EE MCQ
EE MCQ
Home
Quiz
Contact Us
RC Circuits
RC Circuits
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
decreases
remains the same
doubles
increases
decreases
remains the same
doubles
increases
Answer
Download EE MCQ app
RC Circuits
A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
Z = 150 angle – 90° Ω
Z = 150 –90° Ω
Z = 150
Z = 150 angle 180° Ω
Z = 150 angle – 90° Ω
Z = 150 –90° Ω
Z = 150
Z = 150 angle 180° Ω
Answer
Download EE MCQ app
RC Circuits
A 2 kΩ resistor and a 0.002 μF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
84.5 mW
845 mW
130 mW
13 mW
84.5 mW
845 mW
130 mW
13 mW
Answer
Download EE MCQ app
RC Circuits
A 47Ω resistor and a capacitor with 150Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
Z = 197Ω
Z = 47Ω – j150Ω
Z = 103Ω
Z = 47Ω + j150Ω
Z = 197Ω
Z = 47Ω – j150Ω
Z = 103Ω
Z = 47Ω + j150Ω
Answer
Download EE MCQ app
RC Circuits
A 120Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
3.7Ω
37.9Ω
4800Ω
14400Ω
3.7Ω
37.9Ω
4800Ω
14400Ω
Answer
Download EE MCQ app
1
2
...
6
Go to page
Search
Login here
Google
Download our application
Android
Apple
Follow Us
Facebook
Telegram
Instagram