Electronic Devices And Circuits

Exercise: Electronic Devices And Circuits

📂 Electronic Devices And Circuits ✅

Questions for: Electronic Devices And Circuits

In a specimen of n type semiconductor, the initial concentration of holes and electrons is p_no and n_no. When the specimen is subjected to radiation, the hole and electron concentration increase to p_n and n_n. Then

p_n - p_no = n_n - n_no

p_n + p_no = n_n + n_no

p_n - p_no = n_no + n_no

p_n + p_no = n_n - p_no

Answer: A

No answer description is available. Let's discuss.

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If μ_n is mobility of free electron and μ_p is mobility of holes then for silicon at 300 K

μ_n = μ_p

μ_n > μ_p

μ_n < μ_p

μ_n may be more or less than μ_p

Answer: B

No answer description is available. Let's discuss.

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When a substance is repelled by a magnetic field it is known as

ferromagnetic

antiferromagnetic

diamagnetic

paramagnetic

Answer: C

No answer description is available. Let's discuss.

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Hay bridge is suitable for measuring inductance of which one of the following inductors?

Having Q value less than 10

Having Q value greater than 10

Having any value of Q

Having phase angle of reactance very large

Answer: B

No answer description is available. Let's discuss.

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Which of the following materials has the highest electrical conductivity?

Steel

Silver

Aluminium

Zinc

Answer: B

No answer description is available. Let's discuss.

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