BARC Placement Paper Contributed by Mihir updated on Mar 2019

                 Preparation Material for BARC - Electronics Sample Questions

1. Distinction between FM and PM at high frequencies.

2. Which of these has the least propagation delay RTL/ECL/I2L/CMOS.

3. Switching speed of CMOS is affected/unaffected by changes in supply voltage.

4. Which of these provides a measure of heart rate P/QRS complex/T/none of these.

5. Given a ckt of a logarithmic amplifier you had to identify what ckt was it.

6. JFET can operate in depletion/enhancement/both/none of the above modes.

7. When a BJT operates in saturation the junctions are fwd biased/reverse biased/…

8. BIBO stability criterion implies that poles are within/outside/on the unit circle.

9. For faithful amplification of low amplitude signals the cut-off/active/saturation regions of a transistor is used.

10. Lissajous pattern of a signal rotates 36 times per minute. if the oscillator frequency is 560 kHz then the unknown freq is…

11. Percentage resolution of a 10 bit ADC.

12. To obtain 10 mV resolution on 5 V range how many bit DAC is to be used..

13. Why is LCD preferred to LED.

14. How will 0.6973 be displayed on 10 V range of a 4 ½ digit multimeter.

15. Which of the following cannot be used for an automatic feedback temp ctrl system thermocouple/thermometer/thermistor/IC sensor.

16. Y(n)=X(-n+3) is an example of a linear/non linear and shift variant/invariant system.

17. The falling body method is used to determine viscosity/humidity/….

18. Which of these methods of viscosity measurement gives greatest accuracy falling body method/rotating cylinder method/both/…

19. Some question on gas chromatography

20. A device having a rotor with 3 Y-connected coils and a stator is likely to be a synchro/RVDT/control transformer/…