BEE Study Guide 2026

A 4-bit counter counts from 0 to 2^4 − 1 = 15 before rolling over to zero.

HVDC eliminates reactive power losses and has lower resistive losses per unit length, making it more efficient for long-distance transmission.

The key difference lies in the memory structure. A Von Neumann architecture uses a single, shared memory and a common bus for both program instructions and data. In contrast, a Harvard architecture uses physically separate memories and separate buses for instructions and data, which allows the CPU to fetch an instruction and access data simultaneously, potentially overcoming the 'Von Neumann bottleneck'.

A D flip-flop is a synchronous device, meaning its output (Q) can only change state on the active edge of the clock signal (either positive or negative edge, depending on its design). If the clock is low, the flip-flop is in a 'hold' state, and its output will retain its previous value, regardless of the current state of the D input. Thus, there will be no change in the output.

Maxwell's Inductance Capacitance Bridge is a specific type of AC bridge circuit primarily used for the precise measurement of unknown inductance. It operates by comparing the unknown inductance with a known standard capacitance. This bridge is particularly well-suited for measuring inductors with a medium Q-factor, providing accurate results by balancing the reactive components.

Gain margin is the reciprocal of the open-loop gain magnitude at the phase crossover frequency, indicating how much gain increase causes instability.