Multiple Choice Question On RLC Circuits and Resonance

Q1. What is the applied voltage for a series RLC circuit when I_{T} = 3 mA, V_{L} = 30 V, V_{C} = 18 V, and R = 1000 ohms?
A. 3.00 V
B. 12.37 V
C. 34.98 V
D. 48.00 V
Answer: Option B

Q.2 What is the bandwidth of the circuit?

A. 31.8 Hz
B. 32.3 Hz
C. 142 Hz
D. 7.2 kHz
Answer: Option A

Q. 3 In a parallel RLC circuit, which value may always be used as a vector reference?
A. current
B. reactance
C. resistance
D. voltage
Answer: Option D

Q 4. How much current will flow in a 100 Hz series RLC circuit if V_{S} = 20 V, R_{T} = 66 ohms, and X_{T} = 47 ohms?
A. 1.05 A
B. 303 mA
C. 247 mA
D. 107 mA
Answer: Option C

Q.5 What is the Q (Quality factor) of a series circuit that resonates at 6 kHz, has equal reactance of 4 kilo-ohms each, and a resistor value of 50 ohms?
A. 0.001
B. 50
C. 80
D. 4.0

Q.6 What is the range between f_{1} and f_{2} of an RLC circuit that resonates at 150 kHz and has a Q of 30?
A. 100.0 kHz to 155.0 kHz
B. 147.5 kHz to 152.5 kHz
C. 4500 kHz to 295.5 kHz
D. 149,970 Hz to 150,030 Hz
Answer: Option B

Q.7 What is the quality factor?

A. 999
B. 223
C. 2.2
D. 0.99
Answer: Option C

Q.8 What effect will a parallel tank have upon final filter current?
A. very little
B. The bandpass frequencies will change.
C. The frequency cutoff will change.
D. The impedance will block output.
Answer: Option A