# In BJT, the common emitter gain β is

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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

In BJT, the common emitter gain β is desired to have large value

by

In BJT, the common emitter gain β is desired to have large value.

β is the Current gain factor also called transport factor.

## Related questions

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

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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 is Reverse Biased (C) Emitter Base Junction is Forward Biased and Collector Base Junction is Reverse Biased (D) Emitter Base Junction is Reverse Biased and Collector Base Junction is Forward Biased

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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

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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 reverse values (3) Replace all calculated currents by reverse values (4) Replace all calculated voltages and currents by reverse values

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 the BJT  (A) both the base-emitter and base-collector junctions are reverse biased (B) the base-emitter junction is reverse ... (C) the base-emitter junction is forward biased, and the base-collector junction is reverse biased (D) both the base-emitter and base-collector junctions are forward biased

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The current gain of emitter follower is: A) less than one B) more than one C) zero D) unpredictable

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A differential amplifier has a differential gain of 28000 and CMRR is 60 dB. What will be the value of common mode gain? A) Ac = 0.125 B) Ac = 0.33 C) Ac = 3 D) Ac = 28

A differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by

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.

How can BJT be used as an amplifier?

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Define α & β and derive the relation between (α) &) (β) of transistor.

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What is the value of Beta in power BJT?

In the emitter characteristic of UJT, the negative resistance portion.  1.lies in the cut-off region 2.continues up to peak point 3.lasts until the valley point is reached 4.does not exist

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A single-phase half-controlled rectifier is driving a separately excited dc motor. The dc motor has a back emf constant of 0.5 V/rpm. The armature current is 5 A without any ripple. The armature resistance is 2 Ohm. The converter is working from a 230 V, single-phase ac source with a firing angle of 30o . Under this operating condition, the speed of the motor will be  (A) 339 rpm (B) 359 rpm (C) 366 rpm (D) 386 rpm

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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