Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 12

MEDIUM

12th Odisha Board

IMPORTANT

Earn 100

A transistor amplifier has collector supply voltage $V_{C C} = 50 V$ and collector voltage $V_{C} = 10 V$ . If load resistance $R_{L}$ is $200 Ω$ , calculate collector current $I_{C}$ .

Important Questions on Transistors

HARD

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 3

In a transistor amplifier, the collector load resistance

R_{L}

is

2 KΩ

and input resistance

R_{i}

is

1 KΩ

. If the current gain is 50, calculate voltage gain of the amplifier.

HARD

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 7

The input resistance of a common emitter amplifier is

2 kΩ

and ac current gain is

20

. If the load resistor used is

5 kΩ

, calculate (ii) the transconductance of the transistor used.

HARD

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 9

A change of

0.2 mA

in the base current causes a change of

5 mA

in the collector current for a common emitter amplifier. (ii) If the input resistance is

2 kΩ

, and is voltage gain is

75

, calculate the load resistor used in the circuit.

HARD

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 4

What is a transistor? Why it is so called? Explain the working of an n-p-n or p-n-p transistor.

HARD

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 6

Draw the circuit diagram to study input and output characteristics of CB- NPN transistor. How do you determine

α

and

β

from its characteristics

?

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 1

The emitter-base junction is always _____ biased.

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 1

Correct the following sentences: The emitter-base junction is always reverse biased.

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 2

Correct the following sentences: The value of transistor constant $β$ is always less than $1$ .