If the feedback voltage is increased in a negative feedback amplifier, then
Options
(a) both gain and distortion decrease (b) the distortion increase (c) the gain decrease and distortion increase (d) the gain […]
In p- type semiconductor, the acceptor level lies
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(a) near the conduction band (b) halfway between conduction and valence band (c) within conduction band (d) near the valence band
Correct Answer:
near […]
Which one of the following statements is not correct in case of a semiconductor?
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(a) Temperature coefficient of resistance is negative (b) Doping increases conductivity (c) At absolute zero temperature, it behaves […]
In a ionised gas,the mobile charge carriers are
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(a) electrons (b) both positive ad negative ions (c) electrons and positively charged ions (d) positive ions only
Correct Answer:
electrons and positively charged […]
In a vaccum triode the function of grid voltage is
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(a) To maintain electron flow (b) To increase the voltage (c) For long lasting of valve (d) To check the flow of […]
When germanium is doped with phosphorus what type of semiconductor is produced?
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(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
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(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
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(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
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(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 […]
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