MEDIUM
12th Odisha Board
IMPORTANT
Earn 100

In a common emitter mode of a transistor, the d.c. current gain is 20, the emitter current is 7 mA. Calculate (ii) collector current.

Important Questions on Transistors

MEDIUM
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. (i) Find the a.c current gain of the transistor.
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 1
Obtain the relation between α and β of a transistor. With suitable circuit diagram describe the use of a p-n-p transistor as an amplifier.
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 2
With necessary circuit diagram describe use of an n-p-n transistor as an amplifier?
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 3
Explain with neat circuit diagram the working of an n-p-n transistor with brief description of its construction.
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 5
Define transistor parameters α, β and γ. Find a relation between them. How do you determine α and β from output characteristics of CE 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 ?