10123
Reg. No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST SEMESTER B.TECH DEGREE EXAMINATION, JUNE 2016
Course Code: BE101-04
Course Name: INTRODUCTION TO ELECTRONICS ENGINEERING
Max. Marks: 100 Duration: 3 Hours

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Answer ALL questions. Each question carries 2 marks

Find out the max current rating for a 10k ohm, 0.5 W resistor.

In a particular circuit, a resistor was used with colour band Gray, Red, Black, Gold in respective

order and a ceramic capacitor with marking 224. Identify the value of resistance and capacitance.

What is the main difference between trimmer and Gang capacitor?

Why do LEDs emit light while ordinary diodes do not?

Assume that the diode is initially at room temperature (27° C). Show the effect of temperature on

the V-I characteristics, if the same diode is placed at a temperature of (75°C)

Analyze the importance of forbidden gap in determining the nature of conduction of a material.

In BC 107 transistor, B and C stands for what?

What is thermal runaway and how does this affect a transistor?

CC configuration is used mainly for impedance matching. Give reason.

Define the three FET parameters gm, സി காம்‌ ம. Prove that

# =gm x rd

Why is JFET called as a Voltage Variable Resistor and which region of V-I curve is used for this

purpose?

When does a UJT behaves as a diode?

Sketch the load line for the diode network shown in the = ~ नै
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+ ۷
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figure. Also find the voltage across the resistor

An input 0810 sin(1 0071)

volt is applied to a कात
diode circuit. The output obtained from the circuit is 1

10+10sin(100zr) volt . Assume the diode is ideal. Draw the appropriate circuit.
Capacitor filter is not suitable for heavy loads. Give reason.