What do you mean by active filter? State its advantages over passive filter . Define pass band & stop band with respect to filter.
Last Answer : Active Filter: Active Filter is formed by using active element along with the passive components. Advantages of Active filter over Passive filter: High value of pass band gain can be obtained. It is ... pass band. Stop Band Filter: The frequency range which is attenuated is known as stop band.
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131 views
1 answer
asked
May 2, 2020
by
anonymous

Define active circuit and passive circuit.
Last Answer : Active circuit: Active Circuit is one which contains at least one source of e.m.f. or energy, is called active circuit. Passive Circuit: Passive Circuit is one which does not contain any source of e.m.f. or energy in it, is called passive circuit.
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76 views
1 answer
asked
Aug 17, 2019
by
anonymous

Differentiate between active and passive transducers
Last Answer : Active Transducer:- A transducer which do not requires external energy source to convert signal from one form to another. Active transducers passes gain. e.g. Thermometer,Thermocuople, bourdon tubes, ... other form. Passive transducer passes loss. e.g. Thermistor, strain gauges, LVDT etc .
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140 views
3 answers
asked
Jul 27, 2019
by
anonymous

What is active and passive network?
Last Answer : Active network is a network which contain one or more than one EMF source. An active network consists of an active element like battery or transistor. Passive network is a ... contain any source of energy. Passive network consists of passive element like resistance, inductance and capacitance.
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132 views
1 answer
asked
Jul 4, 2019
by
anonymous

Define following networks (i) Active (ii) Passive (iii) Unilateral (iv) Bilateral.
Last Answer : An element capable of giving out power or energy to some external device is called an active element. e.g. battery, generator etc. An element which is not an active element and capable of ... : A network consisting of only passive elements i.e. no active element, is called passive network.
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323 views
2 answers
asked
Sep 2, 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
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681 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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743 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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91 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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95 views
2 answers
asked
Sep 27, 2017
by
anonymous
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Last Answer : Active region of BJT act as amplifier.
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122 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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100 views
1 answer
asked
Sep 23, 2017
by
anonymous

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

Last Answer : BJT have three terminals Base, emitter and collector.
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121 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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89 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 : No, BJT is a current controlled device .
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185 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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91 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.
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107 views
1 answer
asked
Sep 10, 2017
by
anonymous

Is being passive / aggressive always the wrong way to handle things?
Last Answer : Where does passive-aggressive fit in with the post above?
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1 view
1 answer
asked
Mar 1
by
anonymous

What causes passive-aggressiveness?
Last Answer : Being in love with self-pity.
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3 views
1 answer
asked
Mar 1
by
anonymous
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A passive network
Last Answer : A passive network has no emf source.
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73 views
1 answer
asked
Apr 26, 2018
by
anonymous

A passive network is one which contains?
Last Answer : A passive network is one which contains no source of e.m.f. in it.
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573 views
1 answer
asked
Mar 25, 2018
by
anonymous

Use Voltmeter, ammeter, wattmeter to determine active, reactive and apparent power consumed in given R-L series circuit, draw phasor diagram.
Last Answer : Practical Significance In the industry environment Electrical Engineering diploma graduate are expected to measure basic parameters like voltage, frequency, time period etc. for R-L series circuits. Therefore ... /varying L. 7. Draw the phasor diagram for each of reading for verification.
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520 views
1 answer
asked
Jan 1, 2021
by
anonymous

Write example of each type (i) Primary transducer (ii) Active transducer (iii) Electrical transducer (iv) Digital transducer
Last Answer : (i) Active transducer:-Thermocouple, piezoelectric, photovoltaic cell (ii) Primary transducer:- Bourdon tube, bellows, (iii) Electrical transducer.:- LVDT,RVDT, Hall effect, strain gauge, ... , optical pyrometer, radiation pyrometer (iv) Digital transducer:- Linear Encoder, digital taco generator
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173 views
2 answers
asked
Aug 5, 2019
by
anonymous
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In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals
Last Answer : In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage
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137 views
1 answer
asked
Apr 28, 2018
by
anonymous

The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is?
Last Answer : The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is 6 kVAR.
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748 views
1 answer
asked
Mar 25, 2018
by
anonymous

The ratio of active power to apparent power is known as____ factor.
Last Answer : The ratio of active power to apparent power is known as power factor.
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935 views
1 answer
asked
Mar 25, 2018
by
anonymous
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Active power and apparent power are represented by?
Last Answer : Active power and apparent power are represented by kW and kVA.
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104 views
1 answer
asked
Mar 19, 2018
by
anonymous
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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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253 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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129 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
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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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268 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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788 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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760 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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193 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
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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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553 views
1 answer
asked
Mar 19, 2018
by
anonymous

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

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
