Chapter2- High power amplifier MCQ questions with answer

 -------------------- coupling is used in power amplifiers

a)      Transformer

b)      Resistor-capacitor

c)       Direct coupling

d)      All of above

 

There is high signal distortion in power amplifier.

a)      True

b)      False

 

Driver stage of power amplifier consists of --------------

a)      Class-A power amplifier

b)      Class-B power amplifier

c)       Class-C power amplifier

d)      Class-AB power amplifier

 

The location of Q-point is---------------------- in case of class-AB power amplifier

a)      On the centre of load line

b)      On x axis

c)       Just below x axis

d)      Just above x axis

 

--------------------power amplifier has highest efficiency among all types of power amplifiers.

a)      Class-A power amplifier

b)      Class-B power amplifier

c)       Class-C power amplifier

d)      Class-AB power amplifier

 

--------------------power amplifier has less or no cross over distortion among all types of power amplifiers.

a)      Class-A power amplifier

b)      Class-B power amplifier

c)       Class-C power amplifier

d)      Class-AB power amplifier

 

Class-AB power amplifiers are used in----------------------application.

a)      Outdoor musical system

b)      Audio power amplifiers

c)       RF amplifier

d)      All of above

 

Cross over distortion can be removed or avoided if the conduction of the transistor is more than---------------, due to which both the transistors will not be turned OFF at the same time.

a)      one half cycles

b)      one full cycle

c)       less than half cycle

d)      none of above

 

_________is the range over which the output of circuit is satisfactory

a)       gain

b)       efficiency

c)        bandwidth

d)       none of above

 

Value of collector resistor in power amplifier is generally ___________Ω

a)      4k Ω to 10K Ω

b)      4 Ω to 10 Ω

c)       5 Ω to 20 Ω

d)      5kv to 20K Ω