Draw symbol of NPN and PNP transistors.
Last Answer : symbol of NPN and PNP transistors
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218 views
1 answer
asked
May 16, 2020
by
anonymous
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An FET is a better chopper than a BJT because it has (A) lower offset voltage (B) higher series ON resistance (C) lower input current (D) higher input impedance
Last Answer : An FET is a better chopper than a BJT because it has lower offset voltage
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678 views
1 answer
asked
Apr 26, 2018
by
anonymous

What is a BJT?
Last Answer : Bipolar Junction Transistor (BJT): BJT is a Bipolar device. (Uses both electrons and holes charge carrier for current conduction) Two Junctions (Emitter junction & collector ... mode (Current amplification) Cutoff mode (Open switch) Saturation mode (Close switch)
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742 views
2 answers
asked
Mar 10, 2018
by
anonymous

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 : Yes BJT have internal capacitances.
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90 views
1 answer
asked
Sep 27, 2017
by
anonymous

Last Answer : BJT act as switch in saturation and cutoff region ( ON state in saturation region and OFF state in cut-off region )
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127 views
2 answers
asked
Sep 27, 2017
by
anonymous

Last Answer : In cut-off region of BJT both the emitter-base junction and collector-base junction are reverse biased.
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94 views
2 answers
asked
Sep 27, 2017
by
anonymous

Last Answer : Active region of BJT act as amplifier.
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121 views
2 answers
asked
Sep 27, 2017
by
anonymous

Last Answer : Active , Saturation , Cut-off region of operations in BJT.
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2.7k views
2 answers
asked
Sep 27, 2017
by
anonymous

Last Answer : Yes BJT have second breakdown problem.
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99 views
1 answer
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Sep 23, 2017
by
anonymous

Last Answer : BJT is current controlled device.
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144 views
4 answers
asked
Sep 23, 2017
by
anonymous

Last Answer : BJT have three terminals Base, emitter and collector.
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120 views
1 answer
asked
Sep 21, 2017
by
anonymous

Last Answer : In BJT there is movement of electrons and holes accros the junctions which is basicaly current flow.
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364 views
2 answers
asked
Sep 10, 2017
by
anonymous
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Last Answer : When Q-point is at cut off region means it is just above the horizontal axis VCE
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110 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : The proper flow of zero signal collector current and the maintenance of the proper collector emmiter voltage during passage of single called as transistor biasing
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87 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : Beta is the current gain which is the ratio of collector current to base current.
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70 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : BJT control the flow of electron so it is a active device.
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131 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : No, BJT is a current controlled device .
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184 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : Bipolar junction transistor
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94 views
1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : Transformer coupled amplifiers Direct coupled amplifiers Multistage amplifiers Darlington amplifiers Emmiter follower
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89 views
1 answer
asked
Sep 10, 2017
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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247 views
1 answer
asked
Jun 24, 2020
by
anonymous

List specification of BJT.
Last Answer : * The bipolar junction transistor (BJT) has small signal current gain, α (hfb). * Maximum collector current Ic (max). * Maximum collector to emitter voltage, VCE (max). * Collector to emitter ... . * Collector to emitter cut off voltage, VCEO. * Base emitter saturation voltage, VBE (sat).
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113 views
1 answer
asked
May 2, 2020
by
anonymous

State reason BJT is called as bipolar junction transistor.
Last Answer : BJT is called bipolar junction transistor because in BJT current conduction takes place due to majority as well as minority charge carriers.
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5.1k views
1 answer
asked
Jul 24, 2019
by
anonymous

List configurations of BJT.
Last Answer : Configurations of BJT : 1) Common Base (CB) configuration 2) Common Emitter (CE) configuration 3) Common Collector (CC) configuration
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67 views
1 answer
asked
Jul 10, 2019
by
anonymous

State the need of biasing of BJT.
Last Answer : Need of biasing: The basic need of transistor biasing is to keep the base-emitter (B-E) junction properly forward biased and the collector-emitter (C-E) junction properly reverse biased ... transistor biasing is necessary for normal and proper operation of transistor to be used for amplification.
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263 views
2 answers
asked
Sep 5, 2018
by
anonymous

Draw circuit diagram of voltage divider biasing list two advantages of voltage divider biasing of BJT.
Last Answer : Two advantages of voltage divider biasing of BJT. 1. It is very simple method of transistor biasing. 2. The biasing conditions can be very easily set. 3. there is no loading of ... 5. The resistor RE introduces a negative feedback. So all the advantages of negative feedback are obtained.
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780 views
1 answer
asked
Sep 5, 2018
by
anonymous

Compare BJT with FET
Last Answer : FET BJT It is unipolar device i.e. current in the device is carried either by electrons or holes It is bipolar device i.e. current in the device is carried either by ... from minority- carrier storage effects & therefore has lower switching speeds & cut-off frequencies.
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70 views
1 answer
asked
Sep 5, 2018
by
anonymous

Compare between BJT and FET on the basis of (i) Biolar/Unipolar (ii) Tharmal Runaway (iii) Noise (iv) Applications
Last Answer : Parameter BJT FET Bipolar/Unipolar It is bipolar device i.e. current in this device is carried by electrons and holes. It is unipolar device i.e. current ... in oscilloscopes, electronic voltmeters and other measuring and testing equipment because of their high input impedance.
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758 views
1 answer
asked
Sep 5, 2018
by
anonymous

If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be A) 0.98 B) 0.41 C) 59 D) 55
Last Answer : If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be 0.98
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192 views
1 answer
asked
Jun 18, 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

What is the difference between BJT and FET?
Last Answer : BJT is a current opperated transistor while FET is a field opperated transistor.
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2.7k views
1 answer
asked
Mar 19, 2018
by
anonymous

What is a BJT amplifier?
Last Answer : Bilpolar Juntion transistor , this fuction is control the current
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100 views
1 answer
asked
Mar 19, 2018
by
anonymous

How can BJT be used as an amplifier?
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86 views
0 answers
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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548 views
1 answer
asked
Mar 19, 2018
by
anonymous
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What is the difference between beta and forced beta for BJT?
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554 views
0 answers
asked
Feb 20, 2018
by
anonymous
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Explain open emitter BJT drive circuit.
Last Answer : open emitter BJT drive circuit:
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262 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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984 views
1 answer
asked
Feb 3, 2018
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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449 views
1 answer
asked
Nov 10, 2017
by
anonymous

What is the value of Beta in power BJT?
Last Answer : The beta value in power BJT is 5 to 10.
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106 views
1 answer
asked
Sep 20, 2017
by
anonymous

Explain the on state losses in power BJT.
Last Answer : On state losses in power BJT: Transistor have four types of losses one is turn on state losses second is turn off state losses third is turn on switching losses and fourth is turn ... ON = VCE sat x IC With increasing collector current collector to emitter saturation voltage increases.
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295 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

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

FET is advantageous in comparison with BJT because of A) High input impedance B) High noise C) High gain bandwidth product D) Its current controlled behavior
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178 views
0 answers
asked
Apr 9, 2018
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

Is BJT unipolar or bipolar Why?
Last Answer : Bipolar Junction Transistor (BJT) is a bipolar device because current is carried by both holes and electrons hence it is called bipolar.
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113 views
1 answer
asked
Jan 5, 2018
by
anonymous

Why BJT is a current control device?
Last Answer : BJT have three terminal emitter, base and collector. The collector current is the output current. The collector current (Ic) is controlled by base current hence BJT is called current controlled device.
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135 views
1 answer
asked
Jan 5, 2018
by
anonymous

Power transistors with heat sink are fixed by
Last Answer : Power transistors with heat sink are fixed by Fastening
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136 views
1 answer
asked
May 14, 2018
by
anonymous

For a symmetrical emitter coupled differential amplifier using transistors of current gain 100, constant current source of 2 mA and with Vcc=10 V, differential input resistance in kOhm is about A) 2.5 B) 5 C) 10 D) 50
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112 views
0 answers
asked
Apr 5, 2018
by
anonymous
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In IC, transistors are utilised as diodes.To get highest breakdown voltage for such diode, it is adjusted to have A) Ie=0 B) Ic=0 C) Vcb=0 D) Vce=0
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75 views
0 answers
asked
Apr 5, 2018
by
anonymous
