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Electronic Principles

Electronic Principles
An audio transformer has a turn ratio of 9, What is its impedance ratio?

9
81
85
6
None of these

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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

nowhere
off the load line
up
down
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?

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

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Electronic Principles
A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage?

707 V
651 V
None of these
208 V
700 V

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Electronic Principles
The direction of conventional current flow is:

from neutral to positive
from left to right
from negative to positive
None of these
from positive to negative

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Electronic Principles
Inductive reactance is measured in units of:

amperes per second
Ohm
volts per second
henrys
None of these

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