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