RLC Circuits and Resonance - General Questions (2)

Directions to Solve

RLC Circuits and Resonance - General Questions

9. 

What is the approximate phase angle in a series RLC circuit when VC = 117 V, VR = 14.5 V, and VL = 3.3 V?
A. –45.0 degrees
B. –82.7 degrees
C. –90.0 degrees
D. –172.7 degrees

Answer: Option B

Explanation:

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10. 

mcq13_1002 (1)

What is the impedance of the circuit in the given circuit?

 
A. 125.7 omega
B. 297.6 omega
C. 370.1 omega
D. 423.3 omega

Answer: Option C

Explanation:

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11. 

mcq13_1004 (1)

What is the resonant frequency in the given circuit?

 
A. 6.5 kHz
B. 53.7 kHz
C. 107.4 kHz
D. 18.1 MHz

Answer: Option B

Explanation:

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12. 

What is the impedance of the circuit?

mcq13_1008 (2)
A. 12.2 komega
B. 14.5 komega
C. 17.8 komega
D. 20.3 komega

Answer: Option D

Explanation:

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13. 

Current in a series RLC circuit may always be used as:
A. a leading vector
B. a reference
C. an angle
D. a lagging vector

Answer: Option B

Explanation:

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14. 

What is the high cutoff frequency for an RLC circuit that resonates at 2000 Hz and has a bandwidth of 250 Hz?
A. 2125 Hz
B. 2250 Hz
C. 1750 Hz
D. 8.0 Hz

Answer: Option A

Explanation:

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15. 

mcq13_1008 (2)

What is the total current for the nonideal circuit in the given circuit. If it is at resonance?

 
A. 0 A
B. 284 mu (1) A
C. 3.3 mA
D. 38.5 mA

Answer: Option B

Explanation:

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16. 

What is the total impedance of a 60 Hz series RLC circuit when XL = 7.5 ohms, XC = 265.3 ohms, and R = 33 ohms?
A. 257.8 ohms
B. 259.9 ohms
C. 290.8 ohms
D. 1989.75 ohms

Answer: Option B

Explanation:

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