Electrical Engg (EEE) - MCQ Practice Questions

In a complex circuit using superposition theorem, the total response is found by:

For a transmission line with characteristic impedance Z₀ = 50 Ω and load impedance ZL = 100 Ω, the reflection coefficient is:

A resistor of 10 Ω is connected in series with an inductor of 0.1 H across a 50 Hz AC supply. What is the impedance of the circuit?

In Thevenin's theorem, what is the Thevenin equivalent voltage (VTh)?

A capacitor of 100 μF is charged to 200V. What is the energy stored in it?

In a three-phase balanced system, if the line voltage is 400V, what is the phase voltage?

What is the power factor of a circuit with impedance Z = 8 + j6 Ω?

Two identical resistors R are connected in parallel. What is the equivalent resistance?

In a purely capacitive circuit with V = 100V (RMS) and C = 50 μF at 50 Hz, what is the capacitive reactance?

What happens to the impedance of a series RLC circuit when frequency approaches resonant frequency?

The Q-factor of a resonant circuit is defined as:

In mesh analysis, what does each mesh equation represent?

A 50 Ω transmission line has a velocity factor of 0.67. What is the wavelength at 1 GHz?

The instantaneous power in an AC circuit is given by:

What is the time constant (τ) of an RL circuit with R = 100 Ω and L = 0.5 H?

In a circuit with current I = 5sin(314t + 30°) A, what is the RMS value of current?

What is the purpose of nodal analysis in circuit theory?

A circuit has resistance R = 8 Ω and reactance X = 6 Ω (inductive). If the apparent power is 100 VA, what is the real power?

In maximum power transfer theorem, the load resistance should be:

A sinusoidal voltage v(t) = 300sin(100πt) V is applied to a 50 Ω resistor. What is the average power dissipated?