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Electronic Principles

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

0oC
Increases
Decreases
None of these
Stays the same

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Electronic Principles
The merging of a free electron and a hole is called

Recombination
Covalent bonding
Lifetime
Thermal energy
None of these

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Electronic Principles
Doubling the number of turns of wire in an inductor:

reduces the value of inductance by one-fourth
multiplies the value of inductance by four
multiplies the value of inductance by two
reduces the value of inductance by one-half
None of these

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Electronic Principles
A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?

90 Ohm - 110 ohm
99 Ohm - 102 ohm
None of these
98 Ohm - 100.1 ohm
90 Ohm - 101 ohm

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Electronic Principles
Doubling the operating frequency of a purely capacitive circuit:

has no effect on the total circuit current
thrice the amount of total current
None of these
cuts the total current by one-half
doubles the amount of total current

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Electronic Principles
What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm?

690 ohm
150 ohm
220 ohm
None of these
445 ohm

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