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Electronic Devices and Circuits

Electronic Devices and Circuits
A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is

100
99
1.01
0.99

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Electronic Devices and Circuits
At room temperature the current in an intrinsic semiconductor is due to

Holes and electrons
Holes
Electrons
Ions

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Electronic Devices and Circuits
In monolithic ICs, all the components are fabricated by

Evaporation
Oxidation
Diffusion process
None

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Electronic Devices and Circuits
For a NPN bipolar transistor, what is the main stream of current in the base region?

Drift of electrons
Diffusion of electrons
Drift of holes
Diffusion of holes

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Electronic Devices and Circuits
How many free electrons does a p type semiconductor has?

Only those produced by thermal energy
Only those produced by doping
Any of the above
Those produced by doping as well as thermal energy

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Electronic Devices and Circuits
Piezoelectric quartz crystal resonators find application where

Signal amplification is required
Modulation of signal is required
Signal frequency control is required
Rectification of the signal is required

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