HARD
12th Odisha Board
IMPORTANT
Earn 100

A p-n-p transistor in common base configuration offers an input resistance of 50 Ω. If the current gain of the amplifier is 0.96, load resistance in the circuit is 5 KΩ, find (b) power gain of the transistor.

Important Questions on Transistors

MEDIUM
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 (i) the 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 8
In a common emitter mode of a transistor, the d.c. current gain is 20, the emitter current is 7 mA. Calculate (i) base current.
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 20 - Transistors>MODEL QUESTIONS>Q 8
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.
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?