The Darlington pair consists of the following two stages
A) CE and CC
B) Both
C) Both CC
D) CE and CB

1 Answer

Answer :

C) Both CC

Related questions

Description : Which of the following combinations has no phase inversion of the signal? A) Two CE stages B) CE and CC stages C) Three CE stages D) CE stage and emitter follower.

Last Answer : A) Two CE stages

Description : As compared to a CB amplifier, a CE amplifier has A) Lower current amplification B) Higher current amplification C) Higher input resistance. D) Both (B) & (C)

Last Answer : D) Both (B) & (C)

Description : In an amplifier the collector voltage equals the full V+ of 28 V instead of the normal 12 V which of the following can be the trouble? A) RL is open B) Cc is open C) RE is open D) CE is shorted.

Last Answer : B) Cc is open

Description : In a resistance loaded amplifier, the gain decreases a high frequencies because A) Of decreasing reactance of the stray CT B) Increasing reactance of the stray CT C) Increasing reactance of CC D) Decreasing reactance of CC.

Last Answer : D) Decreasing reactance of CC.

Description : In a resistance loaded, RC coupled amplifier the dc component is blocked by A) Load resistance RL B) Coupling capacitor, CC C) RB D) The transistor.

Last Answer : B) Coupling capacitor, CC

Description : Which of the following methods cannot be used to increase the bandwidth for cascaded RF amplifier stages? A) Wave traps in each stage B) Stagger tuning C) A shunt damping resistor across each tuned circuit D) Doubled tuned transformers with tighter coupling

Last Answer : A) Wave traps in each stage

Description : What is CB, CE and CC configuration ?

Last Answer : Buffer : A device or a circuit used to isolate two pt'ne circuits or stages. The emitter follows is a example of buffer. Alpha = IC / IE Beta = IC / IB

Description : (i) Discuss ideal and practical voltage source (ii) Compare CB, CC and CE configuration

Last Answer : (i) Discuss ideal and practical voltage source Ideal voltage source The ideal voltage source has a constant voltage across its terminal, irrespective of the current drawn from the source. Ideal Voltage Source have zero ... to reduce. (ii) Compare CB, CC and CE configuration

Description : Compare between CB , CE & CC transistor configuration.

Last Answer : Parameter CB CE CC I/P impedance Low Or 50Ω Medium Or 600Ωto 4kΩ High Or 1 MΩ Current Gain Less than or equal to 1 High Highest Voltage Gain Medium Medium Less ... k Ω to 50 k Ω Low Or 50 Ω Phase shift between input and output 0° 360° 0° 

Description : Which amplifier will be preferred for highest gain? A) Darlington's pair B) Cascade amplifier C) Cascode amplifier D) Depends on the circuitry

Last Answer : C) Cascode amplifier

Description : A push pull amplifier balances out A) Odd harmonics B) Even harmonics C) Both odd as well as even harmonics D) Neither odd nor even harmonics.

Last Answer : A) Odd harmonics

Description : The change in base current will be A) 0.66 micro ampere B) 6.6 micro amperes C) 66 micro amperes D) 660 micro amperes.

Last Answer : A) 0.66 micro ampere

Description : In an amplifier if conductor during the cycle is from 0 to 90° and again from 180° to 270°, the amplifier will be termed as A) Class A B) Class B C) Class C D) Class AB.

Last Answer : B) Class B

Description : Which distortion is least objectionable in case of audio amplifers? A) Phase distortion B) Frequency distortion C) Harmonic distortion D) Inter modulation distortion.

Last Answer : A) Phase distortion

Description : Which of the following contributes to harmonics distortion in amplifiers? A) Positive feedback B) Presence of noise C) Defective active device D) Non linearity in active device.

Last Answer : D) Non linearity in active device.

Description : An ideal voltage amplifier should have A) Ri = 0, R0 = 0 B) Ri = 0, R0 =∞ C) Ri = ∞, R0 = 0 D) Ri = ∞, R0 = ∞.

Last Answer : C) Ri = ∞, R0 = 0

Description : A IGFET is a A) Linear device B) Square law device C) Half power device D) 3/2 power law device.

Last Answer : B) Square law device

Description : An FET has a gate source bias of 2 V. The ac input signal is ± 1.2 V. The class of operation is A) A B) B C) C D) AB

Last Answer : D) AB

Description : If the operating point of an NPN transistor amplifier is selected in saturation region, it is likely to result in A) Thermal runaway of transistor B) Clipping of output in the positive half of the ... for high dc collector supply D) Clipping of output in the negative half of the input signal

Last Answer : B) Clipping of output in the positive half of the input signal

Description : Which of the following circuit would be preferred for a 455 kHz IF amplifier? A) A resistance loaded B) Double tuned transformer C) Video amplifier D) Class C

Last Answer : B) Double tuned transformer

Description : Common base configuration is little used because A) It has low input impedance B) It has high input impedance C) It does not heat up D) It has very high gain.

Last Answer : A) It has low input impedance

Description : Foldback current limiting has the advantage of A) Better pass transistor protection for long term overloads B) A defined turn on point C) Circuit simplicity D) All of the above.

Last Answer : A) Better pass transistor protection for long term overloads

Description : A crow bar is a power supply circuit that provides A) Conventional current limiting B) Foldback current. limiting C) Temperature control D) Voltage limiting.

Last Answer : D) Voltage limiting.

Description : Current limited power supplies can prevent damage to A) Rectifier diodes and power transformers. B) Pass transistors C) Other circuits in the system D) All of the above.

Last Answer : D) All of the above.

Description : In general, MOV devices are used to protect electronic equipment from dangerous operating conditions such as A) High temperatures B) Line transients C) Over current D) All of the above.

Last Answer : D) All of the above.

Description : Load regulation is a measure of a power supplies ability keep a constant output under conditions of changing A) Line voltage B) Current demand C) Temperature D) Oscillator frequency.

Last Answer : A) Line voltage

Description : What is the phase relationship of the signal at the collector of Q2 to the signal at the collector of Q, A) 0° B) 90° C) 180° D) 360°.

Last Answer : C) 180°

Description : A series mode crystal is marked 10.000 MHz., It is used in a circuit that operates the crystal in its parallel mode. The circuit can be expected to A) Run below 10 MHz B) Run at 10 MHz C) Run above 10 MHz D) Not oscillate.

Last Answer : C) Run above 10 MHz

Description : Six (6) MHz crystal oscillator has a stability of 1 part in 106. The largest frequency error expected of this crystals A) 0.06 Hz B) 0.6 Hz C) 6 Hz D) 60 Hz.

Last Answer : C) 6 Hz

Description : An oscillator that uses crystal control should be A) Frequency stable B) useful only at low frequencies C) AVFO D) none of the above.

Last Answer : A) Frequency stable

Description : The major function of transistor. Q2 is A) It provides voltage gain B) It provides the feedback signal C) It isolates the oscillator from loading effects D) It provides a phase shift.

Last Answer : ) It provides a phase shift.

Description : What conditions are required for an amplifier to oscillate A) There must be feedback B) The feedback must be in phase C) The gain must be greater than the loss D) All the above are regd.

Last Answer : B) The feedback must be in phase

Description : Which of the following is not true: A) An oscillator is a circuit that converts DC to AC B) An oscillator is an amplifier that supplies its own input signal C) All oscillators generate sine waves D) In phase feedback is called positive Feedback

Last Answer : C) All oscillators generate sine waves

Description : The ideal characteristic of a voltage stablizer is A) constant output voltage with low internal resistance B) constant output current with low internal resistance C) constant output voltage with high internal resistance D) constant internal resistance with variable output voltage.

Last Answer : A) constant output voltage with low internal resistance

Description : The Bandwidth of an RC-coupled amplifier is limited by: A) coupling capacitors at the low frequency end and bypass capacitors at the high frequency end B) coupling capacitors at the high frequency ... at the low frequency end and bypass as well as coupling capacitors at the high frequency end.

Last Answer : C) bypass and coupling capacitors at the low frequency end and shunt capacitors at the high frequency end and

Description : Darlington pair  1.is a three terminal device with very high current gain 2.has a very high input impedance 3.has a very low output 4.all the above are true 

Last Answer : Darlington pair  1.is a three terminal device with very high current gain 2.has a very high input impedance 3.has a very low output 4.all the above are true 

Last Answer : The darling ton pair consists of the following two stages Both CC.

Description : Assertion:- A single human cell has approximately two meter long thread of DNA distributed in each chromosome. Reason:- Durring different stages of ce

Last Answer : Assertion:- A single human cell has approximately two meter long thread of DNA distributed in each ... D. If both Assertion & Reason are false.

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 most common device used as a light detector in fiber optic communications system. A. LED B. Darlington phototransistor C. APDs D. PIN diode

Last Answer : C. APDs

Description : A Darlington transistor connection provides a transistor having a very large  a. Current gain b. Voltage gain c. Impedance gain d. Impedance matching gain

Last Answer : A Darlington transistor connection provides a transistor having a very large Current gain

Description : How many parts of floating point representation of a number consists. a. 4 b 2 Cc. 3 d 5

Last Answer : b 2

Description : ________cable consists of two insulated copper wires twistedtogether. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above

Last Answer : Twisted-pair

Description : __________ consists of a central conductor and a shield. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above

Last Answer : Coaxial

Description : ______ cable consists of an inner copper core and asecond conductingouter sheath. A) Twisted-pair B) Coaxial C) Fiber-optic D) Shielded twisted-pair

Last Answer : Coaxial

Description : Select the correct statement from the ones given below with respect to Periplaneta americana. (a) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal ... midgut and hindgut. (d) Grinding of food is carried out only by the mouth parts.

Last Answer : (b) Males bear a pair of short thread like anal styles.

Description : Consists of 2 conductors twisted round each other. a. Twisted pair cable b. Fiber optic cable c. Coaxial cable d. Microwave

Last Answer : a. Twisted pair cable

Description : Select the correct statement from the ones given below with respect to Periplaneta americana (1) Grinding of food is carried out only by the mouth parts (2) Nervous system located dorsally, consists ... (4) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

Last Answer : (3) Males bear a pair of short thread like anal styles

Description : Complement the subtrahend by converting all annddall a. 1’s to 0’s b. 0’s to 1’s ce. Both d. None of these

Last Answer : ce. Both

Description : The number of bit required to express and ___ are determined by the accuracy desired from the computing system . a. Exponent b. Mantissa ce. Both d. None f these

Last Answer : ce. Both