424 views

1 Answer

Answer :

Q pointit is nothing but operating point of transistor which can gives the information about the transistor working in active cutoff or saturation region to the Faithful amplification we have to specified the position of q. Biasing transistor biasing the proper flow of zero signal collector current and the maintenance of proper collector emitter voltage during the passage of signal is known as transistor biasing
Like 0 like

Please log in or register to answer this question.

Related questions

116 views

Last Answer : It is an operating point of transistor.which gives the information of transistor In which region is working

1 answer
163 views

Last Answer : The operating point of devices is known as Q point (quiescent point) Q point are the values of voltages and currents of a circuit when no signal is present.

1 answer
115 views

Last Answer : it is the kircjohoffs Voltage law it can be defined as stated that the summation of applied voltage in loop which follows Ohm's law is equal to the voltage drop in the circuit

2 answers
99 views

Last Answer : as we knowthat capacitor only allow AC current Rs components grounded that components which are coming in the DC form we have to use capacitor capacitor only pass the AC components which have to be amplifier

1 answer
112 views

Last Answer : the RC coupled amplifier are using the following applications first in public address amplifier system  tape recorders TV VCR and CD players stereo amplifier  and these are the voltage amplification amplifiers

1 answer
90 views

Last Answer : the main components of the circuit are as follows register capacitor an inductor and the supply voltage our current source.

1 answer
7 views

Description : The seven segment arrangement for numerical display on consoles, test meters and other applications can be either ________________. A. UJT or BJT B. BCD or OCD C. JFET or IGFET D. LED or LCD

Last Answer : Answer: D

1 answer
3 views

Description : Power BJT is a current controlled device. Why?

Last Answer : Because the output (collector) current can be controlled by base current.

1 answer
11 views

Description : why the bjt is known as current controlled device and fet is known as voltage controlled device ?

Last Answer : Ans- 1. In BJT because of the current the output will vary. 2. Where as in FET by means of Voltage the output is varied.

1 answer
42 views

Description : Which is the most suitable power device for high frequency ( more 100 kHz) switching application? a) Power MOSFET b) BJT c) SCR d) UJT

Last Answer : Ans: Power MOSFET

1 answer
8 views

Description : A modern power semiconductor device IGBT is combines the characteristics of a) BJT and MOSFET b) FCT and GTO c) SCR and MOSFET d) SCR and BJT

Last Answer : Ans: BJT and MOSFET

1 answer
118 views

Description : Draw the output characteristics of BJT in CE configuration and label various regions on it.

Last Answer :  output characteristics of BJT in CE configuration 

1 answer
23 views

Description : State the applications of BJT.

Last Answer : Applications of BJT: 1. As a switch 2. As an amplifier 3. As a multivibrator 4. As a oscillator 5. As a timer circuit 6. As a Logic circuits 7. Delay circuits

1 answer
163 views

Description : Draw the construction of BJT (NPN) and explain its working principle. State and explain different operating regions.

Last Answer : Construction of BJT (NPN): Working of NPN Transistor : The circuit diagram of the NPN transistor is shown in the figure below. The forward biased is applied across the emitter-base ... Zero with input current is Zero transistor in cut off. In this region transistor act as open switch

1 answer
15 views

Description : Define the following with respect to BJT. (i) Input resistance (ii) Output resistance

Last Answer : Input resistance: It is the ratio of small change in emitter -to-base voltage(∆VEB) to the resulting change in emitter current (∆IE) for a constant collector to base voltage(VCB) ... of BJT is ratio of voltage between output terminal and common terminal to current through output terminal. 

1 answer
277 views

Description : 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. 

1 answer
33 views

Description : Name two types of BJT &draw their symbols. 

Last Answer : Two types of BJT: * NPN * PNP 

1 answer
277 views

Description : List the types of coupling used in BJT amplifier. 

Last Answer : Types of coupling used in BJT amplifier: i. Resistance capacitance (RC)coupling ii. Impedance coupling iii. Transformer coupling iv. Direct coupling

1 answer
181 views

Description : Comparison of three configuration of BJT

Last Answer : Parameter Common Base(CB) Common Emitter (CE) Common collector (CC) Input terminal  Emitter Base Base Common terminal Base Emitter Collector Output terminal Collector Collector Emitter Gain factor Alpha(Ic/Ie) Beta(Ic/Ib) Gamma(Ie/Ib)

1 answer
56 views

Description : Comparison of BJT and 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 both ... is comparatively more noisy. It is relatively immune to radiation. It is susceptible to radiation

2 answers
242 views

Description : Draw circuit diagram of two stage RC coupled amplifier using BJT

Last Answer : BJT - To amplify input signal. R1 & R2 = Biasing resistor to provide DC biasing voltage RE = Emitter resistor to control gain RL = Load resistor to carry load current Cin = Cout = Coupling capacitors to block DC CE = emitter bypass resistor

1 answer
62 views

Description : Draw symbol of NPN transistor and state three configurations of transistor (BJT)

Last Answer : Configuration - Common Emitter Common Collector Common Base

1 answer
155 views

Description : 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).

1 answer
5.1k views

Description : 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.

1 answer
2.7k views

Description : Identify type of BJT configuration having following features : (i) BJT configuration having the least current gain. (ii) KIT configuration called as voltage follower. (iii) BJT ... configuration suitable for voltage amplification. (vi) BJT configuration having the least output impedance.  

Last Answer : (i) BJT configuration having the least current gain : Common Base Configuration  (ii) KIT configuration called as voltage follower: Common Collector Configuration  (iii) BJT ... Emitter Configuration  (vi) BJT configuration having the least output impedance: Common Collector Configuration

1 answer
76 views

Description : List configurations of BJT. 

Last Answer : Configurations of BJT : 1) Common Base (CB) configuration 2) Common Emitter (CE) configuration 3) Common Collector (CC) configuration

1 answer
286 views

Description : 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. 

2 answers
807 views

Description : 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. 

1 answer
71 views

Description : 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. 

1 answer
764 views

Description : 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.

1 answer
217 views

Description : Compare BJT common base configuration with common collector configuration on the basis of (i) Current gain (ii) Voltage gain (iii) Input impedance (iv) Output impedance

Last Answer : Parameter Common Base Common Collector Current gain Low (About 1) High (1+β) Voltage gain High 1  Input impedance  Low High Output impedance High Low

1 answer
197 views

Description :  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 

1 answer
485 views

Description : In a BJT circuit a pnp transistor is replaced by npn transistor. To analyse the new circuit (1) All calculations done earlier have to be repeated (2) Replace all calculated voltages by ... all calculated currents by reverse values (4) Replace all calculated voltages and currents by reverse values 

Last Answer : In a BJT circuit a pnp transistor is replaced by npn transistor. To analyse the new circuit  Replace all calculated voltages and currents by reverse values 

1 answer
453 views

Description : A bipolar junction transistor (BJT) is used as a power control switch by biasing it in the cut-off region (OFF state) or in the saturation region (ON state). In the ON state, for ... base-collector junction is reverse biased (D) both the base-emitter and base-collector junctions are forward biased

Last Answer : A BJT is as a power control switch by biasing it in cut-off region (OFF state) or in the saturation region (ON state). In  ON state, for BJT both the base-emitter and base- collector junctions are forward biased

2 answers
364 views

Description : As compared to power MOSFET, a BJT has  (a) Lower switching losses but higher conduction losses (b) Higher switching losses and higher conduction losses (c) Higher switching losses but lower conduction losses (d) Lower switching losses and lower conduction losses. 

Last Answer : As compared to power MOSFET, a BJT has Higher switching losses but lower conduction losses 

1 answer
198 views

Description : For the active mode BJT operation (A) Emitter Base Junction is Forward Biased and Collector Base Junction is Forward Biased (B) Emitter Base Junction is Reverse Biased and Collector Base Junction ... Biased (D) Emitter Base Junction is Reverse Biased and Collector Base Junction is Forward Biased

Last Answer : For the active mode BJT operation Emitter Base Junction is Forward Biased and Collector Base Junction is Reverse Biased.

2 answers
92 views

Description : In BJT, the common emitter gain β is (A) desired to have large value (B) desired to have small value (C) desired to have moderate value (D) the value need not be controlled

Last Answer : In BJT, the common emitter gain β is desired to have large value.  β is the Current gain factor also called transport factor. 

2 answers
75 views

Description : What is an emitter follower BJT circuit ? (A) Common Collector Amplifier (B) Common Emitter Amplifier (C) Common Base Amplifier (D) None of the above

Last Answer : What is an emitter follower BJT circuit ? (A) Common Collector Amplifier (B) Common Emitter Amplifier (C) Common Base Amplifier (D) None of the above

1 answer
64 views

Description : In BJT circuits, bulk of the gain is provided by (A) CE configuration (B) CB configuration (C) CC configuration (D) It is not certain

Last Answer : In BJT circuits, bulk of the gain is provided by CE configuration

1 answer
3.2k views

Description : 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

1 answer
681 views

Description : 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

1 answer
99 views

Description : The second break down in power BJT occurs due to (a) The first break down and the formation of hot spot inside (b) excessive collector current and low collector emitter voltage (c) excessive base current and high collector emitter voltage (d) none of thee above

0 answers
180 views

Description : 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

0 answers
67 views

Description : 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

0 answers
215 views

Description : What are the main constructional differences between a MOSFET and a BJT? What effect do they have on the current conduction mechanism of a MOSFET? 

Last Answer : A MOSFET like a BJT has alternating layers of p and n type semiconductors. However, unlike BJT the p type body region of a MOSFET does not have an external electrical connection. The gate ... .  Distributed under Creative Commons Attribution-ShareAlike - CC BY-SA. Version 2 EE IIT, Kharagpur

1 answer
2.7k views

Description : What is the difference between BJT and FET?

Last Answer : BJT  is  a  current  opperated   transistor  while  FET   is  a  field   opperated  transistor.

1 answer
104 views

Description : What is a BJT amplifier?

Last Answer : Bilpolar Juntion transistor , this fuction is control the current

1 answer
86 views

Description : How can BJT be used as an amplifier?

0 answers
...