Exams › GATE › Technical

The diodes D1 and D2 in the figure are ideal and the capacitors are identical. The product RC is very large compared to the time period of the ac voltage. Assuming that the diodes do not breakdown in the reverse bias, the output voltage V0 (in volt) at the steady state is ----------- The ac source is 10 sin ωt, connected between the left node and the midpoint of two identical capacitors C connected in series between the top and bottom rails. Ideal diode D1 is on the top rail from left to right, ideal diode D2 is on the bottom rail from left to right, and the load resistor R is connected between the top and bottom rails with V0 measured across R, positive at the top rail and negative at the bottom rail.

1. 0
2. 5
3. 10
4. 20

Correct answer: 20

Solution

In steady state, the ideal diodes D1 and D2 conduct during the positive and negative halves of the AC cycle, respectively, allowing the full amplitude of the AC voltage to appear across the load resistor R. Since the AC source has a peak voltage of 10 volts, the output voltage V0 across R effectively doubles to 20 volts due to the contributions from both halves of the waveform.

Related GATE Technical questions

• In an 8085 microprocessor, the contents of the accumulator and the carry flag are A7 (in hex) and 0, respectively. If the instruction RLC is executed, then the contents of the accumulator (in hex) and the carry flag, respectively, will be
• The minimum number of 2-input NAND gates required to implement a 2-input XOR gate is
• The block diagram of a feedback control system is shown in the figure. The overall closed-loop gain G of the system is
• For the unity feedback control system shown in the figure, the open-loop transfer function G(s) is given as G(s) = 2 / (s(s+1)). The steady state error e_ss due to a unit step input is
• A binary baseband digital communication system employs the signal p(t) = { 1/√Tₛ, 0 ≤ t ≤ Tₛ { 0, otherwise for transmission of bits. The graphical representation of the matched filter output y(t) for this signal will be
• If a right-handed circularly polarized wave is incident normally on a plane perfect conductor, then the reflected wave will be

⚔️ Practice GATE Technical free + battle 1v1 →