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. […]
Sodium has body centred packing. Distance between two nearest atoms is 3.7 Å. The lattice parameter is
Options
(a) 4.3 Å (b) 3.0 Å (c) 8.6 Å (d) 6.8 Å
Correct Answer:
4.3 […]
In intrinsic semiconductor at room temperature number of electrons and holes are
Options
(a) equal (b) zero (c) unequal (d) infinite
Correct Answer:
equal
Explanation:
No explanation available. Be the first to write […]
The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted. The resulting daughter is an
Options
(a) isomer of parent (b) isotone of parent (c) […]
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