Circuit Theory – Multiple Choice Questions (MCQs)

1. 169. What is "linearity" in a circuit element?

   • A. Its resistance is constant
   • B. Its voltage-current relationship is directly proportional
   • C. It stores energy
   • D. It generates power

2. 170. What is "bilateral" in a circuit element?

   • A. It allows current flow in only one direction
   • B. It allows current flow in both directions
   • C. It has two terminals
   • D. It has no resistance

3. 171. The "Tellegen's theorem" is based on the conservation of:

   • A. Energy
   • B. Power
   • C. Charge
   • D. Momentum

4. 172. What is the "quality factor (Q)" of a parallel RLC circuit?

   • A. R / (wL)
   • B. wL / R
   • C. R / (wC)
   • D. wC / R

5. 173. What is the "quality factor (Q)" of a series RLC circuit?

   • A. wL / R
   • B. R / (wL)
   • C. R / (wC)
   • D. wC / R

6. 174. What is "damping ratio" in an RLC circuit?

   • A. A measure of resonance
   • B. A measure of how oscillations in a system decay after a disturbance
   • C. A measure of resistance
   • D. A measure of capacitance

7. 175. The "cut-off frequency" of a filter is the frequency at which the output power is reduced to:

   • A. Half of the maximum power
   • B. Zero
   • C. Maximum
   • D. Twice the maximum power

8. 176. What is a "band-pass filter"?

   • A. A filter that passes all frequencies
   • B. A filter that allows frequencies within a specific range to pass
   • C. A filter that blocks all frequencies
   • D. A filter that blocks a specific range of frequencies

9. 177. What is a "low-pass filter"?

   • A. A filter that allows high frequencies to pass
   • B. A filter that allows frequencies below a certain cut-off frequency to pass
   • C. A filter that blocks low frequencies
   • D. A filter that passes only a specific frequency

10. 178. What is a "high-pass filter"?

    • A. A filter that allows low frequencies to pass
    • B. A filter that allows frequencies above a certain cut-off frequency to pass
    • C. A filter that blocks high frequencies
    • D. A filter that passes only DC

11. 179. What is the "supernode" method in nodal analysis?

    • A. A node with only one branch
    • B. A hypothetical node that connects two non-reference voltage nodes with a voltage source between them
    • C. A node connected to ground
    • D. A node with no current

12. 180. What is the "supermesh" method in mesh analysis?

    • A. A mesh with only one branch
    • B. A hypothetical mesh created when a current source is common to two meshes
    • C. A mesh with no voltage source
    • D. A mesh with infinite resistance