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