HomeElectronics Multiple choice question MCQ online testImportant Question- Answers of Semiconductor Physics Important Question- Answers of Semiconductor Physics Leave a Comment / Electronics Multiple choice question MCQ online test Spread the loveMCQ on Semiconductor physics 0% 0 votes, 0 avg Created on September 15, 2022Basic electronics Semiconductor diode/Semiconductor physics 1 / 33 Category: Semiconductor Physics 1. Energy gap of a non-conductor is none of these Complete overlapped Very large and vacant very small and vacant 2 / 33 Category: DC power supply 2. The output obtained by the rectifier is Non-pulsating AC Pulsating AC None Pulsating DC Hint (formula 0.45xVrms=0.45x 24= 10.8) 3 / 33 Category: DC power supply 3. A half-wave rectifier is connected with input of 24V 50hz AC, What is Output DC voltage? 10.8v 12v 9.9v 5.4v Hint Hint(Indium, Boron, and Gallium have 3) Arsenic Bismuth and phosphorus have 5) 4 / 33 Category: Semiconductor Physics 4. Which of the following is Impurity material of valency 3 Phosphorus Boron Bismuth Arsenic Hint ( For Ge energy band gap is 0.72eV) 5 / 33 Category: Semiconductor Physics 5. The energy band gap in silicon is..... 0.3eV 0.72eV 1.12eV 1.72eV 6 / 33 Category: DC power supply 6. allows DC but it blocks AC Inductor Insulator Conductor None 7 / 33 Category: Semiconductor Physics 7. Resistance in a diode in Forward bias is Very high Zero Low High 8 / 33 Category: Semiconductor Physics 8. How many junctions is in a diode 3 2 both 9 / 33 Category: Semiconductor diode (PN junction) 9. Output frequency of a full wave rectifier is 50 Hz, What is input frequency 50hz 200hz 25hz 100hz 10 / 33 Category: Semiconductor Physics 10. What is the breakdown voltage of LED? 1.7V- 3.0V 0.1V-0.3V 10.2V- 20.5V 5.0V- 7.5V 11 / 33 Category: Semiconductor diode (PN junction) 11. What is the work of a Zener Diode ? constant current, Varied voltage Varied current, Constant voltage Constant current, constant voltage Varied current, Varied Voltage 12 / 33 Category: DC power supply 12. Input frequency of a 3-phase half wave rectifier is 50hz, then output frequency is 25hz 150hz 300hz 50hz 13 / 33 Category: Semiconductor Physics 13. Valance electron in a semiconductor 8 2 4 6 14 / 33 Category: Semiconductor Physics 14. Most commonly used Rectifier is Half wave rectifier Full wave bridge rectifier Center-tap full wave rectifier 15 / 33 Category: Semiconductor Physics 15. Which of the following is not an active component DIODE SCR RESISTOR TRANSISTOR 16 / 33 Category: Semiconductor Physics 16. A semiconductor has ……….Temperature Coefficient of resistance Negative Zero None Positive Negative Coefficient Means When increasing the temperature then the resistance will decrease 17 / 33 Category: Semiconductor diode (PN junction) 17. Which type of diode is work as a Variable Capacitor? Photo diode LED Varactor Diode Tunnel Diode 18 / 33 Category: Semiconductor Physics 18. How many diodes in the Center-tap Full wave rectifier 4 2 1 6 19 / 33 Category: Semiconductor Physics 19. Which is impurity for an N-type material Boron Antimony Silicon Gallium 20 / 33 Category: Semiconductor Physics 20. When a Pentavalent impurity is added to a pure semiconductor, it becomes An intrinsic semiconductor An insulator N-type semiconductor P-type semiconductor 21 / 33 Category: Semiconductor Physics 21. Which type of charge on P-type material Positive None of these Negative Neutral 22 / 33 Category: Semiconductor Physics 22. As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor Increases None of the above Remains the same Decreases 23 / 33 Category: Semiconductor Physics 23. A semiconductor is formed by……….. Bonds Electrovalent Ionic Covalent Co-ordinate 24 / 33 Category: Semiconductor Physics 24. The conductivity of a semiconductor ………..by adding impurity None Both Increase Decrease 25 / 33 Category: Semiconductor Physics 25. Semiconductors in pure forms known as Extrinsic Intrinsic 26 / 33 Category: Semiconductor Physics 26. Majority carrier in N-type material Holes Electron Both A and B 27 / 33 Category: DC power supply 27. The AC component present in output voltage is called None Non-linear regulators Ripple Switching regulator 28 / 33 Category: Semiconductor Physics 28. Reverse Breakdown voltage that is Fixed already in the diode Avalanche breakdown A and B Zener breakdown 29 / 33 Category: Semiconductor Physics 29. The width of depletion layer in Reverse bias Increase Constant Decrease 30 / 33 Category: Semiconductor Physics 30. Which are responsible of Current flow in a semiconductor Holes and free electrons both Only free electron only holes 31 / 33 Category: Semiconductor diode (PN junction) 31. Ripple frequency of a half-wave rectifier is Equal to input 4 times of input Half of input Double of input 32 / 33 Category: Semiconductor Physics 32. How many valance electrons are in a Pentavalent impurity? 3 4 6 5 33 / 33 Category: Semiconductor Physics 33. Atomic no of Germanium 29 14 16 32 Your score isThe average score is 30% LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Also read Logic gates MCQ Quiz Zener Diode MCQ Quiz Concept of Logic Gates What is Impedance (Impedance vs Resistance) Spread the love
