Home / MCQ Bank / Electronics and Communication

Electronics and Communication Electronic Devices And Circuits Difficulty: Medium

The current in resistor R shown in the figure will be To eliminate ghosts in the picture Consider the sequence x[n] = a n u[n] + b n u[n], where u[n] denotes the unit-step sequence and 0 < |a| < |b| < 1. The region of convergence (ROC) of the z-transform of x[n] is Consider an inverting amplifier with a feedback resistor R 2 = 10 kΩ and an op-amp with parameters; A oL = 10 5 and R i = 10 kΩ. Assuming the output resistance R 0 of the op-amp is negligible, the closed-loop input resistance at the inverting terminal of an inverting amplifier will be nearly: Two incandescent lights of 40 W and 80 W are connected in series: