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