MOSFET uses the electric field of?

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asked Mar 19, 2018 by anonymous

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Briefly describe the electric field of a static charge.

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asked Apr 29, 2018 by anonymous

The ability of materials to become polarized under an applied electric field is called _______

The ability of materials to become polarized under an applied electric field is called _______ A) Ferroelectricity B) Paraelectricity C) Polectricity D) None of these

Last answer: The ability of materials to become polarized under an applied electric field is called Paraelectricity

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asked Mar 14, 2018 by anonymous

What is the direction of the induced electric field?

Last answer: It is in opposite direction to the one that produced it.

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asked Mar 14, 2018 by anonymous

What is the direction of the electric field?

Last answer: Electric field is at right angle widh flow of current (right hand rule).

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4

asked Apr 29, 2018 by anonymous

The electric field inside a hollow conducting sphere ________

The electric field inside a hollow conducting sphere ________ A) Depends on the diameter of the sphere B) Varies according to the direction of earth’s magnetic poles C) Is zero D) None of these

Last answer: The electric field inside a hollow conducting sphere Is zero

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5

asked Mar 14, 2018 by anonymous

Can the electric field between two positive charges be zero?

Last answer: It can only if they have equal charges.

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6

asked Mar 18, 2018 by anonymous

An electric motor in which both stator field and rotor rotates with same speed is called?

Last answer: An electric motor in which both stator field and rotor rotates with same speed is called synchronous motor.

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7

asked Mar 14, 2018 by anonymous

Is electric potential zero when electric field is zero?

Last answer: Yes .If electric field is zero then electric potential is zero , not even one.

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8

asked Mar 10, 2018 by anonymous

How can a magnetic field be used to generate an electric current?

Last answer: Magnetic field can be used to generate electric current on a condition that it is on a rate of changing magnetic flux. (Faraday's law)

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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 the use of a Mosfet?

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asked Mar 19, 2018 by anonymous

What is the work of MOSFET?

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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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13

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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14

asked Jun 18, 2018 by anonymous

A certain power MOSFET has a maximum junction temperature specification of 1500o C, a junction-to-case

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, then the maximum allowable power dissipation in 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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15

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

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16

asked Aug 13, 2017 by Zeeshan

what are the uses of MOSFET ?

Last answer: Choppers and inverters and where high switching frequency is required.

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17

asked Mar 19, 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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18

asked Mar 19, 2018 by anonymous

What is meant by pinch off voltage in MOSFET?

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19

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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asked Mar 19, 2018 by anonymous

What is meant by body effect in MOSFET?

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21

asked Mar 19, 2018 by anonymous

How can we check a Mosfet?

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22

asked Mar 19, 2018 by anonymous

Why Mosfet is called Mosfet?

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23

asked Jul 2, 2019 by anonymous

What are the uses of Thermistors ?

Last answer: Thermistors are frequently used in electronic circuits in which it is desired to provide temperature measurement, temperature control, and temperature compensation.

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24

asked Apr 29, 2018 by anonymous

The electrode rod used for welding uses a coating on it

Last answer: The electrode rod used for welding uses a coating on it to give a vapour to serve as a shielding gas to protect the weld area from atmospheric contamination and to provide slag to protect the welded area

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25

asked May 8, 2018 by anonymous

A 17 inch personal computer uses approximately 150 watts in an hour. If you have same

A 17 inch personal computer uses approximately 150 watts in an hour. If you have same computer on for only 4 minutes (for checking e-mail) what would be the power consumption? (A) 0.1 kW (B) 0.04 kW (C) 0.01 kW (D) None of the above

Last answer: A 17 inch personal computer uses approximately 150 watts in an hour. If you have same computer on for only 4 minutes (for checking e-mail) what would be the power consumption? (A) 0.1 kW (B) 0.04 kW (C) 0.01 kW (D) None of the above

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26

asked May 8, 2018 by anonymous

A 100-watt light bulb turned on for 8 hours uses :

A 100-watt light bulb turned on for 8 hours uses : (A) 800 Wh (B) 0.8 kWh (C) 8 kWh (D) None of the above

Last answer: A 100-watt light bulb turned on for 8 hours uses : (A) 800 Wh (B) 0.8 kWh (C) 8 kWh (D) None of the above

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27

asked Mar 21, 2018 by anonymous

A universal RLC bridge uses?

Last answer: A universal RLC bridge uses Maxwell Wein bridge for measurement of inductance and modified De Santy's bridge for measurement of capacitance.

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28

asked Mar 30, 2020 by anonymous

A magnetic circuit has effective iron length of 100 cm and it is wound with 800 turns of wire carries 1 A. Find the magnetic field strength.

Last answer: magnetic field strength

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29

asked May 1, 2018 by anonymous

In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation,

In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as (1) synchronous motor (2) synchronous generator (3) asynchronous motor (4) asynchronous generator

Last answer: In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as synchronous generator

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310 views 1 answer

30

asked Apr 29, 2018 by anonymous

Which of the following laws relates the magnetic field to the magnitude, direction, length, and proximity

Which of the following laws relates the magnetic field to the magnitude, direction, length, and proximity of the electric current? A) Lenz’s law B) Faraday’s law C) Biot–Savart law D) None of these

Last answer: Which of the following laws relates the magnetic field to the magnitude, direction, length, and proximity of the electric current? A) Lenz’s law B) Faraday’s law C) Biot–Savart law D) None of these

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31

asked Apr 28, 2018 by anonymous

Which of the following statements is not characteristic of a static magnetic field?

Which of the following statements is not characteristic of a static magnetic field? (A) It is solenoidal. (B) It is conservative. (C) It has no sinks or sources. (D) Flux lines are always closed.

Last answer: Which of the following statements is not characteristic of a static magnetic field? (A) It is solenoidal. (B) It is conservative. (C) It has no sinks or sources. (D) Flux lines are always closed.

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32

asked Mar 21, 2018 by anonymous

To avoid the effect of stray magnetic field in A.C. bridges we can use?

Last answer: To avoid the effect of stray magnetic field in A.C. bridges we can use magnetic screening.

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110 views 1 answer

33

asked Mar 21, 2018 by anonymous

A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave?

Last answer: A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave will be of 5 Hz.

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34

asked Mar 21, 2018 by anonymous

Flashing the field of D.C. generator means?

Last answer: Flashing the field of D.C. generator means creating residual magnetism by a D.C. source.

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35

asked Mar 20, 2018 by anonymous

If the field of a D.C. shunt motor gets opened while motor is running?

Last answer: If the field of a D.C. shunt motor gets opened while motor is running the motor will attain dangerously high speed.

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36

asked Mar 20, 2018 by anonymous

In a shaded pole single-phase motor, the revolving field is produced by the use of?

Last answer: In a shaded pole single-phase motor, the revolving field is produced by the use of shading coils.

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37

asked Mar 20, 2018 by anonymous

If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will?

Last answer: If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will stop.

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38

asked Mar 18, 2018 by anonymous

If the field of synchronous motor is under excited, power factor will be?

Last answer: If the field of synchronous motor is under excited, power factor will be lagging.

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39

asked Jul 25, 2019 by anonymous

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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40

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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41

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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42

asked Apr 28, 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

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43

asked Feb 6, 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.

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44

asked Feb 3, 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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692 views 1 answer

45

asked Sep 22, 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

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76 views 2 answers

46

asked Sep 15, 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.

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47

asked May 7, 2020 by anonymous

State advantages of rotating field type alternators.

Last answer: Advantages of Rotating Field Type Alternator: 1) For high-voltage alternator, large space is required to accommodate conductors with insulation, as high voltage is induced in them. If field poles are placed ... is kept rotating. 8) Rotating field is comparatively light and can run with high speed.

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48

asked Jun 11, 2019 by anonymous

Energy stored in electrostatic field of capacitance formula

Last answer: Energy stored in electrostatic field of capacitance formula

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49

asked Mar 25, 2018 by anonymous

A field of force can exist only between?

Last answer: A field of force can exist only between two ions.

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anonymous · Answer 1 · 2018-03-19T03:03:55+0000

answered Mar 19, 2018 by anonymous

MOSFET uses the electric field of gate capacitance.

MOSFET uses the electric field of?

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