# GATE Questions & Answers of Simple Diode Circuits: Clipping, Clamping and Rectifiers

## What is the Weightage of Simple Diode Circuits: Clipping, Clamping and Rectifiers in GATE Exam?

Total 10 Questions have been asked from Simple Diode Circuits: Clipping, Clamping and Rectifiers topic of Analog Circuits subject in previous GATE papers. Average marks 1.70.

In the circuit shown below, the knee current of the ideal Zener diode is 10 mA. To maintain 5 V across RL, the minimum value of RL in $\Omega$ and the minimum power rating of the Zener diode in mW, respectively, are ##### Show Answer

A voltage 1000 Volts is applied across YZ. Assuming ideal diodes, the voltage measured across WX in Volts, is ##### Show Answer

The diodes and capacitors in the circuit shown are ideal. The voltage v(t) across the diode D1 is ##### Show Answer

In the circuit shown below, assume that the voltage drop across a forward biased diode is 0.7 V. The thermal voltage Vt = kT / q = 25mV. The small signal input The bias current IDC through the diodes is

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In the circuit shown below, assume that the voltage drop across a forward biased diode is 0.7 V. The thermal voltage Vt = kT / q = 25mV. The small signal input The ac output voltage vac is

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Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1×1017cm-3
Depletion width on the n-side = 0.1μm
Depletion width on the p-side =1.0μm
Intrinsic carrier concentration = 1.4×1010cm-3
Thermal voltage = 26mV
Permittivity of free space = 8.85×10-14F.cm-1
Dielectric constant of silicon = 12

The built in potential of the junction

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Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1×1017cm-3
Depletion width on the n-side = 0.1μm
Depletion width on the p-side =1.0μm
Intrinsic carrier concentration = 1.4×1010cm-3
Thermal voltage = 26mV
Permittivity of free space = 8.85×10-14F.cm-1
Dielectric constant of silicon = 12

The peak electric field in the device is

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In the following limiter circuit, an input voltage Vi = 10sin100$\mathrm{\pi }\phantom{\rule{0ex}{0ex}}$t applied. Assume that the diode drop is 0.7V when it is forward biased. The Zener breakdown voltage is 6.8V. The maximum and minimum values of the output voltage respectively are

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The correct full wave rectifier circuit is:

 (A) (B) (C) (D) ##### Show Answer

For the Zener diode shown in the figure, the Zener voltage at knee is 7 V, the knee current is negligible and the Zener dynamic resistance is 10 Ω. If the input voltage (Vi) range is from 10 to 16V, the output voltage (Vo) ranges from 