GAT Subject Engineering MCQs

A capacitor stores separated electric charge.
Its energy is associated with the electric field between conductors.

Current through an inductor creates a magnetic field.
The stored energy depends on inductance and current.

The farad is the SI unit of capacitance.
Capacitance is charge stored per unit voltage.

The henry is the SI unit of inductance.
Inductance relates induced voltage to rate of current change.

Reactance depends on frequency and energy storage elements.
It contributes to impedance without directly dissipating average power.

Impedance combines resistance and reactance.
It is represented as a complex quantity in AC analysis.

Frequency is measured in hertz.
It is the reciprocal of the period.

RMS provides an effective value for power calculations.
For a sine wave, RMS equals peak divided by square root of two.

Power factor indicates how effectively current is converted into useful power.
It equals cosine of the phase angle for sinusoidal systems.

Current is the rate of flow of electric charge.
One ampere equals one coulomb per second.

KCL follows conservation of charge.
Current entering a junction equals current leaving it.

Bernoulli relates pressure head, velocity head, and elevation head.
Real-flow applications include head losses.