# can transistor amplify dc?

can transistor amplify dc?

No

## Related questions

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

Description : can transistors amplify voltage?

Description : How the mosfet can be used to amplify the time dependent voltage?

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

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

Description : In a bipolar transistor when in saturation, the dc current gain is (a) less than (3 (b) greater than (3 (c) equal to 13 (d) zero

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

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 : 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

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

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

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.

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

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

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

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

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

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

Answer : A transistor has 3 number of terminals.

Description : For a transistor, Ceb=20pF, Ccb=5pF, re=1kOhm. Its figure of merit (in MHz) is about  A) 65 B) 650 C) 130 D) 13

Description : Maximum junction temperature and maximum ambient temperature of a power transistor (in degree Centigrade) are 150 and 52. The set level power dissipation is 32 watts, transistor thermal factor is 0.7 and of mica washer is 0.5.Thermal ... sink (in degree C/W) is  A) 1.8 B) 3.2 C) 6.4 D) 9.8

Description : For an NMOS transistor, Vt= 2 V, Vgs= 3 V, Vdd= 10 V,µnCox=20 µA/V2 , L=10 meter, W= 400 µmeter. The drain current (in mA) is  A) 2 B) 1.2 C) 0.4 D) 0.2

Description : In IC fabrication, the common form of PNP transistor is  A) Vertical PNP B) Lateral PNP C) Triple diffusion PNP D) Substrate PNP

Answer : A Transistor has Two PN junctions

Answer :  The most commonly used transistor circuit arrangement Common emitter

Answer : The function of Transistor is to do Amplification

Answer : A FET is a Bi-polar transistor

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

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

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

Description : What is thermal runaway of a transistor?

Description : What is meant by stabilization in transistor?

Description : What is the main use of a transistor?

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

Description : What is self biasing of transistor?

Description : Why biasing is required for a transistor?

Description : Explain with neat diagram how transistor can be used as a switch.

Answer : In Bipolar Transistor as a Switch the biasing of the transistor, either NPN or PNP is arranged to operate the transistor at both sides of the I-V characteristics curves. The areas ... possible and maximum current flowing through the transistor. Therefore the transistor is switched Fully-ON .

Description : Which one among the following components can not be developed within an “integrated circuit”? (1) Diode (2) Triode (3) Transformer (4) Transistor

Description : A NOT gate can be implemented by: (1) a single diode (2) two diodes (3) a single resistor (4) a single transistor

Description : Describe thermal runaway of transistor and explain how it can be avoided.

Answer : Concept of thermal runaway:  1.We know that  IC = β IB + (1+ β) ICO  Where ICO is the leakage current and ICO is strongly dependent on temperature. 2. Leakage current approximately doubles for ...   Thermal runaway can be avoided by : 1) Using stabilization circuitry 2) Heat sink

Description : A single transistor can be used to build which of the following digital logic gates : - a) AND gates b) OR gates c) NOT gates d) NAND gates

Answer : A single transistor can be used to build which of the following digital logic gates : - NOT gates

Description : The ripple voltage in the output of a single phase half wave rectifier with 10 V rectified dc voltage with resistive load and without filter will be • 12.1 volt • 1.21 volt • 0.482 volt • 4.82 volt

Answer : The ripple voltage in the output of a single phase half wave rectifier with 10 V rectified dc voltage with resistive load and without filter will be 12.1 volt

Description : What type of instrument is used to measure dc voltage of the order 5 volts? (A) moving iron type (B) electro-static type (C) moving coil type (D) all of these

Answer : Permanent Magnet Moving Coil (PMMC) voltmeter is used to  measure the DC voltage. We can also use moving iron meter, but it has more error compared to moving coil.

Answer : DC energy required for satellites is generally derived from Solar cells and nickel-cadmium cells.

Answer :  The horizontal intercept of dc load line is the same as ideal cut off point.

Description : What is the percentage of stray losses in DC machine?

Answer : Percentage of stray losses in DC machine is about 1 % .

Description : Which capacitors are suitable for DC filter circuits?

Answer : Electrolytic capacitors are suitable for DC filter circuits.

Description : What is Brushless DC Motor (BLDC) ?

Answer : Brushless DC Motor (BLDC)  The motor is made up of rotor and stator . In BLDC motor the rotor is a ferromagnetic material (permanent magnet). The rotor may be  ... winding gives low torque at low speed and start winding gives high torque at low speed.

Description : Advantages and Disadvantages of Permanent Magnet Brushless DC (PMBLDC) Motor

Description : The equation, X = A cos(wt + f) (read: X equals A times the cosine of omega t + phi (fee)), can represent an expression for: w) accelerating due to gravity x) uniform straight line motion y) dc current z) a simple harmonic oscillator

Description : how can I make  a dc variable power supply

Description : The dc motor, which can provide zero speed regulation at full load without any controller is  (A) series (B) shunt (C) cumulative compound (D) differential compound

Answer : The dc motor, which can provide zero speed regulation at full load without any controller is shunt

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