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‎0०००६ 00201102 യധികം‏ ہیں
‎SECOND SEMESTER B.TECH. DEGREE EXAMINATION, MAY/JUNE 2016‏
‎EC100 : BASICS OF ELECTRONICS ENGINEERING‏

‎. Max. Marks : 100 Duration : 3 Hours

‎PART—A
‎Answer all Questions. Each carrying two marks each.
1. Write any four applications of electronics in the field of medical science.

‎2. Acarbon resistor has the colour bands; green, blue, red and gold. What is its
resistance value ? Also, write the colour band sequence for 390 + 20%.

‎3. Whatis the difference between active and passive components ۶ Name at least
two in each category.

‎4. AGermanium diode carries a current of 1mA at room temperature when a forward
bias of 0.15V is applied. Estimate the reverse saturation current at room
temperature.

‎5. Derive the relationship between a and 0 of a transistor.

‎6. Draw the symbol and write the general specifications of the following :
a) Zener diode
b) NPN transistor.

‎7. Whatis the need for feedback in oscillators ? Explain the criteria for sustained
oscillation.

‎8. Define ripple factor and write the values for half wave, center tapped and bridge
rectifiers.

‎9. Draw the block diagram of a public address system.
10. Define the terms CMRR and slew rate. Give its value for an ideal op-amp.

‎P.T.O.