Q. The presence of some holes in an intrinsic semiconductor at room temperature is due to

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Q. Holes act like

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Q. Assertion (A): Silicon is less sensitive to changes in temperature than germanium.

Reason (R): It is more difficult to produce minority carriers in silicon than in germanium.

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Q. The number of protons in a silicon atom is

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Q. The emitter follower is widely used in electronic instrument because

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Q. A cascade amplifier stage is equivalent to

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Q. Fermi level is the amount of energy in which

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Q. When avalanche breakdown occurs covalent bonds are not affected.

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Q. In p channel JFET, VGS is positive.

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Q. Human body cannot sustain electric current beyond

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Q. To produce p type semiconductor we add

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Q. Voltage series feedback (Also called series-shunt feedback) results in

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Q. How many free electrons does a p type semiconductor has?

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Q. Which of the following has highest resistivity?

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Q. Assertion (A): In p-n-p transistor collector current is termed negative.

Reason (R): In p-n-p transistor holes are majority carriers.

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Q. The sensitivity of human eyes is maximum at

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Q. Power diodes are generally

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Q. The inductance of a single layer solenoid of 10 turns is 5 μH. Which one of the following is the correct value of inductance when the number of turns is 20 and the length is doubled.

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Q. The depletion layer width of Junction

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Q. Forbidden energy gap in germanium at 0 K is about

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