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

In a JFET drain current is maximum when VGS is 

(a) zero (b) negative (c) positive (d) equal to Vp
by

1 Answer

Answer :

A
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Related questions

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

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

Last Answer : Working of N channel FET: * When a voltage is applied between the drain and source with a DC supply (VDD), the electrons flows from source to drain through narrow channel ... where the channel gets completely blocked and the drain current becomes zero is called pinch- off voltage. 

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.

While biasing JFET if drain and source are interchanged, then

Description : While biasing JFET if drain and source are interchanged, then (A) device will work normally (B) device will get damaged (C) device will work but value of drain current will affected (D) device will not operate at all

Last Answer : B

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 

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

Description : 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

Last Answer : JFET in properly biased condition acts as a: Voltage controlled current source.

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Description : Fill in the blank(s) with the appropriate word(s)  i. A MOSFET operates in the ________________ mode when vGS < vGS(th)  ii. In the ohmic region of operation of a MOSFET vGS - vGS (th) ... ix. The safe operating area of a MOSFET is restricted on the left hand side by the ________________ limit. 

Last Answer : i. A MOSFET operates in the Cut off mode when vGS < vGS(th) ii. In the ohmic region of operation of a MOSFET vGS - vGS (th) is greater than vDS. iii. rDS (ON) of a MOSFET decreases ... Distributed under Creative Commons Attribution-ShareAlike - CC BY-SA. Version 2 EE IIT, Kharagpur

Pinch off voltage of a J FET is the drain to source voltage above which drain current.

Description : Pinch off voltage of a J FET is the drain to source voltage above which drain current. • Increases • Decreases • Remains constant • Becomes zero

Last Answer : Pinch off voltage of a J FET is the drain to source voltage above which drain current Remains constant

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

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

Last Answer : The transit time of the current carriers through the channel of a JFET decides it's gate characteristics.

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

Description : 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

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

Last Answer : C. MESFET

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?

Last Answer : In JFET, the current conduction is either by electrons or holes and controlled by means of an electric field between the gate electrode and the conducting channel of the device, So it is called as a unipolar transistor.

What is the importance of JFET?

Description : What is the importance of JFET?

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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 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.

Compare JFET with MOSFET.

Description : 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

Description : 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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Last Answer : A depletion MOSFET differs from a JFET in the sense that it has no P-N junctions 

A JFET has the disadvantage of

Description : A JFET has the disadvantage of  1. Having low input impedance 2. Having high output impedance 3. Having small gain band-width product 4. Possessing positive temperature coefficient

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Has anyone invented a way to pour grease down the drain?

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