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

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Question 1 of 20

Physics

1. 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 = 1

3.A = 0, B = 0

4.A = 1, B = 0

Question 1 of 20

Question 2 of 20

2. 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 2 of 20

Question 3 of 20

3. Which of the following is an insulator?

1.Aluminium

2.Plastic

3.Copper

4.Silicon

Question 3 of 20

Question 4 of 20

4. Which is not a true statement?

1.Germanium has four electrons is its valence shell

2.Germanium crystal acts as insulator in its purest form

3.Germanium forms covalent bond by sharing four electrons

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

Question 4 of 20

Question 5 of 20

5. Which statement is not true:

1.Amplifier is an analogue circuit

2.Microphone converts sound into electric potential

3.Amplifier is not an analogue circuit

4.Temperature is an analogue quantity

Question 5 of 20

Question 6 of 20

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

1.Both of its inputs are 1

2.Any of its inputs is 0

3.Both of its inputs are 0

4.Any of its inputs is 1

Question 6 of 20

Question 7 of 20

7. Which is the semi conductor:

1.Germanium

2.Silver

3.Gold

4.Iron

Question 7 of 20

Question 8 of 20

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

1.Any one of its two inputs is 1

2.Both of its inputs are 1

3.One of its two inputs is zero

4.Both of its input are 0

Question 8 of 20

Question 9 of 20

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

1.Free electors

2.Positron

3.Holes

4.Protons

Question 9 of 20

Question 10 of 20

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

1.Hexavalent impurity is usually added in them

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

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

4.They are not good conductors in their purest form

Question 10 of 20

Question 11 of 20

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

1.Analogue quantities

2.Vector quantities

3.Light quantities

4.Scalar quantities

Question 11 of 20

Question 12 of 20

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

1.2

2.18

3.32

4.8

Question 12 of 20

Question 13 of 20

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

1.Evaporation

2.Boiling

3.Conduction

4.Thermionic emission

Question 13 of 20

Question 14 of 20

14. AND gate can be formed by using two:

1.NAND gates

2.OR gates

3.NOR gates

4.NOT gates

Question 14 of 20

Question 15 of 20

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

1.Any one of the two inputs is 0

2.Anyone of the two

3.Both of its inputs are 1

4.Both of its inputs are 0

Question 15 of 20

Question 16 of 20

16. The logical operation performed by this gate is:

1.OR

2.NOR

3.NAND

4.AND

Question 16 of 20

Question 17 of 20

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

1.Both A and B are 0

2.Both A and B are 1

3.A is 0 and B is 1

4.A is 1 and B is 0

Question 17 of 20

Question 18 of 20

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

1.A = 1, B = 0

2.A = 1, B = 1

3.A = 0, B = 0

4.A = 0, B = 0

Question 18 of 20

Question 19 of 20

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

1.Negative ions

2.Positive ions

3.Electrons

4.Protons

Question 19 of 20

Question 20 of 20

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

1.A or B is 0

2.A is 0 and B is 1

3.A is 1 and B is 0

4.A and B are 1

Question 20 of 20

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