Fundamentals of Electric Circuits MCQs (Part-6)

What is transient analysis in an electrical circuit?

A Voltage change
B Long-term analysis
C Current behavior
D Immediate response

In a steady-state analysis, how are voltages and currents described?

A Constant
B Fluctuating
C Changing
D Zero

What does the term “AC circuit” refer to?

A Fixed voltage
B Variable resistance
C Alternating current
D Direct current

What happens to the current in an AC circuit with inductance?

A Increases instantly
B Lags voltage
C Remains constant
D Leads voltage

What is the effect of a capacitor in an AC circuit?

A Limits current
B Opposes voltage
C Shifts phase
D Stores energy

How does the impedance behave in an inductive AC circuit?

A Increases with frequency
B Varies randomly
C Decreases with frequency
D Remains constant

What happens to the voltage in a series AC circuit with resistive components?

A Remains constant
B Increases
C Varies randomly
D Divides equally

What defines a steady-state in an AC circuit?

A Random fluctuations
B No current flow
C Constant values of voltage and current
D Time-varying response

In a transient analysis of a capacitor, what happens after it charges fully?

A Current stops
B Voltage increases
C Voltage decreases
D Current increases

How does an inductor behave in an AC circuit at high frequencies?

A Acts as a short circuit
B Provides high impedance
C Provides low impedance
D Does not affect current

What is the phase relationship between voltage and current in a purely resistive AC circuit?

A Voltage leads current
B Current leads voltage
C Current and voltage are in phase
D Current and voltage are out of phase

What is the behavior of current in a purely capacitive AC circuit?

A Leads voltage
B In phase with voltage
C Lags voltage
D Opposes voltage

What does resonance in an AC circuit occur when?

A Frequency is zero
B Resistance is at its maximum
C Voltage and current are out of phase
D Impedance is at a minimum

What is the role of a resistor in an AC circuit?

A Change phase
B Limit current
C Control frequency
D Store energy

How does a capacitor behave in a DC circuit?

A Conducts current
B Increases voltage
C Blocks current
D Changes resistance