Q. The circuit shown in the figure is best described as a

View solution

Q. The current density J, free electron mobility μn, hole mobility μp , magnitude of free electron and hole concentration ni electric field E and charge on electron e, in intrinsic semiconductor are related as

View solution

Q. In bipolar transistors dc current gain is

View solution

Q. Which is correct for a vacuum triode?

View solution

Q. Figure represents a

View solution

Q. To avoid thermal runaway in the design of an analog circuit, the operating point of the BJT should be such that it satisfies the condition.

View solution

Q. Hall coefficient KH and charge density ρ are related as

View solution

Q. In p type semiconductors the conduction due to holes ( = σp ) is (where e = charge on hole, μp is hole mobility and ρ is hole concentration)

View solution

Q. The Ebers-moll equation for IE in CB configuration is given by

View solution

Q. The small signal input impedance of a transistor whose output is shorted for the measuring signal is

View solution

Q. The dipole moment per unit volume as a function of E in the case of an insulator is given by (symbols have the usual meaning).

View solution

Q. The diode and the moving coil milliammeter of figure are assumed to be ideal. The meter reading is

View solution

Q. The V-I characteristic of a semi-conductor diode is shown in figure. From this figure it can be concluded that

View solution

Q. Which of the following expressions may be used to correctly describe the temperature (T) variation of the intrinsic carrier density (ni) of a semiconductor?

View solution

Q. Figure represents a

View solution

Q. Figure shows the terminals of a transistor in plastic package TO 18. Then

View solution

Q. The network shown in the figure represents a

View solution

Q. In a junction transistor biased for operation at emitter current 'IE' and collector current 'IC' the transconductance 'gm' is.

View solution

Q. CE saturation resistance of n-p-n transistor is

View solution

Q. Typical values of h parameters at about 1 mA collector current for small signal audio amplifier in CE configuration are :

View solution