A forward biased pn junction diode has a resistance of the order of_____________?
A. O
B. kO
C. MO
D. None of the above
Electrical Engineering Mcqs
In a semiconductor, current conduction is due to________________?
In a semiconductor, current conduction is due to________________?
A. Only holes
B. Only free electrons
C. Holes and free electrons
D. None of the above
The impurity level in an extrinsic semiconductor is about_______________of pure semiconductor ?
The impurity level in an extrinsic semiconductor is about_______________of pure semiconductor ?
A. 10 atoms for 108 atoms
B. 1 atom for 108 atoms
C. 1 atom for 104 atoms
D. 1 atom for 100 atoms
The resistivity of pure germanium under standard conditions is about_______________?
The resistivity of pure germanium under standard conditions is about_______________?
A. 6 x 104 cm
B. 60 x cm
C. 3 x 106 cm
D. 6 x 10-4 cm
The most commonly used semiconductor is________________?
The most commonly used semiconductor is________________?
A. Germanium
B. Silicon
C. Carbon
D. Sulphur
A pentavalent impurity has______________Valence electrons?
A pentavalent impurity has______________Valence electrons?
A. 3
B. 5
C. 4
D. 6
Addition of trivalent impurity to a semiconductor creates many_______________?
Addition of trivalent impurity to a semiconductor creates many_______________?
A. Holes
B. Free electrons
C. Valence electrons
D. Bound electrons
As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor_______________?
As the dog to a pure semiconductor increases, the bulk resistance of the semiconductor_______________?
A. Remains the same
B. Increases
C. Decreases
D. None of the above
A hole in a semiconductor is defined as_________________?
A hole in a semiconductor is defined as_________________?
A. A free electron
B. The incomplete part of an electron pair bond
C. A free proton
D. A free neutron
A trivalent impurity has______________valence electrons?
A trivalent impurity has______________valence electrons?
A. 4
B. 5
C. 6
D. 3