Q. If a coil has diameter 'd' number of turns 'N' and form factor F then the inductance of the coil is proportional to

View solution

Q. Lowest resistivity of the following is

View solution

Q. Peak inverse voltage will be highest for

View solution

Q. In CE configuration, the output characteristics of a bipolar junction transistor is drawn between

View solution

Q. Assertion (A): The reverse current in a p-n junction is nearly constant.

Reason (R): The reverse breakdown voltage of a p-n diode depends on the extent of doping.

View solution

Q. An n type semiconductor is illuminated by a steady flux of photons with energy greater than the band gap energy. The change in conductivity Δσ obeys which relation?
[ Here, e is the electron charge, μn electron mobility, μp hole mobility, Δn (Δp) is the excess electron (hole) density ].

View solution

Q. The band gap of Si at room temperature is

View solution

Q. Spot the odd one out

View solution

Q. Transition capacitance is associated with __________ and depletion capacitance is associated with __________ diodes.

View solution

Q. If the energy gap of a semiconductor is 1.1 eV, then it would be.

View solution

Q. The maximum rectification efficiency in case of full wave rectifier is

View solution

Q. For a full wave bridge rectifier supplied with 50 Hz a.c., the lowest ripple frequency will be

View solution

Q. When an electron rises through a potential of 100 V it will acquired an energy of

View solution

Q. Which one of the following gain equations is correct for a MOSFET common-source amplifier?

(gm is mutual conductance, and RD is load resistance at the drain)

View solution

Q. If 1 kVA transformer is used for all of the following rectifiers, the d.c. power availability will be least in case of

View solution

Q. In which of the following does a negative resistance region exist in the v-i characteristics?

View solution

Q. The intrinsic resistivity of silicon at 300 K is about

View solution

Q. What happens when forward bias is applied to a junction diode?

View solution

Q. A differential amplifier is invariably used in the I/P stage of all OP-amps. This is done basically to produce the OP-amp with a very high.

View solution

Q. The addition of impurity in extrinsic semiconductor is about 1 part in 10⁸ parts.

View solution