What is Diode?

1 Answer

Answer :

Diode is a two-layer semiconductor device, conducts only positive cycles when applied to anode.

Related questions

Description : Which of the following is used as an optical receiver in fiber optics communications a. APD b. Tunnel diode c. Laser diode d. LED

Last Answer : a. APD

Description : Which of the following is used as an optical transmitter on the Fiber Optical Communications? a. APD b. LSA diode c. PIN diode d. LED

Last Answer : d. LED

Description : Is a non-coherent light source foe optical communications system. a. ILD b. LED c. APD d. PIN Diode

Last Answer : b. LED

Description : The most common device used as an LNA is A. zener diode B. tunnel diode C. IMPATT D. Shockley diode

Last Answer : B. tunnel diode

Description : In a triple conversion superheterodyne receiver, diode mixer stages are operated A. In the linear region B. In the nonlinear region C. As class A amplifiers D. As class B amplifiers

Last Answer : B. In the nonlinear region

Description : Referred to as a ferrite device that can be used in lieu of a duplexer to isolate a microwave transmitter and receiver when both are connected to the same antenna. A. Isolator B. Circulator C. Coupler D. Diode.

Last Answer : B. Circulator

Description : The most common device used as a light detector in fiber optic communications system. A. LED B. Darlington phototransistor C. APDs D. PIN diode

Last Answer : C. APDs

Description : A non-coherent light source for optical communications system. A. PIN Diode B. ILD C. APD D. LED

Last Answer : D. LED

Description : Drawbacks of Series Diode Clippers?

Last Answer : In series clippers, when diode is in ‘off’ position, there should be no transmission of input signal to output. But in case of high frequency signals transmission occurs through diode capacitance which is undesirable. This is the drawback of using diode as a series element in such clippers.

Description : Explain Clipping using Zener Diode?

Last Answer : one or two zener diodes are used to clip the voltage VIN. In the first circuit, the voltage is clipped to the reverse breakdown voltage of the zener diode. In the second, it is limited to the reverse breakdown voltage plus the voltage drop across one zener diode.

Description : Write some applications of PN junction diode

Last Answer : 1. Rectifier circuit ii. clipping and clamping iii voltage multiplier iv AM detection v. Feedback diodes vi Freewheeling diode

Description : It is the made from semiconductor material such as aluminum-galium-arsenide or gallium-arsenide-phosphide. A. APD B. Injection laser diode C. Light emitting diode D. Positive-intrinsic-negative

Last Answer : C. Light emitting diode

Description : Write down the applications of precision diode. 

Last Answer : 1.Half - wave rectifier 2.Full - Wave rectifier 3.Peak – value detector 4.Clipper 5.Clamper

Description : What do you mean by a precision diode?

Last Answer : The major limitation of ordinary diode is that it cannot rectify voltages below the cut – in voltage of the diode. A circuit designed by placing a diode in the feedback loop of an op – amp is called the precision diode and it is capable of rectifying input signals of the order of millivolt.