Electronics and Communication Engineering - Analog Electronics

11.
The purpose of using negative feedback in a op-amps is to
stabilize overall gain
increase output
stabilize overall gain and increase output
increase output and decrease input
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
A transistor amplifier with 85% efficiency is expected to be
class A
class B
class C
class AB
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
In the case of the circuit shown in the figure Vio = 10 mV dc maximum, the maximum possible output offset voltage Voo caused by the input offset voltage Vio with respect to ground is
60 mV dc
110 mV dc
130 mV dc
150 mV dc
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
The advantage of transistor over vacuum tube is
no heat is required
small size and light in weight
very low power consumption
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
Which of the following is necessary transistor action?
The base region must be very wide
The base region must be very narrow
The base region must be made of some insulating material
The collector region must be heavily doped
Answer: Option
Explanation:
No answer description is available. Let's discuss.