Basic Electronics 1
Basic Electronics Quiz
Test your knowledge of semiconductor technology, diodes, and rectifiers with our Basic Electronics Quiz! This quiz is designed for students, enthusiasts, and professionals seeking to enhance their understanding of electronic concepts.
Key features of the quiz:
- 22 multiple choice questions
- Covers fundamental principles of basic electronics
- Score and evaluate your understanding
Electron-hole pair are produced by
Recombination
Thermal energy
ionization
Doping
Each atom in a silicon crystal has
Four valence electrons
four conduction electrons
eight valence electrons, four of its own and four shared
No valence electrons because all are shared with other atoms
.The current in a semiconductor is produced by
electrons only
holes only
negative ions
Both electrons and holes
The process of adding an impurity to an intrinsic semiconductor is called
doping
recombination
Atomic modification
Ionization
A trivalent impurity is added to silicon to create
germanium
a p-type semiconductor
an n-type semiconductor
a depletion region
The purpose of pentavalent impurity is to
reduce the conductivity
increase the number of holes
increase the number of free electrons
Create minority carriers
For a silicon diode, the value of the forward-bias voltage typically
must be greater than 0.3V
must be greater than 0.7V
depends on the width of depletion region
Depends on the concentration of majority carriers
When forward biased , a diode
blocks current
conducts current
has a high resistance
drops a large voltage
When a voltmeter is placed across a forward-biased diode, it will read a voltage approximately equal to
the bias battery voltage
0V
the diode barrier potential
the total circuit voltage
The term bias means
the ration of majority carriers to minority carriers
the amount of current across a diode
a dc voltage is applied to control the operation of a device
none of the above
In a LED, the light is produced by a solid state process called as
light radiation
electroluminescence
light multiplication
phospherence
Efficiency of LED is given by
light to light conversion
light to electrical conversion
electrical power to visible light conversion
none of above
The wavelength of the light emitted and its color depends on the
forward voltage
forward current
band gap energy of the material forming P-N junction
none of the above
.Although current is blocked in reverse bias,
there is some current due to majority carrier
there is very small current due to minority carriers
there is an avalanche current
none of the above
When a 60Hz sinusoidal voltage is applied to the input of a half-wave rectifier, the output frequency is
120Hz
30Hz
60Hz
0Hz
The peak value of the input to a half-wave rectifier is 10V.The approximate peak value of the output is
10V
3.18V
10.7V
9.3V
When a 60Hz sinusoidal voltage is applied to the input of a full-wave rectifier, the output frequency is
120Hz
60Hz
240Hz
0Hz
.The ideal dc output voltage of a capacitor-input filter is equal to
The peak value of the rectified voltage
The average value of the rectified voltage
The rms value of the rectified voltage
None of the above
.If the load resistance of a capacitor-filtered full-wave rectifier is reduced, the ripple voltage
increases
decreases
is not affected
has a different frequency
The average value of full-wave rectified voltage with a peak value of 75V is
53V
47.8V
37.5V
23.9V
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