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Electronic Principles

Electronic Principles
Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value?

35.4 V
38.74 V
None of these
30.4 V
37.4 V

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Electronic Principles
The graph of current gain versus collector current indicates that the current gain

varies enormously
None of these
is contant
varies slightly
equals the collector current divided by the base current

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Electronic Principles
A dielectric material is:

a good conductor
a good insulator
a good conductor of magnetic fields
a poor conductor of electrostatic fields
None of these

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

emitter current
collector current
supply current
base current
None of these

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Electronic Principles
What is the inductive reactance of a 2-H coil operating at 60 Hz?

120 Ohm
60 Ohm
754 Ohm
None of these
30 Ohm

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Electronic Principles
What is the smallest number of polarities required for current flow?

Two - a negative terminal and a positive terminal
One - a negative terminal
None of these
Four - two negative and two positive
Three - negative, positive and neutral terminals

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