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: DC power supply The output obtained by the rectifier is Non-pulsating AC Pulsating DC None Pulsating AC 2 / 33 Category: Semiconductor diode (PN junction) What is the work of a Zener Diode ? Varied current, Varied Voltage Varied current, Constant voltage Constant current, constant voltage constant current, Varied voltage 3 / 33 Category: Semiconductor Physics Semiconductors in pure forms known as Intrinsic Extrinsic 4 / 33 Category: Semiconductor Physics The conductivity of a semiconductor ………..by adding impurity Both Increase Decrease None 5 / 33 Category: Semiconductor Physics Which are responsible of Current flow in a semiconductor Holes and free electrons Only free electron only holes both 6 / 33 Category: Semiconductor Physics The width of depletion layer in Reverse bias Constant Decrease Increase Hint Hint (Indium, Boron, and Gallium have 3) Arsenic Bismuth and phosphorus have 5) 7 / 33 Category: Semiconductor Physics Which of the following is Impurity material of valency 3 Bismuth Arsenic Boron Phosphorus 8 / 33 Category: Semiconductor Physics As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor Increases Decreases None of the above Remains the same 9 / 33 Category: Semiconductor diode (PN junction) Output frequency of a full wave rectifier is 50 Hz, What is input frequency 100hz 25hz 200hz 50hz 10 / 33 Category: Semiconductor Physics Atomic no of Germanium 16 32 29 14 11 / 33 Category: Semiconductor diode (PN junction) Ripple frequency of a half-wave rectifier is Double of input 4 times of input Half of input Equal to input 12 / 33 Category: Semiconductor Physics How many junctions is in a diode both 2 3 13 / 33 Category: Semiconductor Physics A semiconductor is formed by……….. Bonds Co-ordinate Ionic Electrovalent Covalent Hint ( For Ge energy band gap is 0.72eV) 14 / 33 Category: Semiconductor Physics The energy band gap in silicon is..... 1.12eV 0.72eV 0.3eV 1.72eV 15 / 33 Category: Semiconductor Physics How many diodes in the Center-tap Full wave rectifier 6 1 4 2 16 / 33 Category: DC power supply Input frequency of a 3-phase half wave rectifier is 50hz, then output frequency is 150hz 300hz 50hz 25hz Hint (formula 0.45xVrms=0.45x 24= 10.8) 17 / 33 Category: DC power supply A half-wave rectifier is connected with input of 24V 50hz AC, What is Output DC voltage? 10.8v 12v 9.9v 5.4v 18 / 33 Category: Semiconductor Physics Energy gap of a non-conductor is Complete overlapped very small and vacant none of these Very large and vacant 19 / 33 Category: Semiconductor Physics Most commonly used Rectifier is Half wave rectifier Center-tap full wave rectifier Full wave bridge rectifier 20 / 33 Category: Semiconductor Physics Majority carrier in N-type material Both A and B Electron Holes 21 / 33 Category: DC power supply The AC component present in output voltage is called Ripple None Non-linear regulators Switching regulator 22 / 33 Category: Semiconductor Physics Reverse Breakdown voltage that is Fixed already in the diode A and B Zener breakdown Avalanche breakdown 23 / 33 Category: Semiconductor Physics Valance electron in a semiconductor 4 8 2 6 24 / 33 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? Varactor Diode Tunnel Diode LED Photo diode 25 / 33 Category: Semiconductor Physics Resistance in a diode in Forward bias is Zero High Very high Low 26 / 33 Category: Semiconductor Physics Which is impurity for an N-type material Boron Gallium Antimony Silicon 27 / 33 Category: Semiconductor Physics What is the breakdown voltage of LED? 10.2V- 20.5V 1.7V- 3.0V 0.1V-0.3V 5.0V- 7.5V 28 / 33 Category: Semiconductor Physics When a Pentavalent impurity is added to a pure semiconductor, it becomes N-type semiconductor An intrinsic semiconductor P-type semiconductor An insulator 29 / 33 Category: Semiconductor Physics Which of the following is not an active component RESISTOR SCR TRANSISTOR DIODE 30 / 33 Category: Semiconductor Physics How many valance electrons are in a Pentavalent impurity? 6 4 3 5 31 / 33 Category: DC power supply allows DC but it blocks AC None Conductor Insulator Inductor 32 / 33 Category: Semiconductor Physics A semiconductor has ……….Temperature Coefficient of resistance Zero Negative Positive None Negative Coefficient Means When increasing the temperature then the resistance will decrease 33 / 33 Category: Semiconductor Physics Which type of charge on P-type material None of these Negative Positive Neutral Your score isThe average score is 36% 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
