Last Answer : Yes IGBT is costlier than BJT and MOSFET.
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2.6k views
1 answer
asked
Sep 29, 2017
by
anonymous

Last Answer : No MOSFET do not have a second breakdown problem.
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93 views
1 answer
asked
Sep 23, 2017
by
anonymous

Last Answer : MOSFET are voltage controlled devices.
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153 views
3 answers
asked
Sep 23, 2017
by
anonymous

Last Answer : MOSFETs are of two types namely 1) enhancement type MOSFET or E-MOSFET 2) depletion type MOSFET or D-MOSFET
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122 views
2 answers
asked
Sep 22, 2017
by
anonymous

Last Answer : MOSFET have high current losses due to High on state resistance. Hence MOSFET is used for low power applications.
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113 views
1 answer
asked
Sep 22, 2017
by
anonymous

Last Answer : Because of positive temperature coefficient of mosfet the paralleling of mosfet is easier.
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73 views
1 answer
asked
Sep 22, 2017
by
anonymous

Last Answer : Yes MOSFET can operate at very high frequency.
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104 views
1 answer
asked
Sep 22, 2017
by
anonymous

what are the uses of MOSFET ?
Last Answer : Choppers and inverters and where high switching frequency is required.
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100 views
1 answer
asked
Aug 13, 2017
by
Zeeshan

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.
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106 views
1 answer
asked
May 2, 2020
by
anonymous
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67 views
0 answers
asked
Aug 12, 2019
by
aku

What parameters are to be considered when choosing a MOSFET?
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55 views
0 answers
asked
Aug 3, 2019
by
anonymous
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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.
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3.6k views
1 answer
asked
Jul 25, 2019
by
anonymous

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
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89 views
1 answer
asked
Jul 25, 2019
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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109 views
1 answer
asked
Sep 5, 2018
by
anonymous

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.
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659 views
1 answer
asked
Sep 5, 2018
by
anonymous

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
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149 views
1 answer
asked
Jun 18, 2018
by
anonymous

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
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112 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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319 views
1 answer
asked
Apr 28, 2018
by
anonymous

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
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3.2k views
1 answer
asked
Apr 28, 2018
by
anonymous

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.
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218 views
3 answers
asked
Mar 19, 2018
by
anonymous

What is the transconductance of a MOSFET?
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60 views
0 answers
asked
Mar 19, 2018
by
anonymous

What is meant by pinch off voltage in MOSFET?
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102 views
0 answers
asked
Mar 19, 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

What is meant by body effect in MOSFET?
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66 views
0 answers
asked
Mar 19, 2018
by
anonymous

How can we check a Mosfet?
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72 views
0 answers
asked
Mar 19, 2018
by
anonymous

What is the use of a Mosfet?
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52 views
0 answers
asked
Mar 19, 2018
by
anonymous

Why Mosfet is called Mosfet?
Last Answer : Why Mosfet is called Mosfet?
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74 views
1 answer
asked
Mar 19, 2018
by
anonymous

What is the work of MOSFET?
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75 views
0 answers
asked
Mar 19, 2018
by
anonymous

In MOSFET, the polarity of the inversion layers is the same as that of?
Last Answer : In MOSFET, the polarity of the inversion layers is the same as that of majority carriers in the source.
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487 views
1 answer
asked
Mar 19, 2018
by
anonymous

MOSFET uses the electric field of?
Last Answer : MOSFET uses the electric field of gate capacitance.
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101 views
1 answer
asked
Mar 19, 2018
by
anonymous

Is the input impedance of MOSFET more than BJT and FET?
Last Answer : Yes, the input impedance of MOSFET more than BJT and FET.
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553 views
1 answer
asked
Mar 19, 2018
by
anonymous

Explain switching model of MOSFET.
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75 views
0 answers
asked
Mar 10, 2018
by
anonymous

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.
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349 views
1 answer
asked
Feb 19, 2018
by
anonymous

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.
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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.
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.
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985 views
1 answer
asked
Feb 3, 2018
by
anonymous

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.
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161 views
1 answer
asked
Feb 2, 2018
by
anonymous

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.
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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.
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.
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844 views
1 answer
asked
Dec 7, 2017
by
anonymous
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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
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550 views
1 answer
asked
Nov 14, 2017
by
anonymous

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.
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452 views
1 answer
asked
Nov 10, 2017
by
anonymous

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.
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535 views
1 answer
asked
Sep 15, 2017
by
anonymous

Last Answer : Because it has a higher switching frequency and heat tolerance.
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143 views
1 answer
asked
Sep 15, 2017
by
anonymous

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.
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191 views
1 answer
asked
Sep 15, 2017
by
anonymous

What is enhancement MOSFET?...............
Last Answer : Enhancement MOSFET: There are two types of MOSFET one is enhancement MOSFET and second is depletion MOSFET. In enhancement MOSFET channel is created by applying threshold voltage between gate and source ... mode. The enhancement MOSFET will not conduct if the gate to source voltage is zero.
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175 views
1 answer
asked
Sep 15, 2017
by
anonymous

Last Answer : ON state losses of IGBT is less as compared to MOSFET and BJT.
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143 views
1 answer
asked
Sep 13, 2017
by
anonymous

Last Answer : No, MOSFET is not the curent controlled device. The current between drain and source which is drain current is controlled by applying a voltage between gate and source hence MOSFET is a voltage controlled device.
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203 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : already answered here is mosfet current controlled device?
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173 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : MOSFET provides better efficiency at high frequency and its high speed switching losses are less hence MOSFET is used for high frequency.
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115 views
1 answer
asked
Sep 10, 2017
by
anonymous

Compared to MOSFET operational amplifier, BJT operational amplifier has A) Higher input resistance B) Higher slew rate C) Lower input current D) Higher voltage gain
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67 views
0 answers
asked
Apr 5, 2018
by
anonymous

What is MOSFET ?
Last Answer : The full name of Mosfet is Metal oxide semiconductor field effect transistor. The 'gate' of the mosfet is covered with a thin coating of silicon dioxide , which creates capacitors between the ... is a three-ended semiconductor device whose current flows through the flow of electrons or halves .
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1 view
1 answer
asked
Jan 28
by
anonymous
