JFET in properly biased condition acts as a: ...

JFET in properly biased condition acts as a: 

(1) Current controlled current source (2) Voltage controlled voltage source (3) Voltage controlled current source (4) Impedance controlled current source
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JFET in properly biased condition acts as a: Voltage controlled current source.

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The transconductance of a JFET is computed at constant VDS by:

Description : The transconductance of a JFET is computed at constant VDS by: (1) Ratio of change in Idto change of Vgs (2) Ratio of change inVgs to change ofId (3) Product of change in Vgs to change of Id (4) Ratio of change in Vds to change of Id

Last Answer : The transconductance of a JFET is computed at constant VDS by: Ratio of change in Id to change of Vgs 

The operation of a JFET involves

Description : The operation of a JFET involves  (A) A flow of minority carriers (B) a flow 0f majority carriers (C) recombination (D) negative resistance

Last Answer : The operation of a JFET involves a flow 0f majority carriers 

In a JFET drain current is maximum when VGS is...

Description : In a JFET drain current is maximum when VGS is  (a) zero (b) negative (c) positive (d) equal to Vp

Last Answer : A

When an NPN transistor is properly biased then most of the electrons from the emitter

Description : When an NPN transistor is properly biased then most of the electrons from the emitter   (A) recombine with holes in the base (B) recombine in the emitter itself (C) pass through the base to the collector (D) are stopped by the junction barrier

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P-n junction when reversed biased acts as a (a) Capacitor (b) inductor (c) on switch (d) off switch

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in which BJT operating region both the junctions are reverse biased?

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Which of the following statements does not describe a condition that creates a demand for auditing? a. Users can directly assess the quality of information. b. Information can have substantial economic consequences for a decision maker. c. Expertise is often required for information preparation and verification. d. Conflict between an information preparer and a user can result in biased information

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Last Answer : Users can directly assess the quality of information.

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An automobile needs an antenna for its radio to play properly because: w) the automobile's tires insulate it from the ground. x) the automobile's body acts as a Faraday cage. y) when the automobile moves, the velocity of the radio signal appears changed with respect to when it is at rest. z) the transmitter also uses an antenna.

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The seven segment arrangement for numerical display on consoles, test meters and other applications can be either ________________. A. UJT or BJT B. BCD or OCD C. JFET or IGFET D. LED or LCD

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Which of the following low noise transistors is commonly used at microwave frequencies? A. MOSFET B. GASFET C. MESFET D. JFET

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The transistor with the lowest noise figure in the microwave region is a A. MOSFET B. Dual-gate MOSFET C. JFET D. MESFET

Description : The transistor with the lowest noise figure in the microwave region is a A. MOSFET B. Dual-gate MOSFET C. JFET D. MESFET

Last Answer : D. MESFET

Why JFET is called a unipolar transistor?

Description : Why JFET is called a unipolar transistor?

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What is the importance of JFET?

Description : What is the importance of JFET?

Last Answer : A JFET acts like a voltage controlled device i.e. input voltage controls the output current. This is different from ordinary transistor where input current controls the output current. JFET has higher input impedance than that of a conventional transistor.

What is pinch off voltage in JFET?

Description : What is pinch off voltage in JFET?

Last Answer : Pinch off voltage (VP): It is the minimum drain source voltage at which the drain current essentially becomes constant.

What is JFET?

Description : What is JFET?

Last Answer : A junction FET is a three terminal semiconductor device in which current conduction is by one type of carrier (i.e.) electrons or holes.

When compared to the JFET, what is the input impedance of the MOSFET?

Description : When compared to the JFET, what is the input impedance of the MOSFET?

Last Answer : The MOSFET has a higher input impedance.

The input and output signals of a JFET amplifier have what phase relationship?

Description : The input and output signals of a JFET amplifier have what phase relationship?

Last Answer : They are 180 degrees out of phase.

What is the normal current path in an N-channel JFET?

Description : What is the normal current path in an N-channel JFET?

Last Answer : From source to drain.

The source and drain of an N-channel JFET are made of what type of material?

Description : The source and drain of an N-channel JFET are made of what type of material?

Last Answer : N-type material.

What are the two types of JFET?

Description : What are the two types of JFET?

Last Answer : N-channel and P-channel.

State 2 advantages of JFET over BJT.

Description : State 2 advantages of JFET over BJT.

Last Answer : Advantages of JFET over BJT: 1) High input impedance 2) Better thermal stability 3) Produce less noise 4) Smaller than BJT 5) Rugged in construction and simpler to fabricate 6) High degree of isolation between Input and Output. 

Draw the transfer characteristics for N-channel JFET.

Description : Draw the transfer characteristics for N-channel JFET.

Last Answer : Transfer characteristics for N-channel JFET: 

Sketch p-channel JFET construction.

Description : Sketch p-channel JFET construction.

Last Answer : p- channel JFET constructional diagram:

Sketch construction of N-channel JFET and explain its operating principle.

Description : Sketch construction of N-channel JFET and explain its operating principle.

Last Answer : Construction of N-channel JFET: Working of N channel FET: a)when VGS is zero,ID flows because of VDS b)Now when VGS increases towards negative, depletion layer also increases on both sides. c)so VGS control drain current ID d)so it is called as field effect Transistor

State advantages of MOSFET over JFET.

Description : State advantages of MOSFET over JFET.

Last Answer : ➨It can be operated in either enhancement mode or depletion mode. ➨MOSFET have much higher input impedance compare to JFET. ➨They have high drain resistance due to lower resistance of channel. ➨It is easy to manufacture. ➨They support high speed of operation compare to JFETs.

With the help of N-channel JFET describe the effect of input voltage VGS on output current ID.

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Compare JFET with MOSFET.

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Define junction field effect transistor (JFET) and give an example.

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Describe operation of N-channel JFET

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A depletion MOSFET differs from a JFET in the sense that it has no

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A JFET has the disadvantage of

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The voltage gain of a common -source JFET amplifier depends up on its

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While biasing JFET if drain and source are interchanged, then

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The transit time of the current carriers through the channel of a JFET decides it's ?

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