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NEET Physics : Semiconductor Electronics: Materials, Devices and Simple Circuits

Multiple Choice Questions

191.

The output (X) of the logic circuit shown in figure will be

$X = \overset{=}{A} . \overset{=}{B}$
$X = \bar{A . B}$
X = A .B
$X = \bar{A + B}$

192.

The output Y ofthe logic circuit given below is

$A + B$
$A$
$\bar{(A + B)} . A$
$\bar{(\bar{A} + B)} . A$

193.

In the bandgap between valence band and conduction band in a material is 5.0 eV, then the material is

semiconductor
good conductor
superconductor
insulator

194.

In a transistor output characteristics commonly used in common emitter configuration, the base current I_B, the collector current l_C and the collector emitter voltage V_CE have values of the following orders of magnitude in the active region

I_B and I_C both are in µA and V_CE in volt
I_B is in µA and I_C is in mA and V_CE in volt
I_B is in mA and I_C is in µA and V_CE in volt
I_B is in mA and I_C is in mA and V_CE in mV

195.

The inputs to the digital circuit are as shown below. The output Y is

$A + B + \bar{C}$
$(A + B) \bar{C}$
$\bar{A} + \bar{B} + \bar{C}$
$\bar{A} + \bar{B} + C$

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NEET Physics : Semiconductor Electronics: Materials, Devices and Simple Circuits

Multiple Choice Questions