When germanium is doped with phosphorus what type of semiconductor is produced?
Options
(a) N-type (b) P-type (c) Both (a) and (b) (d) None of these
Correct Answer:
N-type
Explanation:
No explanation available. […]
The term liquid crystal refers to a state that is intermediate between
Options
(a) Crystalline solid and amorphous liquid (b) Crystalline solid and vapour (c) Amorphous liquid and its vapour (d) A crystal […]
In a transistor the collector current is always less than the emitter current because
Options
(a) Collector side is reverse biased and the emitter side is forward biased (b) A few electrons are […]
Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54Å. The value of lattice constant for this lattice is
Options
(a) 2.54 Å (b) 3.59 Å (c) 1.27 Å (d) 5.08 […]
The minimum number of NAND gates used to construct an OR gate is
Options
(a) 4 (b) 6 (c) 5 (d) 3
Correct Answer:
3
Explanation:
No explanation available. Be the first to […]
For the action of a common Base (CB) transistor, (E=emitter, B= base, C= collector) the required CB, EB junction bias conditions are
Options
(a) Both EB and CB junction forward bias (b) Both […]
If α (current gain) of transistor is 0.98, then what is the value of β (current gain) of the transistor?
Options
(a) 0.49 (b) 49 (c) 4.9 (d) 5
Correct Answer:
49
Explanation: […]
In an NPN transistor the collector current is 24 mA. If 80% of the electrons reach collector, its base current in mA is
Options
(a) 36 (b) 26 (c) 16 (d) 6
Correct Answer: […]
In common base circuit of a transistor, current amplification factor is 0.95. Calculate the emitter current, if base current is 0.2 mA.
Options
(a) 2 mA (b) 4 mA (c) 6 mA (d) […]
Zenor diode is used for
Options
(a) amplification (b) rectification (c) voltage regulation (d) produce oscillation in an oscillator
Correct Answer:
voltage regulation
Explanation:
No explanation available. Be the first to write the […]
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