Q. Zener diode is invariably used with

View solution

Q. The relation between plate current and plate voltage of a vacuum diode is called

View solution

Q. Given that the band gap of cadmium sulphide is 2.5 eV, the maximum photon wavelength, for e¯-hole pair generation will be

View solution

Q. Hall effect can be used

View solution

Q. The probability giving distribution of electrons over a range of allowed energy levels is known as

View solution

Q. Hall coefficient is reciprocal of charge density.

View solution

Q. Under low level injection assumption, the infected minority carrier current for an extrinsic semiconductor is essentially the

View solution

Q. As the reverse voltage is increased, the depletion layer

View solution

Q. The cascade amplifier is a multistage configuration of

View solution

Q. The light output of LED varies as (current)ⁿ. The value of n is about

View solution

Q. If an electron move through a potential difference of 500 V, the energy possesses by it will be

View solution

Q. In an intrinsic semiconductor, the intrinsic charge concentration at any absolute temperature T is proportional to

View solution

Q. The conductivity of an intrinsic semiconductor is (symbols have the usual meanings).

View solution

Q. The current due to thermionic emission is proportional to

View solution

Q. For radiating ultraviolet rays, LEDs use

View solution

Q. The forbidden band in semiconductors is of the order of

View solution

Q. For an P-N-P transistor in normal operation its junction are biased as

View solution

Q. A FET is to be operated as voltage variable resistor. For this drain to source voltage VDS should be,

View solution

Q. Assertion (A): FET has characteristics very similar to that of pentode.

Reason (R): Both FET and pentode are voltage controlled devices.

View solution

Q. The current gain of a bipolar transistor drops at high frequencies because of

View solution