What is the width of the depletion layer of a P-N junction when it is (i) forward biased (ii) reverse biased?
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Semiconductor Electronics: Materials, Devices and Simple Circuits questions
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What are the effects on the depletion layer when the diode is connected in forward bias and reverse bias condition?
Explain current flow in N- and P-type semiconductors.
How does the conductivity of semiconductors increase with increasing temperature?
Which currents are produced when an external electric field is applied on a semi-conductor?
What is called P-N junction? Name the methods of making P-N junction. Explain the diffusion method of making $P - N$ junction.
View full solution →
Classify metals, conductors and semiconductors.
Explain the difference between conductor, insulator and semiconductor on the basis of energy band in solids.
What is called extrinsic semiconductor? Explain doping process.
Select one donor impurity from the following : Boron (B), Aluminum (Al) and Arsenic (As).
Name the crystal structure of intrinsic semiconductor.
Write the names of any two compound (organic) semiconductors.###Write the names of any two organic compound semiconductors.
In the circuit symbol of a semiconductor diode, the arrow is pointing towards whom?
How does the junction plane behave in the case of reverse bias?
Examples of inorganic semiconductors is:
- AGe
- ✓CdS
- Canthracene
- Dpolyanilie
Answer: B.
View full solution →The function of rectifier is :
- Ato amplify the current
- Bto amplify the voltage
- Cconverting direct current into alternating current
- ✓converting alternating current into direct current
Answer: D.
View full solution →Plate resistance when saturated current flows in the diode $r_p$ is :
- Azero
- ✓infinite
- Ca certain number
- Ddata is inadequate
Answer: B.
View full solution →The depletion region of a $P - N$ junction consists of :
- Aonly electrons
- Bonly hole
- Cboth electron and hole
- ✓neutral ion
Answer: D.
View full solution →A diode as a rectifier changes :
- Ain alternating current of direct current
- ✓alternating current into direct current
- Chigh voltage to low voltage or low voltage to high voltage
- Dchanging direct current into fixed direct current
Answer: B.
View full solution →What are N-type semiconductors? Their conductivity is higher than that of pure semiconductors. Why? Explain with figure.
On the basis of band theory, differentiate between conductors, insulators and conductors.
What is meant by rectification? Draw a diagram of a half wave rectifier electric circuit. Write a brief description of its working. Draw the waveforms of input voltage and output voltage for this rectifier circuit.
What is meant by forward bias and reverse bias of p-n junction diode? Draw experimental electrical circuit diagram to study V-I characteristic in forward bias and reverse bias of p-n junction diode. Draw forward bias and reverse bias V-I characteristic curves of p-n junction diode and briefly explain the following :
(i) Threshold or cut-in voltage
(ii) Breakdown voltage.
(i) Threshold or cut-in voltage
(ii) Breakdown voltage.
Draw the complete I-V characteristic curve for an ideal P-N junction diode. Define the dynamic resistance in the forward bias state.
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