In MOSFET, the polarity of the inversion layers is the same as that of?

A certain power MOSFET has a maximum junction temperature specification of 1500o C, a junction-to-case thermal resistance of 1.00 C/W, and a junction-to ambient thermal resistance of 600 C/W. If the ambient temperature is 300o C ... the device will be A) 1.52 W B) 1.72 W C) 1.92W D) 2.00 W
Last Answer : A certain power MOSFET has a maximum junction temperature specification of 1500o C, a junction-to-case thermal resistance of 1.00 C/W, and a junction-to ambient thermal resistance of ... 300o C, then the maximum allowable power dissipation in the device will be 2.00 W

148 views 1 answer

asked Jun 18, 2018 by anonymous

When does the Body bias effect occur in an n-channel MOSFET?

When does the Body bias effect occur in an n-channel MOSFET? A) When the Source voltage is less the Bulk voltage B) When the Source voltage is equal to or greater the Bulk voltage C) When the Drain voltage is equal to the Bulk voltage D) When the Gate voltage is equal to the Bulk Voltage
Last Answer : When does the Body bias effect occur in an n-channel MOSFET? A) When the Source voltage is less the Bulk voltage B) When the Source voltage is equal to or greater the Bulk voltage C) ... voltage is equal to the Bulk voltage D) When the Gate voltage is equal to the Bulk Voltage

109 views 1 answer

asked Jun 18, 2018 by anonymous

A MOSFET has how many terminals?

A MOSFET has how many terminals?
Last Answer : A MOSFET having three terminals 1st one is Gate (insulated), 2nd one is Source and 3rd one is Drain.

216 views 3 answers

asked Mar 19, 2018 by anonymous

What is the transconductance of a MOSFET?

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asked Mar 19, 2018 by anonymous

What is meant by pinch off voltage in MOSFET?

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asked Mar 19, 2018 by anonymous

What is channel length modulation in MOSFET?

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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asked Mar 19, 2018 by anonymous

What is meant by body effect in MOSFET?

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asked Mar 19, 2018 by anonymous

How can we check a Mosfet?

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asked Mar 19, 2018 by anonymous

What is the use of a Mosfet?

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asked Mar 19, 2018 by anonymous

Why Mosfet is called Mosfet?

Why Mosfet is called Mosfet?
Last Answer : Why Mosfet is called Mosfet?

73 views 1 answer

asked Mar 19, 2018 by anonymous

What is the work of MOSFET?

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asked Mar 19, 2018 by anonymous

MOSFET uses the electric field of?

MOSFET uses the electric field of?
Last Answer : MOSFET uses the electric field of gate capacitance.

101 views 1 answer

asked Mar 19, 2018 by anonymous

Is the input impedance of MOSFET more than BJT and FET?

Is the input impedance of MOSFET more than BJT and FET?
Last Answer : Yes, the input impedance of MOSFET more than BJT and FET.

544 views 1 answer

asked Mar 19, 2018 by anonymous

Polarity Test of Transformer

Polarity Test of Transformer
Last Answer : Polarity Test of Transformer

309 views 1 answer

asked Apr 30, 2020 by anonymous

Why phasing out and polarity test is carried out on three phase transformer?

Why phasing out and polarity test is carried out on three phase transformer?
Last Answer : The phasing out test is carried out to identify the windings (primary and secondary) of corresponding phase of the three phase transformer. The polarity test is carried out to identify the ... identical polarity of the primary and secondary windings of each phase of the three phase transformer.

420 views 1 answer

asked Jul 27, 2019 by anonymous

What is the need of polarity marking in polyphase AC circuits?

What is the need of polarity marking in polyphase AC circuits?
Last Answer : Need of Polarity Marking in Polyphase AC Circuits: i) Polarity marking of terminals provides reference polarity for better understanding of system, even if the polarity of ac voltage changes ... of current transformers in relay protection circuit and getting desired performance is very difficult.

178 views 1 answer

asked Sep 7, 2018 by anonymous

To determine the polarity of the voltage drop across a resistor, it is necessary to know?

To determine the polarity of the voltage drop across a resistor, it is necessary to know?
Last Answer : To determine the polarity of the voltage drop across a resistor, it is necessary to know direction of current through the resistor.

766 views 1 answer

asked Mar 25, 2018 by anonymous

In D.C. generators the polarity of the interpoles?

Last Answer : In D.C. generators the polarity of the interpoles is the same as that of the main pole ahead.

138 views 1 answer

asked Mar 20, 2018 by anonymous

Do Zener diodes have polarity?

Do Zener diodes have polarity?
Last Answer : Yes, Zener diode have polarity Anode(+) and Cathode (-). And Zener Diode are connected into circuit with their cathode as positive terminal because they operate in reverse bias mode.

151 views 2 answers

asked Dec 9, 2017 by anonymous

In a n-channel MOSFET, an inversion layer is

In a n-channel MOSFET, an inversion layer is (A) accumulation of electrons near the surface of the substrate under the gate (B) accumulation of electrons near the drain (C) accumulation of electrons near the surface (D) accumulation of hole in the substrate
Last Answer : In a n-channel MOSFET, an inversion layer is accumulation of electrons near the surface of the substrate under the gate

111 views 1 answer

asked May 12, 2018 by anonymous

State advantages of MOSFET.

State advantages of MOSFET.
Last Answer : Advantages of MOSFET * MOSFETs provide greater efficiency while operating at lower voltages. * Absence of gate current results in high input impedance. * High switching speed. * They operate at lower ... due to lower resistance of channel. * They are easy to manufacture. * They are portable.

105 views 1 answer

asked May 2, 2020 by anonymous

Plot Vgs vs Vds characteristics of a common source mosfet

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asked Aug 12, 2019 by aku

What parameters are to be considered when choosing a MOSFET?

55 views 0 answers

asked Aug 3, 2019 by anonymous

Describe with neat sketch the construction and working principle of MOSFET.

Describe with neat sketch the construction and working principle of MOSFET.
Last Answer : Construction and working principle of MOSFET: A) Depletion type MOSFET: Construction: The N-channel depletion type MOSFET is formed on P-type silicon substrate with two heavily ... accumulation of electrons and hence more current. Thus the MOSFET is a gate voltage controlled device.

3.5k views 1 answer

asked Jul 25, 2019 by anonymous

State the applications of MOSFET

State the applications of MOSFET
Last Answer : Applications of MOSFET: i) Switching-mode-power-supplies (SMPS) and linear power supplies. ii) Brushless DC motor drives iii) Solid state DC relay iv) Automobile applications v) Stepper motor controller vi) Lighting controls vii) Solenoid drivers viii) Robotics ix) Induction heating

87 views 1 answer

asked Jul 25, 2019 by anonymous

Compare JFET with MOSFET.

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

108 views 1 answer

asked Sep 5, 2018 by anonymous

Describe the operation of N channel enhancement type MOSFET with diagram.

Describe the operation of N channel enhancement type MOSFET with diagram.
Last Answer : As its name indicates, this MOSFET operates only in the enhancement mode and has no depletion mode. It operates with large positive gate voltage only. It does not conduct when the ... of charge carriers attracted to the positive gate. Thus drain current is controlled by the gate potential.

634 views 1 answer

asked Sep 5, 2018 by anonymous

The threshold voltage of an n- channel enhancement mode MOSFET is 0.5V when the device is biased at

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

313 views 1 answer

asked Apr 28, 2018 by anonymous

Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ?

Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ? (A) forward conduction (B) latching (C) forward blocking (D) reverse breakdown
Last Answer : Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ? (A) forward conduction (B) latching (C) forward blocking (D) reverse breakdown

3.2k views 1 answer

asked Apr 28, 2018 by anonymous

Explain switching model of MOSFET.

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asked Mar 10, 2018 by anonymous

Explain MOSFET gate drive circuit and totem pole configuration.

Explain MOSFET gate drive circuit and totem pole configuration.
Last Answer : MOSFET gate drive circuit: The turning on and turning off of MOSFET can be controlled from gate to source voltage signal. If the gate to source voltage of MOSFET exceeds threshold ... this configuration, the two switches (transistors) are used in totem pole arrangement with a comparator.

348 views 1 answer

asked Feb 19, 2018 by anonymous

Explain the formation of parasitic BJT and parasitic diode in Power MOSFET.

Explain the formation of parasitic BJT and parasitic diode in Power MOSFET. Can parasitic diode be used in same power electronics applications?
Last Answer : Parasitic Diode: The parasitic diode is in between drain and source. The MOSFET structure itself contains parasitic diode or body drain diode. This parasitic diode allows the reverse flow of current when the ... of MOSFET as a BJT collector. Parasitic BJT operates in the cut-off region.

2.6k views 1 answer

asked Feb 6, 2018 by anonymous

Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.

Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.
Last Answer : Power MOSFET have high turning on and turning off capability high switching speed of MOSFET is due to the high rate of change of drain voltage. The switching losses of power MOSFET ... lower frequency. Hence, operating frequency of power MOSFET is higher than that of power BJT.

983 views 1 answer

asked Feb 3, 2018 by anonymous

Justify the statement. Antiparallel diode is connected across MOSFET.

Justify the statement. Antiparallel diode is connected across MOSFET.
Last Answer : In MOSFET current is flow from drain to source but when the load is inductive the current may flow in opposite direction. To avoid the opposite flow of current and to protect MOSFET the antiparallel diode is connected across MOSFET.

160 views 1 answer

asked Feb 2, 2018 by anonymous

parallel operation of mosfet can be done more easily as compared to thyristor. why?

parallel operation of MOSFET can be done more easily as compared to thyristor. why?
Last Answer : Parallel operation of MOSFET can be done more easily as compared to thyristor because the resistance of MOSFET is increases with increase in temperature. MOSFET have the positive temperature coefficient. In ... the parallel operation of MOSFET can be done more easily as compared to the thyristor.

300 views 1 answer

asked Dec 7, 2017 by anonymous

Justify. Power MOSFET is operated at high enough gate source voltage to minimize the conduction losses.

Justify. Power MOSFET is operated at high enough gate source voltage to minimize the conduction losses.
Last Answer : MOSFET is metal oxide field effect transistor. MOSFET is a voltage controlled device. MOSFET is majority carrier device. MOSFET are of two one is n-channel MOSFET and p-channel MOSFET. Gate, ... . Hence, power MOSFET is operated at high enough gate-source voltage to minimize the conduction losses.

841 views 1 answer

asked Dec 7, 2017 by anonymous

Explain difference between enhancement MOSFET and depletion type MOSFET.

Explain difference between enhancement MOSFET and depletion type MOSFET.
Last Answer : In enhancement MOSFET channel is not initially exists but in depletion MOSFET channel is already exists. In case of depletion MOSFET if the voltage is applied between drain and source the drain current will flow ... a channel. depletion MOSFET & enhancement MOSFET

548 views 1 answer

asked Nov 14, 2017 by anonymous

Compare BJT, MOSFET and IGBT .

Compare BJT, MOSFET and IGBT .
Last Answer : BJT MOSFET IGBT BJT is a current controlled device. MOSFET is a voltage controlled device. IGBT is a voltage controlled device. The input impedance of BJT is low. ... is minority carrier device. MOSFET is majority carrier device. IGBT is minority carrier device.

448 views 1 answer

asked Nov 10, 2017 by anonymous

is IGBT costlier than BJT and MOSFET?

Last Answer : Yes IGBT is costlier than BJT and MOSFET.

2.6k views 1 answer

asked Sep 29, 2017 by anonymous

Does MOSFET have a second breakdown problem?

Last Answer : No MOSFET do not have a second breakdown problem.

92 views 1 answer

asked Sep 23, 2017 by anonymous

MOSFET are current controlled or voltage controlled devices?

Last Answer : MOSFET are voltage controlled devices.

147 views 3 answers

asked Sep 23, 2017 by anonymous

What are the two types of mosfet?

Last Answer : MOSFETs are of two types namely 1) enhancement type MOSFET or E-MOSFET 2) depletion type MOSFET or D-MOSFET

121 views 2 answers

asked Sep 22, 2017 by anonymous

Why MOSFET is used for low power applications?

Last Answer : MOSFET have high current losses due to High on state resistance. Hence MOSFET is used for low power applications.

113 views 1 answer

asked Sep 22, 2017 by anonymous

Why paralleling of mosfet is easier?

Last Answer : Because of positive temperature coefficient of mosfet the paralleling of mosfet is easier.

71 views 1 answer

asked Sep 22, 2017 by anonymous

Can MOSFET operate at very high frequency?

Last Answer : Yes MOSFET can operate at very high frequency.

102 views 1 answer

asked Sep 22, 2017 by anonymous

Explain the series and parallel operation of MOSFET. Which is suitable and why ?

Explain the series and parallel operation of MOSFET. Which is suitable and why?
Last Answer : Series operation of MOSFET: To increase voltage handling capability MOSFETs are connected in series. When the MOSFETs are connected in series each MOSFET should turn on and turn off ... on and turn off time and transconductance. Each MOSFET should share current equally.

534 views 1 answer

asked Sep 15, 2017 by anonymous

why IGBT is preferred as a power switch over both power BJT and MOSFET?

Last Answer : Because it has a higher switching frequency and heat tolerance.

143 views 1 answer

asked Sep 15, 2017 by anonymous

what is depletion type MOSFET?

What is depletion type MOSFET?..........
Last Answer : Depletion MOSFET: Depletion MOSFET is a MOSFET in which the channel already exists. If we apply a voltage between drain and source then the drain current will flow even if the gate to source ... in figure. The drain current will be reduced as the gate to source voltage made more negative.

188 views 1 answer

asked Sep 15, 2017 by anonymous

anonymous · Answer 1 · 2018-03-19T03:09:42+0000

In MOSFET, the polarity of the inversion layers is the same as that of majority carriers in the source.

In MOSFET, the polarity of the inversion layers is the same as that of?

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