What is a photodiode? Explain its working with a circuit diagram and draw its 1-V characteristics.

What is a unit? What are its characteristics?

Draw a circuit diagram of L.E.D. What are its advantages?

Draw the diagram of the circuit arangement used for studying the 'input' and the 'output' characteristics of an n-p-n transistor inits CE configuration. Briefly explain how these two types of characteristics are obtained and draw these characteristics. (b) 'Define' the terms (i) Input resistance, (ii) Output resistance , (iii) Current amplification factor, for a given transistor.

The figure below shows the V-I characteristic of a semiconductor diode. (i ) Identify the semiconductor diode used. (ii) Draw the circuit diagram to obtain the given characteristic of this device. (ii) Briefly explain how this diode can be used as a voltage regulator.

What is pyramid of energy? What are its characteristics?

Identify the tissue shown in the diagram and match with its characteristics and its location

Identify the tissue shown in the diagram and match with its characteristics and its location

(i) Figure shows the input waveform which is converted by a device .X. into an output wavefrom. Mane the device and explain its working using the proper circuit. (ii) Draw the forward bias and reverse blas circuit for the basic component of the device and draw the characterstics. Explain clearly which region of the curve is used in an amplifier.

Draw a circuit diagram of L.E.D. Mention it's advantages?

(i) Write the functions of three segments of a transistor. (ii) Draw the ciruit diagram or studying the input and output characteristics of n-p-n transisfor in common emitter configuration . Using the circuit explain how input characteristics are obtained .