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The current gain alpha of a transistor i...

The current gain `alpha` of a transistor in common base mode is 0.995 . Its gain .. in the common emitter mode is

A

197

B

201

C

198

D

199

Text Solution

Verified by Experts

The correct Answer is:
D

Current gain in common emitter mode
` = alpha/(1-alpha) = 0.995/(1-0.995) = (0.995)/(0.005) = 199`
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DISHA PUBLICATION-SEMICONDUCTOR ELECTRONICS : METERIALS, DEVICES AND SIMPLE CIRCUITS-EXERCISE -1: CONCEPT BUILDER (TOPICWISE)
  1. A transistor is connected in common emitter configuration. The collect...

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  2. A pnp transistor is used in common-emitter mode in an amplifier circui...

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  3. In a npn transistor 10^(10) electrons enter the emitter in 10^(–6) ...

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  4. The current gain alpha of a transistor in common base mode is 0.995 . ...

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  5. A working transitor with its three legs marked P, Q and R is tested us...

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  6. A transistor has beta = 40. A change in base current of 100muA, produc...

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  7. A transistor has a base current of 1 mA and emitter current 90 mA. The...

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  8. In a common emitter transistor amplifier, beta=60, R(0)=5000Omega and ...

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  9. The current gain in transistor in common base mode is 0.99. To change ...

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  10. In a transistor, the change in base current from 100 muA to125 muA cau...

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  11. The output of a NAND gate is 0

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  12. What is the value of A.C + A.B.C where A, B and C are inputs?

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  13. The output of an OR gate is connected to both the inputs of a NAND gat...

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  14. When the two inoputs of a NAND gate are shorted, the resulting gats is

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  15. Digital circuit can be made by repetitive use of

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  16. NAND and NOR gates are called universal gates because they

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  17. To get an output 1 from the circuit shown in the figure, the input mus...

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  18. The correct option for getting X = 1 from the given circuit is:

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  19. The following circut represents

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  20. The diagram of a logic circuit is given below. The output F of the cir...

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