Physics Electronics Online Mcqs Test

Important Electronics Question and Answer

Total Questions: 177
Time Allowed: 60 Minutes
Total Marks: 177
How to Attempt Test: Please choose the right Option in MCQ-type question.
Test Helpful For: Physics Test
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Physics Interview Question Answer

Physics Electronics Practice Test Online With Explanation

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1. Symbol represents

Physics 17.05 1

2. When aluminum is added as an impurity to silicon, then resulting material is

3. Arsenic, antimony or phosphorus are impurities of

4. A photodiode can turn its current ON and OFF in

5. Output voltage in full wave rectification is not smooth. In order to have smooth output voltage

6. The materials in which valence band and conduction band overlap are called

7. Diode can work as

8. Reverse bias applied on a junction diode

9. An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a _

10. Due to the break down the p-n junction suffers

11. When Ge crystal is doped with phosphorus atom, then it becomes

12. If positive end of battery is connected to p-side and negative end of battery is connected to n-side of diode then

13. In common emitter amplifier (l₀/lE) = 0.98, then current gain is

14. A single transistor can be used to build which of the following digital logic gates?

15. The switch is open when the resistance between C and E becomes

16. In a junction diode, the holes are due to

17. Acceptor and donor impurities donate

18. When a semiconductor is continuously heated, then value of its resistance

19. A non-inverting closed-loop op-amp circuit generally has a gain factor:

20. The part of a transistor which is heavily doped to produce large number of majority carriers is

21. A transistor consists of

22. In n-type substances, the minority carriers are

23. The width of a depletion layer in a p-n junction is

24. Depletion region of a junction is formed

25. In forward bias, the width of potential barrier in a p-n junction diode


 

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