Why the cutoff frequency is taken for 3db?
Show More
56 views
0 answers
asked
Mar 10, 2018
by
anonymous

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
Show More
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)
Show More
742 views
2 answers
asked
Mar 10, 2018
by
anonymous

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

Last Answer : Yes BJT have internal capacitances.
Show More
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 )
Show More
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.
Show More
94 views
2 answers
asked
Sep 27, 2017
by
anonymous

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

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

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

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

Last Answer : BJT have three terminals Base, emitter and collector.
Show More
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.
Show More
364 views
2 answers
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
Show More
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.
Show More
70 views
1 answer
asked
Sep 10, 2017
by
anonymous

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

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

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

Last Answer : Transformer coupled amplifiers Direct coupled amplifiers Multistage amplifiers Darlington amplifiers Emmiter follower
Show More
89 views
1 answer
asked
Sep 10, 2017
by
anonymous

what are bjt transistors?
Last Answer : Bjt transistor is a type of transistor which uses both electrons and hole charge carrier.bjts are used as switches and amplifiers.They amplify currents.
Show More
107 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.
Show More
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).
Show More
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.
Show More
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
Show More
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.
Show More
263 views
2 answers
asked
Sep 5, 2018
by
anonymous
.jpg)
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.
Show More
780 views
1 answer
asked
Sep 5, 2018
by
anonymous
.jpg)
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.
Show More
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.
Show More
758 views
1 answer
asked
Sep 5, 2018
by
anonymous
.jpg)
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
Show More
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
Show More
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.
Show More
2.7k views
1 answer
asked
Mar 19, 2018
by
anonymous
.jpg)
What is a BJT amplifier?
Last Answer : Bilpolar Juntion transistor , this fuction is control the current
Show More
100 views
1 answer
asked
Mar 19, 2018
by
anonymous

How can BJT be used as an amplifier?
Show More
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.
Show More
548 views
1 answer
asked
Mar 19, 2018
by
anonymous

What is the difference between beta and forced beta for BJT?
Show More
554 views
0 answers
asked
Feb 20, 2018
by
anonymous

Explain open emitter BJT drive circuit.
Last Answer : open emitter BJT drive circuit:
Show More
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.
Show More
2.6k views
1 answer
asked
Feb 6, 2018
by
anonymous
.jpg)
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.
Show More
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.
Show More
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.
Show More
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.
Show More
295 views
1 answer
asked
Sep 15, 2017
by
anonymous

Last Answer : Because it has a higher switching frequency and heat tolerance.
Show More
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.
Show More
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
Show More
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
Show More
67 views
0 answers
asked
Apr 5, 2018
by
anonymous
.jpg)
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.
Show More
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.
Show More
135 views
1 answer
asked
Jan 5, 2018
by
anonymous

Car-savvy jellies: what's the optimal $ cutoff for buying a used car?
Last Answer : I have bought a number of used cars. I would never buy any car that I knew needed work. I always buy a Toyota or Honda. They run forever.
Show More
1 view
1 answer
asked
Mar 5
by
anonymous

The cutoff for being able to say this in a movie?
Last Answer : Well, that's it, isn't it? You want to accurately portray kids, who use an abundance of inappropriate humor, while still adhering to politically correct tastes. Seems like an impossibility. I am annoyed by ... the fact that, in E.T., the Extra Terrestrial, the boy calls his brother penis breath .
Show More
0 views
1 answer
asked
Mar 1
by
anonymous

What is the cutoff date for wishing people a happy new year?
Last Answer : I think it is still early enough in the year to be wishing people a good year. I don't think wishing people a happy new year is the same as wishing people a merry Christmas, for example. Christmas is one ... Don't let it bother you so much. It will fizzle out soon. Until then, have a good new year.
Show More
1 view
1 answer
asked
Feb 26
by
anonymous
