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