|
1) In a parallel LC circuit, if the input signal frequency is increased above resonant frequency then _______________? a. XL increases and XC decreases b. XL decreases and XC increases c. Both XL and XC increase d. Both XL and XC decrease
|
||||
|
2) At parallel resonance, the net reactive component circuit current is _______________? a. Capacitive b. Zero c. Inductive d. None of the above
|
||||
|
3) A resonant circuit contains ____________elements? a. R and L only b. R and C only c. Only R d. L and C
|
||||
|
4) At parallel resonance, the line current is_______________? a. Minimum b. Maximum c. Quite large d. None of the above
|
||||
|
5) A tuned amplifier uses__________load? a. Resistive b. Capacitive c. LC tank d. Inductive
|
||||
|
6) At series resonance, voltage across L is____________voltage across C? a. Equal to but opposite in phase to b. Equal to but in phase with c. Greater than but in phase with d. Less than but in phase with
|
||||
|
7) A tuned amplifier is used in ___________ applications? a. Radio frequency b. Low frequency c. Audio frequency d. None of the above
|
||||
|
8) The voltage gain of a tuned amplifier is____________at resonant frequency a. Minimum b. Maximum c. Half-way between maximum and minimum d. Zero
|
||||
|
9) At series resonance, the circuit offers____________ impedance? a. Zero b. Maximum c. Minimum d. None of the above
|
||||
|
10) A tuned amplifier is generally operated in ____________operation? a. Class A b. Class C c. Class B d. None of the above
|
||||
