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can transistors amplify voltage?

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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

Answer : ANSWER: Y -- COLLECTOR CURRENT

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

Description : can transistor amplify dc?

Answer : No

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Description : Draw symbol of NPN and PNP transistors. 

Answer : symbol of NPN and PNP transistors

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Answer : Power transistors with heat sink are fixed by Fastening

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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.

Description : Transistors can be used as _____. A. Amplifier B. Adder C. Relay D. MCB

Answer : Amplifiers and switches

Description : How can we protect circuit from reverse voltage polarity?

Answer : We can protect circuit from reverse voltage by connecting diode in series but connecting diode in series is less efficient. So we can also protect circuit from reverse voltages by connecting p channel ... gate and source of mosfet and input voltage is applied between drain and Gate of mosfet.

Description : The -------can conduct current in either direction and is turned-on when the breakover voltage is exceeded  A) SCR B) Diac  C) SCS D) Traic

Answer : The diac  can conduct current in either direction and is turned-on when the breakover voltage is exceeded.

Description : The term "laminar flow" is most often associated with the description of: w) conduction of sound by waves x) current flow in transistors y) effects of viscosity of liquids z) passage of light rays through a liquid

Answer : ANSWER: Y -- EFFECTS OF VISCOSITY OF LIQUIDS

Description : Name this chemical element. The principal use of this element has been in solid-state electronic devices, notably transistors. Its position in the periodic table is in group "4A". The element's atomic number is 32 and its chemical symbol is Ge.

Answer : ANSWER: GERMANIUM

Description : Draw the diagram for PAM generation using transistors. Explain its working.

Answer : Explanation:-1. Transistor Q1 is used in the active region so it has been provided with DC biasing to its base. 2. Modulating signal is applied to the base of transistor Q1 3. In the emitter of ... . 7. In the time interval between sampling pulses output is zero. Thus we get the output as PAM.

Description : ECL is the fastest of all logic families. High Speed in ECL is possible because transistors are used in difference amplifier configuration, in which they are never driven into ............... (1) Race condition (2) Saturation (3) Delay (4) High impedance

Answer : Answer: 2  Explanation: Emitter-coupled logic (ECL) is the fastest of all logic families and therefore is used in applications where very high speed is essential. High speeds have become ... configuration, in which they are never driven into saturation and thereby the storage time is eliminated.

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Answer : Vacuum tube

Description : What did the first electronic digital computer contain ? (1) Transistors (2) Valves (3) Core memory (4) Semiconductor memory

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Answer : Most of the transistors are NPN type and not PNP type because We can have high conduction is NPN transistors 

Description : Define: i) Input Offset Voltage ii) Input offset Current iii) Input Bias Current iv) Output offset voltage

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Description : An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W

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Answer : In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half of the secondary winding is 30 V. Then PIV is: 60 V

Description : The device used for voltage regulator is

Answer : The device used for voltage regulator is zener diode

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Answer : Pinch off voltage of a J FET is the drain to source voltage above which drain current Remains constant

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 : The time constant of an RC circuit is defined as the time taken by the voltage across the capacitor to become_____ of its final value   (a) 63.2% (b) 36.8% (c) 50% (d) 100%  

Answer : The time constant of an RC circuit is defined as the time taken by the voltage across the capacitor to become 63.2% of its final value 

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Answer : Threshold voltage for PMOS is generally Negative 

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Description : In a fullwave rectifier circuit with centre tap transformer, if voltage between one end of secondary winding and centre tap is 300V peak, then PIV (peak inverse voltage) is a. 300 V b. 150 V c. 600 V 5 d. 900 V

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Answer : A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t = Zero.

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Description : An eight bit digital data 10101100 is fed to an ADC. The reference voltage is +10V. The analog output voltage will be:  (1) 1.05V (2) 6.74V (3) 10.10V (4) 5.15V

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Answer : -20

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Description : Why voltage divider bias is also called self bias?

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