NEET
Practice Test 12
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A metallic bond differs form a covalent bond in that

Which one is the weakest type of bonding in solids ?

In germanium the energy gap is about 0.75 eV. The wave length of light which germanium starts absorbing is

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The ratio of forward biased to reverse biased resistance for pn junction diode is

One serious drawback of semi-conductor devices is

NAND and NOR gates are called universal gates primarily because they

The intrinsic semi conductor becomes an insulator at

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    [Hint : At 0K (–273ºC) motion of free electron stop i.e.,there is no electron in conduction band therefore at 0K intrinsic semiconductor becomes insulator.]

In insulator

Minority carriers in a p-type semiconductor are

  • Solution

    Minority carriers in a p-type semiconductor are free electrons.

An oscillator is nothing but an amplifier with

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SEMICONDUCTOR ELECTRONICS :MATERIALS, DEVICES AND SIMPLE CIRCUITS
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