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