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.Management Sciences
Category: Semiconductor Theory
Addition of trivalent impurity to a semiconductor creates many_______________?
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A. Holes
B. Free electrons
C. Valence electrons
D. Bound electrons
In the depletion region of a pn junction, there is a shortage of_________________?
A. Acceptor ions
B. Holes and electrons
C. Donor ions
D. None of the above
A forward biased pn junction diode has a resistance of the order of_____________?
A. O
B. kO
C. MO
D. None of the above
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
The random motion of holes and free electrons due to thermal agitation is called______________?
A. Diffusion
B. Pressure
C. Ionisation
D. None of the above
A semiconductor is formed by ______________bonds?
A. Covalent
B. Electrovalent
C. Co-ordinate
D. None of the above
At room temperature, an intrinsic silicon crystal acts approximately as_______________?
A. A battery
B. A conductor
C. An insulator
D. A piece of copper wire
When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on_________________?
A. Junction capacitance
B. Minority carriers
C. Majority carriers
D. None of the above
At absolute temperature, an intrinsic semiconductor has________________?
A. A few free electrons
B. Many holes
C. Many free electrons
D. No holes or free electrons
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