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Electronic Principles

Electronic Principles
The number of free electrons and holes in intrinsic semiconductor increases when the temperature

Decreases
Increases
None of these
0oC
Stays the same

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Electronic Principles
Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91?

200 W
20 W
1000 W
None of these
100 W

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Electronic Principles
In a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point

None of these
off the load line
up
down
nowhere

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Electronic Principles
The saturation point is approximately the same as

None of these
cutoff point
lower end of the load line
upper end of the load line
infinity

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Electronic Principles
A device that converts thermal energy to electrical energy is called a:

piezoelectric devices
chemical cell
solar cell
None of these
thermocouple

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Electronic Principles
The current gain of a transistor is defined as the ratio of the collector current to the

supply current
None of these
collector current
emitter current
base current

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