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Electronic Principles

Electronic Principles
How much power is being dissipated by a 1000 W resistance that has 25 V applied to it?

80 W
None of these
0.24 W
325 kW
0.625 W

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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:

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

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Electronic Principles
Doubling the diameter of the coil in an inductor:

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

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Electronic Principles
Absolute Zero temperature equals

-273o C
None of these
-276o C
25o C
0o C

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Electronic Principles
1 Microfarad is the same as:

None of these
1 million picofarads
1 millionth of a picofarad
1000 millifarads
1 million farads

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Electronic Principles
The total impedance of a series RLC circuit:

always increases as the applied frequency increases
is maximum at the resonant frequency
always decreases as the applied frequency increases
None of these
is minimum at the resonant frequency

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