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.Management Sciences
Category: Transistor Tuned Amplifiers
When either L or C is increased, the resonant frequency of LC circuit ____________?
A. Remains the same
B. Increases
C. Decreases
D. Insufficient data
In parallel resonance, there is _______________?
A. Both voltage and current amplification
B. Voltage amplifications
C. Current amplification
D. None of the above
If the resistance of a tuned circuit is increased, the Q of the circuit _______________?
A. Is increased
B. Is decreased
C. Remains the same
D. None of the above
At series resonance, the phase angle between applied voltage and circuit is______________?
A. 90o
B. 180o
C. 0o
D. None of the above
At series or parallel resonance, the circuit behaves as a ______________ load?
A. Capacitive
B. Resistive
C. Inductive
D. None of the above
In the double tuned circuit, if the mutual inductance between the two tuned circuits is decreased, the level of resonance curve ___________________?
A. Remains the same
B. Is lowered
C. Is raised
D. None of the above
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
Double tuned circuits are used in ____________ stages of a radio receiver?
A. IF
B. Audio
C. Output
D. None of the above
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