Computer Programming MCQs

5739 MCQs  (Page 517 of 574)

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The most commonly used semiconductor is________________?
A. Germanium
B. Silicon
C. Carbon
D. Sulphur
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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
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A pentavalent impurity has______________Valence electrons?
A. 3
B. 5
C. 4
D. 6
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As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor_______________?
A. Remains the same
B. Increases
C. Decreases
D. None of the above
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Addition of trivalent impurity to a semiconductor creates many_______________?
A. Holes
B. Free electrons
C. Valence electrons
D. Bound electrons
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A trivalent impurity has______________valence electrons?
A. 4
B. 5
C. 6
D. 3
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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
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The strength of a semiconductor crystal comes from______________?
A. Forces between nuclei
B. Forces between protons
C. Electron-pair bonds
D. None of the above
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The resistivity of a pure silicon is about _______________?
A. 100 o cm
B. 6000 o cm
C. 3 x 105 o m
D. 6 x 10-8 o cm
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A semiconductor is formed by ______________bonds?
A. Covalent
B. Electrovalent
C. Co-ordinate
D. None of the above
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Word of the Day
16 Jul
Volatile
(of a substance) easily evaporated at normal temperatures.
بدلتے مزاج والا، کافور صفت

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