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Electronic Principles

Electronic Principles
If the base supply voltage increases, the Q point moves

up
down
None of these
nowhere
off the load line

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Electronic Principles
The barrier potential accross each depletion layer is

20 V
None of these
0.8 V
0.7 V

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Electronic Principles
A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation?

200 mW
None of these
10 mW
20 mW
300 mW

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Electronic Principles
The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:

One-half the primary current
Same as the primary current
No more than 10% less than the primary current
None of these
Twice the primary current

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Electronic Principles
Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?

100 Ohm
30 Ohm
None of these
20 Ohm
10 Ohm

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Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

0.17 V
18.8 V
20 V
None of these
10.17 V

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