UNIT X: Semiconductor Electronics and Communication Systems - Online Test

Q1. If the input to the NOT gate is A = 1011, its output is
Answer : Option A
Explaination / Solution:

For NOT Gate output Y = Ᾱ

Here A = 1011 . Y =0100


Q2. Which one of the following represents forward bias diode?
Answer : Option A
Explaination / Solution:
No Explaination.


Q3. The given electrical network is equivalent to

Answer : Option C
Explaination / Solution:



Q4. The output of the following circuit is 1 when the input ABC is

Answer : Option A
Explaination / Solution:

Y = (A+B)C

For Y = 1; C must be 1

The input ABC is 101

Y= (1 + 0).l = 1


Q5. The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called ------------------
Answer : Option B
Explaination / Solution:
No Explaination.


Q6. The frequency range of 3 MHz to 30 MHz is used for
Answer : Option C
Explaination / Solution:
No Explaination.


Q7. The specific characteristic of a common emitter amplifier is
Answer : Option C
Explaination / Solution:
No Explaination.


Q8. The electrical series circuit in digital form is
Answer : Option A
Explaination / Solution:
No Explaination.


Q9. The output transducer of the communication system converts the radio signal into _______
Answer : Option A
Explaination / Solution:
No Explaination.


Q10. The signal is affected by noise in a communication system
Answer : Option C
Explaination / Solution:
No Explaination.