Punjab 10th Class Physics Chapter 7 Basic Electronics Mcqs Test Online

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Question 1 of 20

Physics

1. Which of the following is an insulator?

1.Aluminium

2.Silicon

3.Copper

4.Plastic

Question 1 of 20

Question 2 of 20

2. A and B are the two input of a NAND gate. Its output would be 1 when:

1.A = 0, B = 0

2.A = 1, B = 0

3.A = 0, B = 0

4.A = 1, B = 1

Question 2 of 20

Question 3 of 20

3. Which is not a true statement?

1.Germanium crystal acts as insulator in its purest form

2.Germanium is the member of 6th group of periodic table

3.Germanium forms covalent bond by sharing four electrons

4.Germanium has four electrons is its valence shell

Question 3 of 20

Question 4 of 20

4. The branch of applied physics in which we control the flow of electrons using diodes, transistors and other semi conductor devices in order to meet our various requirements is called:

1.Electricity

2.Metaphysics

3.Electronics

4.Mechanics

Question 4 of 20

Question 5 of 20

5. The output of a two-input NOR gate is 1 when:

1.A is 0 and B is 1

2.A is 1 and B is 0

3.Both A and B are 1

4.Both A and B are 0

Question 5 of 20

Question 6 of 20

6. If X = A.B, then X is 1 when:

1.A is 1 and B is 0

2.A is 0 and B is 1

3.A or B is 0

4.A and B are 1

Question 6 of 20

Question 7 of 20

7. AND gate can be formed by using two:

1.OR gates

2.NOT gates

3.NAND gates

4.NOR gates

Question 7 of 20

Question 8 of 20

8. Which is the semi conductor:

1.Germanium

2.Iron

3.Silver

4.Gold

Question 8 of 20

Question 9 of 20

9. The process by which electrons are emitted by a hot metal surface is known as:

1.Boiling

2.Evaporation

3.Conduction

4.Thermionic emission

Question 9 of 20

Question 10 of 20

10. The particles emitted from a hot cathode surface are:

1.Positive ions

2.Protons

3.Electrons

4.Negative ions

Question 10 of 20

Question 11 of 20

11. Those quantities whose values very continuously or remains constant are called:

1.Light quantities

2.Scalar quantities

3.Analogue quantities

4.Vector quantities

Question 11 of 20

Question 12 of 20

12. Which statement is not true:

1.Temperature is an analogue quantity

2.Microphone converts sound into electric potential

3.Amplifier is not an analogue circuit

4.Amplifier is an analogue circuit

Question 12 of 20

Question 13 of 20

13. The output of an OR gate would be 0 when:

1.Both of its input are 0

2.Any one of its two inputs is 1

3.One of its two inputs is zero

4.Both of its inputs are 1

Question 13 of 20

Question 14 of 20

14. Which statement is not true about semi-conductor:

1.Hexavalent impurity is usually added in them

2.The number of electron can be added according to our requirement

3.They are not good conductors in their purest form

4.They are not of such practical use is this state.

Question 14 of 20

Question 15 of 20

15. The two inputs of a NAND gate are A and B. Its output would be 0 when:

1.A = 1, B = 1

2.A = 1, B = 0

3.A = 0, B = 0

4.A = 0, B = 0

Question 15 of 20

Question 16 of 20

16. The output of a NAND gate is 0 when:

1.Any of its inputs is 0

2.Any of its inputs is 1

3.Both of its inputs are 1

4.Both of its inputs are 0

Question 16 of 20

Question 17 of 20

17. The logical operation performed by this gate is:

1.AND

2.NOR

3.OR

4.NAND

Question 17 of 20

Question 18 of 20

18. The output of an AND gate is only 1 when:

1.Anyone of the two

2.Both of its inputs are 0

3.Any one of the two inputs is 0

4.Both of its inputs are 1

Question 18 of 20

Question 19 of 20

19. In a n-type crystal, the majority carriers are:

1.Free electors

2.Positron

3.Protons

4.Holes

Question 19 of 20

Question 20 of 20

20. Atomic number of silver is 47, the number of its valence electrons would be _________.

1.2

2.32

3.8

4.18

Question 20 of 20

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