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Class XII Physics Semiconductor Electronics Quiz 8

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Question 1

A realistic graph depicting the variation of the reciprocal of input resistance in an input characteristics measurement in a common emitter transistor configuration is:

Question 2

In a transistor amplifier, when the signal changes by 0.04 V, the base current changes by and collector current by 2 mA. If collector load and. Then find the voltage gain

Question 3

The value of the resistor, , needed in the dc voltage regulator circuit shown here, equals:

Question 4

Which of the following statements is incorrect regarding the working of a transistor?

Question 5

When a transistor is connected in common base mode, the current gain is found to be α = 0.98 and the reverse saturation current for the collector-base junction is found to be 0.6 𝜇𝐴. On connecting the same transistor in common-emitter mode as an amplifier the base current is found to be 20 𝜇𝐴, the magnitude of the collector current in this case is

Question 6

This circuit in figure represents which LOGIC Gate

Question 7

Mobilities of electrons and holes in a sample of intrinsic germanium a room temperature are 0.36m2V-1s-1 and 0.17m2V-1s-1 . The electron and hole densities are each equal to 2.5×1019m3. The electrical conductivity of germanium is

Question 8

A transistor has common-emitter current gain of the range 60 to 160 , the common-base current gain range would be
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Nov 3JEE & BITSAT

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Avinash KumarAvinash KumarMember since Feb 2017
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