If a small amount of antimony is added to germanium crystal
Options
(a) it becomes a p-type semiconductor (b) the antimony becomes an acceptor atom (c) there will be more free electrons than […]
To obtain a p-type semiconductor, germanium must be doped with
Options
(a) Arsenic (b) Antimony (c) Indium (d) Phosphorus
Correct Answer:
Indium
Explanation:
P-type semiconductor is obtained when Si or Ge (tetravalent) is […]
In forward biasing of the p-n junction
Options
(a) the positive terminal of the battery connected to p-side and the depletion region becomes thick (b) the positive terminal of the battery is connected […]
What is the voltage gain in a common-emiiter amplifier, when input resistance is 4 Ω and load resistance is 24 Ω? Take β=0.6
Options
(a) 3.6 (b) 4.8 (c) 2.4 (d) 1.2
Correct Answer: […]
For transistor action: (1) Base, emitter and collector regions should have similar size and doping concentrations. (2) The base region must be vary thin and lightly doped. (3) The emitter-base junction is forward biased and […]
In depletion layer of unbiased P-N junction
Options
(a) It is devoid of charge carriers (b) Has only electrons (c) Has only holes (d) PN junction has a weak electric field
Correct Answer: […]
The device can act as a complete electronic circuit is
Options
(a) junction diode (b) integrated circuit (c) junction transistor (d) zener diode
Correct Answer:
integrated circuit
Explanation:
Integrated circuit can act as […]
Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has high melting point?
Options
(a) metallic bonding (b) […]
Which one of the following statement is FALSE about semiconductors?
Options
(a) Pure Si doped with trivalent impurities gives a p-type semiconductor (b) Majority carriers in a n-type semiconductor are holes (c) Minority […]
Minority carriers in a p-type semiconductor are
Options
(a) Free electrons (b) Holes (c) Neither holes nor free electrons (d) Both holes and free electrons
Correct Answer:
Free electrons
Explanation:
No explanation available. […]
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