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

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Question 1 of 20

Physics

1. 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 1 of 20

Question 2 of 20

2. 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 2 of 20

Question 3 of 20

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

1.Both A and B are 1

2.A is 0 and B is 1

3.A is 1 and B is 0

4.Both A and B are 0

Question 3 of 20

Question 4 of 20

4. AND gate can be formed by using two:

1.NAND gates

2.NOR gates

3.NOT gates

4.OR gates

Question 4 of 20

Question 5 of 20

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

1.Any of its inputs is 1

2.Both of its inputs are 1

3.Any of its inputs is 0

4.Both of its inputs are 0

Question 5 of 20

Question 6 of 20

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

1.Both of its inputs are 0

2.Anyone of the two

3.Any one of the two inputs is 0

4.Both of its inputs are 1

Question 6 of 20

Question 7 of 20

7. Which statement is not true:

1.Temperature is an analogue quantity

2.Amplifier is not an analogue circuit

3.Microphone converts sound into electric potential

4.Amplifier is an analogue circuit

Question 7 of 20

Question 8 of 20

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

1.18

2.2

3.32

4.8

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. 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 10 of 20

Question 11 of 20

11. The logical operation performed by this gate is:

1.NAND

2.AND

3.NOR

4.OR

Question 11 of 20

Question 12 of 20

12. 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 is the member of 6th group of periodic table

4.Germanium forms covalent bond by sharing four electrons

Question 12 of 20

Question 13 of 20

13. Which of the following is an insulator?

1.Plastic

2.Silicon

3.Aluminium

4.Copper

Question 13 of 20

Question 14 of 20

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

1.Vector quantities

2.Analogue quantities

3.Scalar quantities

4.Light quantities

Question 14 of 20

Question 15 of 20

15. 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 15 of 20

Question 16 of 20

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

1.Positron

2.Protons

3.Free electors

4.Holes

Question 16 of 20

Question 17 of 20

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

1.A = 1, B = 1

2.A = 0, B = 0

3.A = 1, B = 0

4.A = 0, B = 0

Question 17 of 20

Question 18 of 20

18. Which is the semi conductor:

1.Iron

2.Silver

3.Germanium

4.Gold

Question 18 of 20

Question 19 of 20

19. 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.Mechanics

2.Electricity

3.Electronics

4.Metaphysics

Question 19 of 20

Question 20 of 20

20. 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 of such practical use is this state.

4.They are not good conductors in their purest form

Question 20 of 20

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