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

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Question 1 of 20

Physics

1. The logical operation performed by this gate is:

1.NOR

2.OR

3.AND

4.NAND

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.Metaphysics

2.Electronics

3.Electricity

4.Mechanics

Question 2 of 20

Question 3 of 20

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

1.One of its two inputs is zero

2.Both of its input are 0

3.Both of its inputs are 1

4.Any one of its two inputs is 1

Question 3 of 20

Question 4 of 20

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

1.A = 1, B = 0

2.A = 0, B = 0

3.A = 0, B = 0

4.A = 1, B = 1

Question 4 of 20

Question 5 of 20

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

1.Protons

2.Free electors

3.Holes

4.Positron

Question 5 of 20

Question 6 of 20

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

1.18

2.32

3.8

4.2

Question 6 of 20

Question 7 of 20

7. Which is not a true statement?

1.Germanium forms covalent bond by sharing four electrons

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

3.Germanium crystal acts as insulator in its purest form

4.Germanium has four electrons is its valence shell

Question 7 of 20

Question 8 of 20

8. 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 8 of 20

Question 9 of 20

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

1.Positive ions

2.Electrons

3.Protons

4.Negative ions

Question 9 of 20

Question 10 of 20

10. Which is the semi conductor:

1.Silver

2.Gold

3.Germanium

4.Iron

Question 10 of 20

Question 11 of 20

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

1.Both of its inputs are 0

2.Any of its inputs is 1

3.Both of its inputs are 1

4.Any of its inputs is 0

Question 11 of 20

Question 12 of 20

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

1.Anyone of the two

2.Both of its inputs are 1

3.Both of its inputs are 0

4.Any one of the two inputs is 0

Question 12 of 20

Question 13 of 20

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

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

2.They are not good conductors in their purest form

3.Hexavalent impurity is usually added in them

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

Question 13 of 20

Question 14 of 20

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

1.Thermionic emission

2.Boiling

3.Evaporation

4.Conduction

Question 14 of 20

Question 15 of 20

15. AND gate can be formed by using two:

1.NAND gates

2.NOR gates

3.OR gates

4.NOT gates

Question 15 of 20

Question 16 of 20

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

1.A and B are 1

2.A is 1 and B is 0

3.A is 0 and B is 1

4.A or B is 0

Question 16 of 20

Question 17 of 20

17. Which of the following is an insulator?

1.Silicon

2.Copper

3.Aluminium

4.Plastic

Question 17 of 20

Question 18 of 20

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

1.A is 0 and B is 1

2.Both A and B are 0

3.Both A and B are 1

4.A is 1 and B is 0

Question 18 of 20

Question 19 of 20

19. Which statement is not true:

1.Temperature is an analogue quantity

2.Amplifier is an analogue circuit

3.Amplifier is not an analogue circuit

4.Microphone converts sound into electric potential

Question 19 of 20

Question 20 of 20

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

1.Scalar quantities

2.Light quantities

3.Vector quantities

4.Analogue quantities

Question 20 of 20

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