20EC205 - Analog Electronics (2023-2027 Batch)

ROLL NO

Course Instuctor

• Dr.K.R.Prabha,ASP/ECE
• Mrs.V.Anupriya, AP/ECE
• Mr.M.Selvaganesh, AP/ECE

Name of the Student

1. In class B power amplifier, the output current flows for,

• less than half input cycle
• more than half input cycle
• Half input cycle
• Entire half cycle

2. Which power amplifier has the highest collector efficiency?

• A
• B
• C
• D

3. The crossover distortion characteristics of,

• Class A output stage
• Common base output stage
• Class AB output stage
• Class B output stage

4. The use of amplifier in a circuit is to ______ for the input signal.

• Provide phase shift
• Provide strength
• Provide frequency enhancement
• make circuit compatible

5.The component of Class D component are given below. Arrange these in order of their use from input towards output. (A) Amplifier (B) Comparator (C) Sawtooth generator (D) Low pass filter

• a) C,D,B,A
• b) D,A,B,C
• c) C,B,A,D
• d) B,C,D,A

6. Power amplifier directly amplifies_______ of the signal

• Voltage
• Current
• Power
• All

7. For a perfect Power amplifier output power rating will be ________ if the output impedance is halved.

• Halved
• Squared
• Doubled
• Square rooted