1 Answer

Answer :

When a transistor is connected in common emitter mode, it with have medium input resistance and high output resistance.

Related questions

Description : In the common–emitter transistor circuit, if the current gain is 100 and the collector current is 10 mA, the base current is: (1) 10 µA (2) 100 µA (3) 1 A (4) 10 A 

Last Answer : In the common–emitter transistor circuit, if the current gain is 100 and the collector current is 10 mA, the base current is: 100 µA

Description : If a transistor were operated with emitter and collector interchanged, then  1 .emitter current will increase  2. Collector current will increase  3. Base current will decrease  4. No current flow will take place 

Last Answer : If a transistor were operated with emitter and collector interchanged, then Collector current will increase 

Description : Which junction of the transistor in the common-emitter detector detects the modulation envelope?

Last Answer : Emitter-base junction

Description : The common-emitter transistor circuit can amplify a small current signal because a small change in the signal current produces one of the following. Does the change in signal produce a large change in the: w) emitter-base voltage x) base current y) collector current z) collector voltage

Last Answer : ANSWER: Y -- COLLECTOR CURRENT

Description : As shown in the illustration, which of the elements listed does the line 'B' represent in the basic schematic symbol of a PNP transistor? EL-0068 A. Base B. Emitter C. Cathode D. Collector

Last Answer : Answer: D

Description : Which of the following actions can be carried out in order to prevent thermal runaway in a transistor? A. Increase the current through the collector-base junction. B. Install a heat sink. ... point to increase collector current. D. Increase the potential difference between the emitter and the base.

Last Answer : Answer: B

Description : Which of the listed components does line 'C' represent for the transistor illustrated? EL-0068 A. Grid B. Plate C. Emitter D. Collector

Last Answer : Answer: C

Description : In a transistor, the conventional current flows from base to emitter. The transistor is (a) NPN (b) PNP (c) FET (d) None of these

Last Answer : (a) NPN

Description : The emitter of a transistor is doped the heaviest because it: (a) Acts as a supplier of charge carriers (b) Dissipates maximum power c) has a large resistance (d) has a small resistance

Last Answer : (a) Acts as a supplier of charge carriers

Description : A part of transistor which is heavily doped to produce large number of majority carriers is (a) Emitter (b) Base (c) Collector (d) any of above

Last Answer : (a) Emitter

Description : In the transistor schematic symbol, the arrow ________ (a) located on emitter (b) located on base (c) located on collector (d) points from north to south

Last Answer : a) located on emitter

Description : The operation of a transistor requires ______ (a) Emitter is heated (b) base is heated (c) collector be heated (d) none of above

Last Answer : (d) none of above

Description : In p-n-p transistor, collector current is (a) Equal to emitter current (b) slightly less than emitter current (c) greater than emitter current (d) any of above

Last Answer : (c) greater than emitter current

Description : In n-p-n transistor, p works as ________ (a) Collector (b) emitter (c) base (d) any of above

Last Answer : c) base

Description : The central region of transistor is called (a) Base (b) emitter (c) collector (d) neutral

Last Answer : (b) emitter

Description : What are the three elements of a bipolar transistor? Are they the: w) grid, plate, cathode x) suppressor, deflector, target y) energizer, controller, terminus z) emitter, base, collector

Last Answer : ANSWER: Z -- EMITTER, BASE, COLLECTOR

Description : When an NPN transistor is properly biased then most of the electrons from the emitter   (A) recombine with holes in the base (B) recombine in the emitter itself (C) pass through the base to the collector (D) are stopped by the junction barrier

Last Answer : a

Description : In the illustrated circuit, the amplifier is connected in what basic configuration? EL-0022 A. common base B. reverse bias, negative feedback C. common emitter D. common collector

Last Answer : Answer: C

Description : In the illustrated circuit, the amplifier is connected in what basic configuration? EL-0045 A. common emitter B. common collector C. darlington paired, capacitor coupled D. common base

Last Answer : Answer: D

Description : The different angles of entry of light into an optical fiber when the diameter of the core is many times the wavelength of the light transmitter is known as ________. A. refraction B. sensor C. mode D. emitter

Last Answer : C. mode

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.

Description : An emitter follower circuit is widely used in electronic instruments because  (A) Its voltage gain is less than unity  (B) its output impedance is high and input impedance is low  (C) its output impedance is low and input impedance is high  (D) none of the above

Last Answer : Don't no happy be

Last Answer : Beta in grounded emitter circuit is very high due to base current in small compared to collector current.

Description : What is Enhancement mode transistor?

Last Answer : The device that is normally cut-off with zero gate bias.

Description : Draw: (i) Input characteristics of transistor in CE mode. (ii) Output characteristics of transistor in CE mode and show different regions on it.

Last Answer : (i) Input characteristics of transistor in CE mode.   (ii) Output characteristics of transistor in CE mode and show different regions on it.  

Description : The set of transistor characteristics which enable α to be determined directly from the slope is (a) CB transfer characteristics (b) CE transfer characteristics (c) CB input characteristics (d) CE output characteristics

Last Answer : The common base transfer characteristics

Description : In a transistor Colpitts oscillator, C1 = 0.001 µF, C2 = 0.01 µF and L = 5 µH. The frequency of oscillation in MHz will be (a) 2.37 MHz (b) 10.00 MHz (c) 11.54 MHz (d) 9.09 MHz 

Last Answer : c

Description : A transistor has a typical value of β = 200 , If the collector current is 15 mA, then base current will be

Last Answer : A transistor has a typical value of β = 200 , If the collector current is 15 mA, then base current will be 0.075 mA

Description : Beta cut-off frequency of a transistor is the frequency at which the Beta is • 0.707 of low frequency value • Zero • Equal to low frequency value • None of the above.

Last Answer : Beta cut-off frequency of a transistor is the frequency at which the Beta is 0.707 of low frequency value

Description : In a transistor  1. Emitter is heavily doped while the collector is moderately doped 2. Collector base junction is forward biased 3. Emitter is made wider than collector 4. The input resistance is much higher than output resistance 

Last Answer : In a transistor Emitter is heavily doped while the collector is moderately doped

Description : In an npn transistor, _____ are the minority carriers.   (a) Free electrons (b) Acceptor ions (c) Donor ions (d) Holes

Last Answer : In an npn transistor, Holes are the minority carriers.

Description : A transistor has ________ number of terminals. (A) 2 (B) 3 (C) 1 (D) 4 

Last Answer : A transistor has 3 number of terminals. 

Description : ICB0 in a transistor can be reduced by reducing:  (1) IB (2) VCC (3) IE (4) Temperature

Last Answer : ICB0 in a transistor can be reduced by reducing: Temperature.

Last Answer : A Transistor has Two PN junctions

Last Answer :  The most commonly used transistor circuit arrangement Common emitter

Last Answer : The function of Transistor is to do Amplification

Last Answer : A FET is a Bi-polar transistor

Last Answer : The encapsulation of transistor is necessary for mechanical ruggedness.

Last Answer : In a transistor leakage current mainly depends on temperature.

Description : What is the main use of a transistor?

Last Answer : Main use of a transistor as amplifier and as switch.

Description : can transistor amplify dc?

Last Answer : No

Description : A common-emitter circuit has an input voltage of 0.1 volt, an output voltage of 2.0 volts, an input current of 0.5 milliamps, and an output current of 10 milliamps. What is the power gain? A. 20 B. 40 C. 400 D. 4000

Last Answer : Answer: C

Description : The diagram shown in the illustartion represents a/an _____________. EL-0022 A. magnectic amplifier B. common base amplifier C. common collector amplifier D. common emitter amplifier

Last Answer : Answer: D

Description : What is the input current in the common-emitter circuit?

Last Answer : Base current (IB).

Description : How is the output signal developed in the common-emitter detector?

Last Answer : By the collector current flow through R4.

Description : Draw output characteristics of common emitter [CE] configuration and explain active, saturation and cut-off regions in detail. 

Last Answer : Characteristics of common emitter [CE] configuration Explanation :  (1) Active Region: In this region collector junction is reverse biased and emitter junction is forward biased. It is ... the transistor collector current is approximately given by VCC / RC and independent of base current. 

Description : Why common emitter configuration is commonly used?

Last Answer : Common emitter configuration is commonly used for amplifications because 1. The common emitter configuration (CE) provides maximum voltage and current gain and hence provides maximum power gain. The ... automatic impedance matching maximum power transfer will take place from one stage to other.

Description : A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed.  a. The circuit will become unstable b. The voltage gain will decrease  c. The voltage gain will increase d. The circuit will become stable

Last Answer : B

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 

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.