequency range?

Where should a station AC surge protector be installed?

What is the purpose of a single point ground panel?

What can cause the voltage across reactances in a series RLC circuit to be higher than the voltage applied to the entire circuit?

What is the resonant frequency of an RLC circuit if R is 22 ohms, L is 50 microhenries, and C is 40 picofarads?

What is the magnitude of the impedance of a series RLC circuit at resonance?

What is the magnitude of the impedance of a parallel RLC circuit at resonance?

What is the result of increasing the Q of an impedance-matching circuit?

What is the magnitude of the circulating current within the components of a parallel LC circuit at resonance?

What is the magnitude of the current at the input of a parallel RLC circuit at resonance?

What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?

How is the Q of an RLC parallel resonant circuit calculated?

What is the resonant frequency of an RLC circuit if R is 33 ohms, L is 50 microhenries, and C is 10 picofarads?

What is the half-power bandwidth of a resonant circuit that has a resonant frequency of 7.1 MHz and a Q of 150?

What is the half-power bandwidth of a resonant circuit that has a resonant frequency of 3.7 MHz and a Q of 118?

What is an effect of increasing Q in a series resonant circuit?