Which of the following statements is true if R1 opens in the circuit in the give

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Question
Which of the following statements is true if R₁ opens in the circuit in the given circuit?
Options
A. I_L2 increases.
B. Z_T decreases.
C. V_S increases.
D. V_L1 equals 0 V.

Correct Answer

V_L1 equals 0 V.

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4. As frequency increases
Options
A. both series and parallel RL impedance decrease
B. series RL impedance decreases and parallel RL impedance increases
C. series RL impedance increases and parallel RL impedance decreases
D. both series and parallel RL impedance increase

5. Which of the following statements is true about a lag network?
Options
A. An increase in frequency causes an increase in phase lag.
B. An increase in frequency causes an increase in the magnitude of the output voltage.
C. A decrease in frequency causes an increase in phase lag.
D. A decrease in frequency causes a decrease in the magnitude of the output voltage.

7.
Which of the following statements is true if the frequency decreases in the circuit in the given circuit?
Options
A. The phase angle decreases.
B. V_R decreases.
C. I_T decreases.
D. V_S decreases.

8. What is the magnitude of the phase angle between the source voltage and current when a 100 mH inductor with an inductive reactance of 6 kΩ and a 1 kΩ resistor are in series with a source?
Options
A. 0.1�
B. 9.0�
C. 61.0�
D. 81.0�

9.
Which of the following statements is true if the inductor shorts out in the circuit in the given circuit?
Options
A. Each component drops 5 V.
B. The impedance equals 0 Ω.
C. The power factor equals 1.
D. The phase angle equals 90�.

10.
Which of the following statements is true if R = 100 Ω and X_L = 100 Ω in the circuit in the given circuit?
Options
A. Each component drops 5 V.
B. The impedance equals 200 Ω.
C. The power factor equals 1.
D. The phase angle equals 45�.

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