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With an AC input from 50 Hz power line, the ripple frequency is

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Important Questions on Solids and Semiconductor Devices

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 1]>Q 94
An electric field is applied to a semiconductor. Let the number of charge carriers be n and the average drift speed be v. If the temperature is increased
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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 1]>Q 95
The drift current in a p-n junction is 
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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 1]>Q 96
The diffusion current in a p-n junction is 
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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 1]>Q 97
Diffusion current in a p-n junction is greater than the drift current in magnitude
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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 2]>Q 1
Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are 0.36 m2 V-1 s-1 and 0.17 m2 V-1 s-1. The electron and hole densities are each equal to 2.5x1019 m3. The electrical conductivity of germanium is
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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 2]>Q 2

The current through an ideal p-n junction shown in the circuit diagram will be

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 2]>Q 3

In the given figure, which of the diodes are forward biased?

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 10 - Solids and Semiconductor Devices>Objective Problems [Level 2]>Q 4

The equivalent resistance of the circuit across AB is given by,

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