Electronic Principles MCQ
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In an intrinsic semiconductor, the number of free electrons
Equals the number of holes
Is less than the number of holes
Is greater than the number of holes
Impossible to say
A device that converts mechanical into electrical energy is?
Which one of the following kinds of materials has the lowest permeability?
A diamagnetic material
A paramagnetic material
A feiTomagnetic material
All of the above
The total impedance of a parallel RLC circuit:
always increases as the applied frequency increases
is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
always decreases as the applied frequency increases
is maximum at the resonant frequency
The rise time of a pulse waveform is the time required for the voltage to rise:
from zero to its rms value
from zero to its peak value
from 10% of the peak value to 70.7% of the peak value
from 10% of the peak value to 90% of the peak value
There are 5 questions to complete.