MCQ on Analog Electronics with Answers - 9

 

Multiple Choice Questions with Answers on Analog Electronics Circuits - 9

                  1          In a negative feedback amplifier, voltage sampling

a.             tends to decrease the output resistance

b.            tends to increase the output resistance

c.             produces same effect on output resistance as current sampling

d.            does not alter output resistance

Answer: a

 

          2          In a negative feedback amplifier, current sampling

a.              tends to decrease the output resistance

b.             tends to increase the output resistance

c.              produces same effect on output resistance as voltage sampling

d.             does not alter output resistance

Answer: b

 

          3          In a negative feedback amplifier, series mixing

a.             tends to decrease the input resistance

b.            tends to increase the input resistance

c.             produces same effect on input resistance as voltage mixing

d.            does not alter input resistance

Answer: b

 

          4          In a negative feedback amplifier, shunt mixing

a.             tends to decrease the input resistance

b.            tends to increase the input resistance

c.             produces same effect on input resistance as voltage mixing

d.            does not alter input resistance

Answer: a

 

          5          Emitter follower is a negative feedback amplifier using

a.      voltage series feedback

b.     voltage shunt feedback

c.      current series feedback

d.     current shunt feedback

Answer: a

 

          6          FET source follower is a negative feedback amplifier using

a.      voltage series feedback

b.     voltage shunt feedback

c.      current series feedback

d.     current shunt feedback

Answer: a

 

          7          CE amplifier with unbypassed resistor  in emitter to ground circuit forms a case of negative feedback amplifier with

a.      voltage series feedback

b.     voltage shunt feedback

c.      current series feedback

d.     current shunt feedback

Answer: c

 

          8          FET common source amplifier with unbypassed resistor  in source to ground circuit forms a case of negative feedback amplifier using

a.      voltage series feedback

b.     voltage shunt feedback

c.      current series feedback

d.     current shunt feedback

Answer: c

 

          9          CE amplifier with a resistor connected between collector and base forms a case of negative feedback amplifier using

a.      voltage series feedback

b.     voltage shunt feedback

c.      current series feedback

d.     current shunt feedback

Answer: b

 

       10       Feedback is said to be positive if

a.             the feedback signal gets subtracted from the input signal

b.            the feedback signal gets added to the input signal

c.             any increase in the output signal results in a feedback signal which on being mixed with the input signal causes further increase in the magnitude of the output signal

d.            none of these

Answer: c

 

 

Hope this post on "MCQ on Analog Electronics with Answers-9" will help Electronics Engineering and Electrical Engineering students in preparation of technical interviews, GATE, IES etc.