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.
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1 answer
asked
May 2, 2020
by
anonymous

Describe operation of N-channel JFET
Last Answer : Operation of N-channel JFET 1) When VGS = 0 volt: When a voltage is applied between the drain and source with a DC supply voltage VDD with VGS = 0 V, the electrons flow from source ... to zero. The gate to source voltage at which current reduces to zero is called as pinch-off voltage.
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173 views
1 answer
asked
Sep 5, 2018
by
anonymous

What is channel length modulation in MOSFET?
Last Answer : Shortening of lenght of the inverted channel region with increase in drain bias for large drain biases due to which current increases with drain bias and output resistance decreases is called channel length modulation in MOSFET.
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313 views
2 answers
asked
Mar 19, 2018
by
anonymous

How do mosquitoes not become carriers of AIDS?
Last Answer : answer:Apparently there is something in the mosquito’s system that destroys the aids virus. And/or the mosquito may digest the virus. Also, “MOSQUITOES DO NOT INGEST ENOUGH HIV PARTICLES T0 TRANSMIT AIDS BY… an AIDS carrier to receive a single unit of HIV from contaminated mosquito mouthparts….
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1 answer
asked
Feb 27
by
anonymous

In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: A) Half the total number of electrons in the crystal B) Zero C) Half the number of atoms in the crystal D) Half the number of free electrons in the crystal
Last Answer : In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: Zero
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210 views
1 answer
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Jun 18, 2018
by
anonymous

How the charge Carriers are created?
Last Answer : Charge Carriers are created if the electrons is removed from atom .
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65 views
1 answer
asked
Sep 20, 2017
by
anonymous

The voltage gain of a common -source JFET amplifier depends up on its (1) Input impedance (2) Amplification factor (3) Dynamic drain resistance (4) Drain load resistance
Last Answer : B
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990 views
3 answers
asked
Apr 30, 2018
by
anonymous

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.
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233 views
1 answer
asked
Jun 24, 2020
by
anonymous

Compare JFET with MOSFET.
Last Answer : Particulars JFET MOSFET 1) Type Voltage controlled device Voltage controlled device 2) Mode of operation Operates only in depletion mode Operates in depletion and enhancement ... 6) Gate connection Not isolated from substrate Isolated by SiO2 layer from substrate
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108 views
1 answer
asked
Sep 5, 2018
by
anonymous

Define junction field effect transistor (JFET) and give an example.
Last Answer : Junction Field-Effect Transistor: It is a semiconductor device having three terminals, namely Gate, Drain and Source, in which the current flow is controlled by an electric field set up by an external voltage applied ... : i) n-channel JFET and ii) p-channel JFET Examples of JFET: BFW 10, BFW 11
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216 views
1 answer
asked
Sep 5, 2018
by
anonymous

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
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314 views
2 answers
asked
Apr 25, 2018
by
anonymous

Describe IS – 95 forward link channel structure.
Last Answer : The IS-95 forward Channel structure consists of four types of logical Channels - pilot Channel, synchronization Channel, paging Channel, and forward traffic Channels. Each forward carrier Channel contains one ... . This code is known as the channel identifier. This code is different for each user
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90 views
1 answer
asked
Aug 6, 2019
by
anonymous

Define the following terms : (i) Base Station (ii) Control Channel (iii) Mobile Station (iv) Page
Last Answer : i) Base Station: - A fixed station in a mobile radio system used for radio communication with mobile stations. Base stations are located at the center or on the edge of a coverage region ... the page throughout the service area using base stations which broadcast the page on a radio carrier.
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128 views
1 answer
asked
Aug 6, 2019
by
anonymous

Explain estimation of channel capacitance of CMOS.
Last Answer : Capacitance estimation: The dynamic response i.e. switching speed of MOS system depends on capacitance associated with the MOS devices which are formed by different layers in MOS transistors ... are due to three dimensional, distributed charge voltage relations within the device structure.
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75 views
1 answer
asked
Jul 21, 2019
by
anonymous

What is the channel capacity of a noisy channel with conditional probability of error p = 1/2? A) 0 B) 1 C) Infinity D) 2
Last Answer : What is the channel capacity of a noisy channel with conditional probability of error p = 1/2? A) 0 B) 1 C) Infinity D) 2
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108 views
1 answer
asked
Jun 18, 2018
by
anonymous

As per Shannon’s channel capacity theorem, if samples are transmitted in ‘T’ seconds over a noisy channel which is bandlimited to ‘B’ Hz. The number of samples ‘n’ is given by (symbols/notations carry their usual meaning) A) B/T B) T/B C) 2BT D) BT/2
Last Answer : As per Shannon’s channel capacity theorem, if samples are transmitted in ‘T’ seconds over a noisy channel which is bandlimited to ‘B’ Hz. The number of samples ‘n’ is given by ( ... /notations carry their usual meaning) A) B/T B) T/B C) 2BT D) BT/2
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107 views
1 answer
asked
Jun 18, 2018
by
anonymous

The threshold voltage of an n- channel enhancement mode MOSFET is 0.5V when the device is biased at a gate voltage of 3V. Pinch off would be occurs at a drain voltage of (A) 1.5V (B) 2.5V (C) 3.5V (D) 4.5V
Last Answer : The threshold voltage of an n- channel enhancement mode MOSFET is 0.5V when the device is biased at a gate voltage of 3V. Pinch off would be occurs at a drain voltage of 2.5V
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313 views
1 answer
asked
Apr 28, 2018
by
anonymous

ln HRC fuse the time between cut-off and final current zero is called
Last Answer : ln HRC fuse the time between cut-off and final current zero is called the arcing time
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139 views
1 answer
asked
Apr 26, 2018
by
anonymous

Last Answer : The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits.
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2.6k views
1 answer
asked
Mar 20, 2018
by
anonymous

Cheap ways to get from Ft Pierce, FL to Miami when you don't have a car?
Last Answer : Greyhound Bus.
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0 views
1 answer
asked
Feb 27
by
anonymous

What's an underground, subway, metro, métro or any kind of train station with a name that starts with 'x'?
Last Answer : Why?
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1 view
1 answer
asked
Feb 14
by
anonymous

A depletion MOSFET differs from a JFET in the sense that it has no (A) channel (B) gate (C) P-N junctions (D) substrate
Last Answer : A depletion MOSFET differs from a JFET in the sense that it has no P-N junctions
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1.1k views
1 answer
asked
May 17, 2018
by
anonymous

When electric current passes through a metallic conductor, its temperature rises. This is due to?
Last Answer : When electric current passes through a metallic conductor, its temperature rises. This is due to collisions between conduction electrons and atoms.
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236 views
1 answer
asked
Mar 25, 2018
by
anonymous

Find the current through 4 ohm resistor by source transformation
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135 views
0 answers
asked
Mar 21, 2020
by
anonymous

Find current through resistor using nodal analysis
Last Answer : Find current through resistor using nodal analysis
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910 views
1 answer
asked
Feb 17, 2020
by
anonymous

Does current flow through a capacitor ?
Last Answer : Imagine a pipe with a flexible diaphram in the middle separating two haves of the pipe. Now the pipe is filled with air. If you apply a pressure to one end the diaphram will deform ... capacitor, the effects on electrons will be recreated across the boundary. But theres no electrical connection...
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102 views
1 answer
asked
Aug 25, 2019
by
anonymous

Leakage current flows through the thyristor in
Last Answer : Leakage current flows through the thyristor in Forward blocking mode and Reverse blocking mode.
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211 views
1 answer
asked
May 8, 2018
by
anonymous

When current flows through heater coil it glows but supply wiring does not glow because?
Last Answer : When current flows through heater coil it glows but supply wiring does not glow because resistance of heater coil is more than the supply wires.
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121 views
1 answer
asked
Mar 25, 2018
by
anonymous

When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is?
Last Answer : When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is D.C.
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164 views
1 answer
asked
Mar 25, 2018
by
anonymous

Electric current passing through the circuit produces?
Last Answer : Electric current passing through the circuit produces thermal effect.
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142 views
1 answer
asked
Mar 25, 2018
by
anonymous

Current velocity through a copper conductor is
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121 views
0 answers
asked
Mar 25, 2018
by
anonymous

The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is_______Vs.
Last Answer : The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is 20 Vs
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269 views
1 answer
asked
Mar 25, 2018
by
anonymous

When an alternating current passes through an ohmic resistance the electrical power converted into heat is?
Last Answer : When an alternating current passes through an ohmic resistance the electrical power converted into heat is true power.
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964 views
1 answer
asked
Mar 25, 2018
by
anonymous

Can you make alternating current through a battery?
Last Answer : Yes, we can make AC through a battery using an inverter.
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99 views
1 answer
asked
Mar 14, 2018
by
anonymous

What happens when a current flows through a wire?
Last Answer : Current can produce two effect one is heating effect and second is magnetic effect.
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126 views
2 answers
asked
Mar 14, 2018
by
anonymous

What is the normal current path in an N-channel JFET?
Last Answer : From source to drain.
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7 views
1 answer
asked
Aug 20, 2021
by
anonymous

Define current. State its unit.
Last Answer : Electric current: It is a measure of the amount of electrical charge transferred per unit time. It represents the flow of electrons through a conductive material, such as a metal wire. Unit: 1 coulomb/second. OR Its unit is ampere represented by A
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89 views
1 answer
asked
Jul 26, 2019
by
anonymous

A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is
Last Answer : A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is 36 Ohm
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329 views
1 answer
asked
May 3, 2018
by
anonymous

The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees.
Last Answer : 45
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833 views
2 answers
asked
Mar 24, 2018
by
anonymous

When secondary of a current transformer is open-circuited its iron core will be?
Last Answer : When secondary of a current transformer is open-circuited its iron core will be hot because of heavy iron losses taking place in it due to high flux density.
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165 views
1 answer
asked
Mar 19, 2018
by
anonymous
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a dc generator has a terminal voltage of 250V and an induced voltage of 262V when the generator is loaded. the brush drop is 1volt per brush and the armature resistance is 0.03 ohm ... reaction and determine the following: the load current the power of the load the percentage voltage regulation.
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13 views
0 answers
asked
Aug 3, 2021
by
yanga

Analyze the effect of supply voltage on performance of LED as regards current, Lumen output, efficacy and life.
Last Answer : 1) Effect on Current:- In LED current depends upon supply voltage, if voltage get changes then current also change but this change in current will be control by resistors which are connected in series. 2) ... 4) Effect on Life:- If supply voltage is not stable then life of LED get reduced.
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106 views
1 answer
asked
May 3, 2020
by
anonymous

Define: i) Input Offset Voltage ii) Input offset Current iii) Input Bias Current iv) Output offset voltage
Last Answer : Definition of parameters of OPAMP is follows: i) Input Offset Voltage: Input offset voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or ... to ground) and output voltage is obtained non zero such voltage is output offset voltage of opamp.
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675 views
1 answer
asked
May 2, 2020
by
anonymous

Even at no-load, a transformer draws current from the mains. Why?
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114 views
0 answers
asked
Apr 28, 2020
by
anonymous

Current division rule example
Last Answer : Current division rule example
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101 views
1 answer
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Apr 11, 2020
by
anonymous

Current division
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80 views
0 answers
asked
Apr 11, 2020
by
anonymous

A linear network has a current input 4cos(ω t + 20º)A and a voltage output 10 cos(ωt +110º) V. Determine the associated impedance.
Last Answer : Solution
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158 views
1 answer
asked
Apr 1, 2020
by
anonymous

Source transformation voltage source to current source and vice versa
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98 views
0 answers
asked
Mar 21, 2020
by
anonymous

Nodal analysis problem two current source
Last Answer : Nodal analysis problem two current source
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362 views
1 answer
asked
Feb 17, 2020
by
anonymous

Direct Current (DC) Next Topic : Alternating current (AC)
Last Answer : Direct Current (DC) is the unidirectional electric current. Uni meaning is one. And the flow of charge in same direction. We know that conventional current flow from positive terminal of battery to ... The magnitude of DC may constant or vary but direction do not change with respect to time.
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220 views
3 answers
asked
Nov 22, 2019
by
anonymous
