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Electronic Devices and Circuits

Electronic Devices and Circuits
Power diodes are generally

Silicon diodes
Germanium diodes
None of these
Either of the above

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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

1.01
0.99
100
99

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Electronic Devices and Circuits
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

True
False

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Electronic Devices and Circuits
Forbidden energy gap in germanium at 0 K is about

2 eV
10 eV
5 eV
0.78 eV

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Electronic Devices and Circuits
The sensitivity of human eyes is maximum at

Red portion of spectrum
Violet portion of spectrum
Green portion of spectrum
White portion of spectrum

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Electronic Devices and Circuits
Which variety of copper has the best conductivity?

Hard drawn copper
Pure annealed copper
Induction hardened copper
Copper containing traces of silicon

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