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

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Question 1 of 20

Physics

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

1.Both of its inputs are 1

2.Both of its inputs are 0

3.Anyone of the two

4.Any one of the two inputs is 0

Question 1 of 20

Question 2 of 20

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

1.Positron

2.Protons

3.Holes

4.Free electors

Question 2 of 20

Question 3 of 20

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

1.Electrons

2.Negative ions

3.Positive ions

4.Protons

Question 3 of 20

Question 4 of 20

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

1.32

2.18

3.8

4.2

Question 4 of 20

Question 5 of 20

5. Which of the following is an insulator?

1.Aluminium

2.Plastic

3.Copper

4.Silicon

Question 5 of 20

Question 6 of 20

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

4.Hexavalent impurity is usually added in them

Question 6 of 20

Question 7 of 20

7. AND gate can be formed by using two:

1.OR gates

2.NAND gates

3.NOT gates

4.NOR gates

Question 7 of 20

Question 8 of 20

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

1.Light quantities

2.Analogue quantities

3.Vector quantities

4.Scalar quantities

Question 8 of 20

Question 9 of 20

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

1.Both of its inputs are 0

2.Any of its inputs is 1

3.Any of its inputs is 0

4.Both of its inputs are 1

Question 9 of 20

Question 10 of 20

10. Which is not a true statement?

1.Germanium forms covalent bond by sharing four electrons

2.Germanium has four electrons is its valence shell

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

4.Germanium crystal acts as insulator in its purest form

Question 10 of 20

Question 11 of 20

11. 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 11 of 20

Question 12 of 20

12. Which is the semi conductor:

1.Germanium

2.Gold

3.Silver

4.Iron

Question 12 of 20

Question 13 of 20

13. The logical operation performed by this gate is:

1.AND

2.NOR

3.OR

4.NAND

Question 13 of 20

Question 14 of 20

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

1.A and B are 1

2.A is 0 and B is 1

3.A is 1 and B is 0

4.A or B is 0

Question 14 of 20

Question 15 of 20

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

1.A is 1 and B is 0

2.Both A and B are 0

3.Both A and B are 1

4.A is 0 and B is 1

Question 15 of 20

Question 16 of 20

16. Which statement is not true:

1.Amplifier is not an analogue circuit

2.Amplifier is an analogue circuit

3.Microphone converts sound into electric potential

4.Temperature is an analogue quantity

Question 16 of 20

Question 17 of 20

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

1.Both of its input are 0

2.One of its two inputs is zero

3.Any one of its two inputs is 1

4.Both of its inputs are 1

Question 17 of 20

Question 18 of 20

18. 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 18 of 20

Question 19 of 20

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

1.Conduction

2.Evaporation

3.Thermionic emission

4.Boiling

Question 19 of 20

Question 20 of 20

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

1.A = 1, B = 1

2.A = 0, B = 0

3.A = 0, B = 0

4.A = 1, B = 0

Question 20 of 20

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