Electrical Engg (EEE) - MCQ Practice Questions
Electrical Engineering questions for GATE, PSU recruitment and SSC JE draw from network theory, electrical machines, power systems, control systems, measurements and instrumentation, analog and digital electronics, and electromagnetic fields. Numerical answers include the formula used and the unit at each stage, which is where marks are commonly lost even when the approach is correct.
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For a series RLC circuit with R = 10 Ω, L = 0.1 H, C = 100 μF at resonance, what is the resonant frequency?
In a DC circuit, a 12V battery is connected to a resistor network. Using Thevenin's theorem, what is the Thevenin equivalent voltage (Vth) across terminals A and B if the open circuit voltage is measured as 8V?
Which of the following statements about Kirchhoff's Voltage Law (KVL) is correct?
A network has two meshes with currents I₁ = 3A and I₂ = 2A. The mutual inductance between the coils is 0.5H. What is the mutual inductance voltage in the first coil due to current change in the second coil at dI₂/dt = 4 A/s?
In a bridge circuit (Wheatstone bridge), for the bridge to be balanced, which condition must be satisfied?
A parallel RC circuit is connected to a 100V AC source at 50Hz. If R = 20Ω and C = 100μF, what is the total impedance of the circuit?
Using superposition theorem for a circuit with two voltage sources V₁ = 10V and V₂ = 5V connected in series with a 10Ω resistor, what is the current when considering only V₁?
What is the Norton equivalent current (In) for a circuit where the short-circuit current between terminals A and B is 5A?
In a three-phase balanced circuit with line voltage VL = 440V, what is the phase voltage (Vph) in star connection?
A capacitor with capacitance C = 50μF is charged to 200V. What is the energy stored in the capacitor?
In mesh current analysis for a two-mesh circuit with self-resistances R₁ = 10Ω, R₂ = 15Ω and mutual resistance Rm = 5Ω, and voltages V₁ = 20V, V₂ = 0V, what would be the mesh impedance matrix determinant?
A 100Ω resistor is connected across a 50V DC source. What is the power dissipated?
In delta-to-star transformation, if delta resistances are Ra = 30Ω, Rb = 40Ω, Rc = 50Ω, what is the star resistance R₁ (connected to point corresponding to Ra)?
A series RLC circuit has R = 20Ω, L = 0.2H, C = 100μF at resonant frequency. What is the resonant frequency?
In a circuit with two parallel resistors R₁ = 6Ω and R₂ = 12Ω, what is the equivalent resistance?
In a circuit analysis problem, the voltage across a 5Ω resistor is measured as 25V. Using Ohm's law, what is the current through the resistor?
What is the reactive power in an AC circuit with apparent power S = 1000VA and power factor = 0.8?
In a network, when using the cut-set method, a cut separates the network into two parts. How many equations are needed for a network with 'b' branches and 'n' nodes to find all branch currents?
In nodal analysis, the number of independent node equations required for a circuit with 'n' nodes and one reference node is:
For a linear network, the superposition theorem applies when the network contains: