Forward current through a semi conductor diode circuit is due to
A. minority carriers
B. majority carriers
C. holes
D. electron
Forward current through a semi conductor diode circuit is due to Read More »
Physics
The value of resistivity for insulator is of the order of
A. 105 ohm metre
B. 106 ohm metre
C. 107 ohm metre
D. 108 ohm metre
The value of resistivity for insulator is of the order of Read More »
Which of following band is completely filled in case of conductors?
A. Conduction band
B. Fermi band
C. Valence band
D. Forbidden band
Which of following band is completely filled in case of conductors? Read More »
Depletion region of a junction is formed
A. during the manufacturing process
B. under forward bias
C. under reverse bias
D. when temperature varies
Depletion region of a junction is formed Read More »
The simplest type of rectification known as half wave rectification is obtained by
A. using a transistor
B. suppressing the harmonics in A.C voltage
C. suppressing half wave of A.C supply by using diode
D. using a Coolidge tube
The simplest type of rectification known as half wave rectification is obtained by Read More »
In p-n-p transistor the collector current is
A. equal to emitter current
B. slightly less than emitter current
C. greater than emitter current
D. any of above
In p-n-p transistor the collector current is Read More »
The especially designed semiconductor diodes used as indicator lamps in electronic circuits are
A. The switch
B. The light emitting diode
C. The photo diodes
D. Solar cells
The device or circuit used for conversion of A.C. into D.C. is called
A. An amplifier.
B. A rectifier
C. Filtering circuit
D. Converter.
The device or circuit used for conversion of A.C. into D.C. is called Read More »
The semiconductor diode can be used as a rectifier because
A. It has low resistance to the current flow when forward biased & high resistance when reverse biased.
B. It has low resistance to the current flow when forward biased.
C. It has high resistance to the current flow when reverse biased
D. Its conductivity increases with rise of temperature
The semiconductor diode can be used as a rectifier because Read More »