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