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Electronics - RL Circuits

@ : Home > Electronics > RL Circuits > General Questions

Exercise

"You cannot shake hands with a clenched fist."
- Indira Gandhi
1. 

As frequency increases

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

2. 

Calculate the voltage dropped across R1 in the given circuit.

A. 14 V
B. 26.8 V
C. 28 V
D. 0 V

3. 

What is the true power of a 24 Vac parallel RL circuit when R = 45 omega.gif and XL = 1100 omega.gif?

A. 313.45 W
B. 12.8 W
C. 44.96 W
D. 22.3 W

4. 

If XL= 100 omega.gif and R = 100 omega.gif, then impedance will be

A. 141.4 omega.gif
B. 14.14 omega.gif
C. 100 omega.gif
D. 200 omega.gif

5. 

Which of the following statements is true if the inductor shorts out in the circuit in the given circuit?

A. Each component drops 5 V.
B. The impedance equals 0 omega.gif.
C. The power factor equals 1.
D. The phase angle equals 90°.




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