MHT CET 2021 23th September Morning Shift | Semiconductor Devices and Logic Gates Question 51 | Physics

In common emitter amplifier, a change of 0.2 mA in the base current causes a change of 5 mA in the collector current. If input resistance is 2 k$$\Omega$$ and voltage gain is 75, the load resistance used in the circuit is

8 k$$\Omega$$

4 k$$\Omega$$

12 k$$\Omega$$

6 k$$\Omega$$

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

Which of the following gates will give an output '1' for the given inputs?

MHT CET 2021 22th September Evening Shift Physics - Semiconductor Devices and Logic Gates Question 25 English

II and III

I and IV

I and III

II and IV

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

For a common-emitter amplifier, the voltage gain is 40. Its input and output impedances are $$100 \Omega$$ and $$400 \Omega$$, respectively. The power gain of the CE amplifier will be

450

400

300

500

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

Choose the correct statement. In semiconductors valance band and conduction band

is separated by large energy gap.

is separated by small energy gap:

is almost empty.

overlap each other.

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