12th Physics Monthly Test - 3 ( Semiconductor Electronics)

St. Britto Hr. Sec. School - Madurai

12th Physics Monthly Test - 3 ( Semiconductor Electronics)-Aug 2020

Time : 2.30 Hours

Part - A

Generic 2 - Answer All Question

What is called logical variables?

Define depletion region.

Explain the need for a feedback circuit in a transistor oscillator.

Define photovoltaic effect.

Distinguish between intrinsic and extrinsic semiconductors.

Define Rectification.

What is conduction band?

Define Zener effect.

Define Reverse bias.

What is the phase relationship between the AC input and output voltages in a common emitter amplifier? What is the reason for the phase reversal?

What is called output resistance?

Mention any three application Zener diode.

Define electron motion in a semiconductor.

Explain knee voltage.

What is called reverse saturation current?

Mention the application of a oscillators.

A diode is called as a unidirectional device. Explain.

Distinguish between avalanche and zener breakdown.

What is Breakdown voltage?

What is meant by Biasing?

Define amplification.

How electron-hole pairs are created in a semiconductor material?

Part - B

Generic 3 - Answer All Question

Give the Schematic representation of valence band, conduction band, and forbidden energy gap. and draw energy band structure of (a) Insulators (b) Semiconductors (c) Metals?

What is electronics?.

Part - C

Generic 5 - Answer All Question

Explain the formation of PN junction diode. Discuss its V-1 characteristics.

State Boolean laws. Elucidate how they are used to simplify Boolean expressions with suitable example.

Explain the construction and working of a full wave rectifier.

For a BJT circuit shown, assume that the \('\beta'\) of the transistor is very large and V_BE= 0.7 V. The mode of operation.

For a BJT, the common base current gain a = 0.98 and the collector base junction reverse bias saturation l_cu = 0.6 \(\mu \)A. This BJT is connected in the common emitter mode and operated in the active region with a base drive current I_D = 20 \(\mu \)A. The collector current I_c for this mode of operating is

Explain the working principle of a solar cell. Mention its applications.

Write any two distinguishing features between Insulators, Metals and semiconductors and insulators an the basis of energy band diagrams.

Elucidate the formation of a N-type and P-type semiconductors.

Explain current transfer characteristics.

How does the change in temperature and application of electric field affect the behavior of materials and write the range of resistivity for each materials.

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12th Physics Monthly Test - 3 ( Semiconductor Electronics)

St. Britto Hr. Sec. School - Madurai

12th Physics Monthly Test - 3 ( Semiconductor Electronics)-Aug 2020

Part - A

Generic 2 - Answer All Question

What is called logical variables?

Define depletion region.

Explain the need for a feedback circuit in a transistor oscillator.

Define photovoltaic effect.

Distinguish between intrinsic and extrinsic semiconductors.

Define Rectification.

What is conduction band?

Define Zener effect.

Define Reverse bias.

What is the phase relationship between the AC input and output voltages in a common emitter amplifier? What is the reason for the phase reversal?

What is called output resistance?

Mention any three application Zener diode.

Define electron motion in a semiconductor.

Explain knee voltage.

What is called reverse saturation current?

Mention the application of a oscillators.

A diode is called as a unidirectional device. Explain.

Distinguish between avalanche and zener breakdown.

What is Breakdown voltage?

What is meant by Biasing?

Define amplification.

How electron-hole pairs are created in a semiconductor material?

Part - B

Generic 3 - Answer All Question

Give the Schematic representation of valence band, conduction band, and forbidden energy gap. and draw energy band structure of (a) Insulators (b) Semiconductors (c) Metals?

What is electronics?.

Part - C

Generic 5 - Answer All Question

Explain the formation of PN junction diode. Discuss its V-1 characteristics.

State Boolean laws. Elucidate how they are used to simplify Boolean expressions with suitable example.

Explain the construction and working of a full wave rectifier.

For a BJT circuit shown, assume that the \('\beta'\) of the transistor is very large and V BE= 0.7 V. The mode of operation.

Explain the working principle of a solar cell. Mention its applications.

Write any two distinguishing features between Insulators, Metals and semiconductors and insulators an the basis of energy band diagrams.

Elucidate the formation of a N-type and P-type semiconductors.

Explain current transfer characteristics.

How does the change in temperature and application of electric field affect the behavior of materials and write the range of resistivity for each materials.

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For a BJT circuit shown, assume that the \('\beta'\) of the transistor is very large and V_BE= 0.7 V. The mode of operation.