Semiconductor Devices and Logic Gates · Physics · TS EAMCET
MCQ (Single Correct Answer)
1
Match the devices given in List-I with their uses given in List-II.
| List-I | List -II |
| a Transistor | e Filter circuit |
| b Diode | f Voltage regulator |
| c Zener diode | g Rectifier |
| d Capacitor | h Amplifier |
The correct answer is
TG EAPCET 2024 (Online) 11th May Morning Shift
2
To get output 1 for the following logic circuit, the correct choice of the inputs is 
TG EAPCET 2024 (Online) 11th May Morning Shift
3
In an $n$-type semiconductor, electrons are majority charge carriers and holes are minority charge carriers. The charge of an $n$-type semiconductor is
TG EAPCET 2024 (Online) 10th May Evening Shift
4
The region in the output voltage versus input voltage graph where a transistor can be used as an amplifier is
TG EAPCET 2024 (Online) 10th May Evening Shift
5
The voltage gain of a transistor in common emitter configuration is 160 . The resistances in base and collector sides of the circuit are $1 \mathrm{k} \Omega$ and $4 \mathrm{k} \Omega$ respectively. If the change in base current is $100 \mu \mathrm{~A}$, then the change in output current is
TG EAPCET 2024 (Online) 10th May Morning Shift
6
Normally a capacitor is connected across the output terminals of a rectifier to
TG EAPCET 2024 (Online) 10th May Morning Shift
7
A zener diode of zener voltage 30 V is connected in circuit as shown in the figure. The maximum current through the zener diode is
TG EAPCET 2024 (Online) 9th May Evening Shift
8
Two logic gates are connected as shown in the figure. If the inputs are $A=1$ and $B=0$, then the values of $Y_1$ and $Y_2$ respectively are
TG EAPCET 2024 (Online) 9th May Evening Shift
9
The concentration of electrons in an intrinsic semiconductor is $6 \times 10^{15} \mathrm{~m}^{-3}$. On doping with an impurity, the electron concentration increases to $4 \times 10^{22} \mathrm{~m}^{-3}$. In thermal equilibrium, the concentration of the holes in the doped semiconductor is
TG EAPCET 2024 (Online) 9th May Morning Shift
10
Three logic gates are connected as shown in the figure. If the inputs are $A=1$ and $B=1$, then the values of $Y_1$ and $Y_2$ respectively are
TG EAPCET 2024 (Online) 9th May Morning Shift