Suprize test 1 AIC

In which one of the following circuits both output and input will be in digital format?

• a)     Analog

• b)     Digital

• c)     Both a and b

• d)     discrete

In which one of the following clippers will have a voltage source?

• a)     Positive

• b)     Unbaised

• c)     Baised

• d)     Negative

The Purpose of Level shifter in operational amplifier internal circuit is to ________________.

• a)      adjust DC voltage

• b)  increase impedance

• c)      provide high gain

• d)     decrease input resistance

The feedback factor is  ______ for RC phase shift oscillator.

• a)     1/10

• b)   1/20

• c)     1/29

• d)     1/3

Which of the following is an example for analog electronics?

• a)     Digital clocks

• b)     SMPS

• c)     FM Radios

• d)     Compass

Which is not the internal circuit of operational amplifier  _________.

• a) Differential amplifier

• b) Level Translator

• c) Output driver

• d) Clamper

An amplifier without feedback has a voltage gain of 50,input resistance of 1KΩ & output resistance of 2.5KΩ. The input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is  ______.

• a) 1/11 KΩ

• b) 1/5KΩ

• c) 11KΩ

• d) 5KΩ

The CMRR, given gm=16MΩ, Re=25KΩ.

• a) 58 db

• b) 63 db

• c) 40 db

• d) 89 db

The SiO2 layer in an IC acts as ______.

• a)Resistor

• b) An insulating layer

• c) Mechanical output

• d) Capicator

Find the value of capacitor,if the rate of change of voltage across the capacitor is 0.78V/μs and current =12μA

• a) 5μF

• b) 2μF

• c) 10μF

• d) 15μF