Kishkindha UniversityPre-requisite for Basic Electronics-2023

1. A P-type semiconductor is

• a) a possibility charged
• b) negatively charged
• c) uncharged
• d) unchar ged at 0 K but charged at higher temperature

2. Bridged rectifier uses

• a) four diodes
• b) six diodes
• c) two diodes
• d) one diode

3. The Boolean expression of an OR gate is

• a) A.B
• b) A’B+AB’
• c) A+B
• d) A’B’

4. The gate which is used to reverse the output obtained is

• a) NOR
• b) NAND
• c) XOR
• d) NOT

5. Which of the following gate will give a 0 when both

• a) AND
• b) OR
• c) NAND
• d) XOR

6. In boolean algebra, the bar sign (-) indicates

• a) OR operation
• b) AND operation
• c) NOT operation
• d) None of the above

7. Which gate is known as universal gate

• a) NAND
• b) AND
• c) OR
• d) None

8. Which of the following are the arithmetic logic gates

• a) XOR
• b) XNOR
• c) Both (a) and (b)
• d) None

9. Which of the following signifies a NOT gate

• a) 1(input)-0(output)
• b) 1_0(input)-1(output)
• c) 0_0(input)-0(output)
• d) None

10. In a N type semiconductor , there are

• a) no minority carrier
• b) immobile negative ion
• c) immobile positive ion
• d) holes as majority carrier