1st PUC Electronics Question Bank Chapter 9 Practical Electronic Components, Their Specifications and PCB

Karnataka 1st PUC Electronics Question Bank Chapter 9 Practical Electronic Components, Their Specifications and PCB One Mark Questions and Answers Question 1. What is a part number? Answer: The part number is a unique code used to identify a particular component for the convenience of the consumer or manufacturer. Question 2. Mention the important specifications of a resistor. Answer: Value of resistance Power rating Tolerance Maximum working voltage (or voltage rating). Question 3. For what application, fusible resistors are used? Answer: The fusible resistor is used as a fuse under faulty conditions to protect the circuit. Question 4. What is the important specification of a capacitor? Answer: Capacitance value and Maximum voltage rating. Question 5. Name the type of capacitor having polarity. Answer: Electrolytic capacitor. Question 6. Write a part number for a diode. Answer: DB 152. Question 7. How many pins are present in a diode bridge? Answer: Four. Question 8. Mention any one type of a seven-segment display. Answer: Common anode seven segment display. Question 9. What do we mean by 16 × 2 LCD? Answer: 16 × 2 LCD means a two-line 16 characteristics LCD display. Question 10. Mention one specification of a speaker. Answer: Impedance. Question…

1st PUC Electronics Question Bank Chapter 8 Introduction to Digital Electronics

Karnataka 1st PUC Electronics Question Bank Chapter 8 Introduction to Digital Electronics One Mark Questions and Answers Question 1. What is a digital signal? Answer: A Digital signal is a signal which can have only two distinct values. Question 2. What is a bit? Answer: The bit is a binary digit that can be either 0 or 1. Question 3. What is a nibble? Answer: A nibble is a group of four bits. Question 4. What is a byte? Answer: A byte is a group of eight bits. Question 5. What is meant by the base or radix of a number system? Answer: The base or radix of a number system is the number of distinct symbols used in the number system. Question 6. How many basic symbols are used in (i) binary (ii) hexadecimal (iii) decimal number systems? Answer: Two Sixteen Ten. Question 7. Write l‘s complement of binary number 11001. Answer: 00110. Question 8. What is 2’s complement of a binary number 11001? Answer: Question 9. What is a logic gate? Answer: A logic gate is a digital circuit that makes logical decisions. Question 10. What type of gate is obtained when two switches are (i) in parallel…

1st PUC Electronics Question Bank Chapter 7 Bipolar Junction Transistor

Karnataka 1st PUC Electronics Question Bank Chapter 7 Bipolar Junction Transistor One Mark Questions and Answers Question 1. What is a transistor? Answer: The transistor is a three-terminal semiconductor device with two p-n junctions which can amplify weak electrical signals and it can also be used as a switch. Question 2. Write one important application of a transistor. Answer: Amplification of weak ac signal. Question 3. What is an npn transistor? Answer: npn transistor is a semiconductor device that has a layer of p type material sandwiched between two layers of n-type materials. Question 4. Draw the symbols of (i) npn transistor and (ii) pnp transistor Answer: (i) npn transistor (ii) pnp transistor Question 5. Why is a transistor called a transfer resistor device? Answer: A transistor is called a transfer resistor device because it transfers charge carriers from a low resistance region to a high resistance region. Question 6. How many p-n junctions a transistor has? Answer: Two Question 7. What is an unbiased transistor? Answer: A transistor without an external voltage (or biasing) applied is called an unbiased transistor. Question 8. What is a biased transistor? Answer: A transistor with an external voltage applied is called a biased…

1st PUC Electronics Question Bank Chapter 6 Semi-Conductors, Diodes and Applications of Diodes

Karnataka 1st PUC Electronics Question Bank Chapter 6 Semi-Conductors, Diodes and Applications of Diodes One Mark Questions and Answers Question 1. What are semiconductors? Answer: Semiconductors are substances whose electrical conductivity lies between that conductors and insulators. Question 2. What are conductors? Answer: Conductors are those substances that allow electric charges to flow through them easily. Question 3. Define valence band. Answer: The valence band is the range of energies possessed by valence electrons. Question 4. Define conduction band. Answer: The range of energies occupied by free electrons is called the conduction band. Question 5. What is the forbidden energy gap? Answer: The gap between the conduction band and valence band in the energy band diagram is known as the forbidden energy gap. Question 6. What is doping? Answer: The process of adding suitable impurity to a semiconductor to increase its conductivity is called doping. Question 7. Name any one donor impurity. Answer: Arsenic. Question 8. Name anyone acceptor impurity. Answer: Gallium. Question 9. Name majority charge carriers in the n-type semiconductor. Answer: Electrons. Question 10. Name majority charge carriers in a p-type semiconductor. Answer: Holes. Question 11. Draw the symbol of the p-n junction diode. Answer: Question 12. How…

1st PUC Electronics Question Bank Chapter 5 Application of DC and AC to Passive Components

Karnataka 1st PUC Electronics Question Bank Chapter 5 Application of DC and AC to Passive Components One Mark Questions and Answers Question 1. What is a transient period? Answer: The transient period is the time period during which current and voltage changes before a steady state is reached when dc is applied to RC and RL circuit. Question 2. What is the transient phenomenon? Answer: The transient phenomenon is the voltage and current response with respect to time. Question 3. Define the time constant of an RC circuit. Answer: The time constant of the RC circuit is the time taken by the capacitor to charge to 63.2% of the supply voltage. Question 4. Write the expressions for the (1) Voltage across capacitor during charging and (2) voltage across capacitor during discharging. Answer: During charging, Vc =E(1 – e-1/RC) During discharging, Vc = Ee-1/RC Question 5. Define the time constant of the RL circuit. Answer: The time constant of the RL circuit is the time taken by the current to grow to 63.2% of the maximum value. Question 6. Define the phase difference between two AC quantities. Answer: Two ac quantities are said to have a phase difference if they do…

1st PUC Biology Question Bank Chapter 17 Breathing and Exchange of Gases

Karnataka 1st PUC Biology Question Bank Chapter 17 Breathing and Exchange of Gases 1st PUC Biology Breathing and Exchange of Gases One Marks Questions and Answers Question 1. What are the protective coverings of lung called? Answer: Parietal pleura and visceral pleura. Question 2. How is food prevented from entering the trachea? Answer: Epiglottis, a flap like structure, prevents the entering of food into trachea by closing the food pipe (Oesophagus). Question 3. What type of muscle is found in diaphragm? Answer: Skeletal muscle. Question 4. What is meant by pulmonary ventilation? Answer: It is the process of breathing of oxygen – rich air into the lungs and expelling of carbondioxide rich air from the lungs. Question 5. What is bronchitis? Answer: It is the inflammation of bronchi, leading to breathlessness, chest tightness, light sneezing, and cough with the explusion of yellow or green sputum. Question 6. What is asthma? Answer: It is the parietal blocking of bronchi and bronchioles, resulting in breathlessness, chest tightness, wheezing and dry cough. Question 7. What is emphysema? Answer: Emphysema is the condition, where the walls of the alveoli lose their elasticity and remain rigid due to a permanent air filled condition. Question 8. What…

1st PUC Electronics Question Bank Chapter 4 Passive Electronic Components

Karnataka 1st PUC Electronics Question Bank Chapter 4 Passive Electronic Components One Mark Questions and Answers Question 1. What is an active component? Answer: An active component is a component that supplies energy to a circuit. Question 2. What is a passive component? Answer: A passive component is a component that dissipates energy and does not supply energy to a circuit. Question 3. Give any one example for the active component. Answer: Transistor. Question 4. Give any one example for the passive component. Answer: Capacitor. Question 5. What does the power rating of a resistor indicate? Answer: Power rating indicates the maximum power a resistor can withstand safely. Question 6. What is meant by tolerance of a resistor? , Answer: Tolerance is the percentage variation in the resistance value from the value specified by the colour code. Question 7. Define the temperature coefficient of resistance of a material. Answer: Temperature coefficient of resistance is defined as the ratio of increase in resistance per °C rise in temperature to its resistance at 0°C Question 8. Define resistivity or specific resistance of a material. Answer: The resistivity of the material is defined as the resistance of a conductor of unit length having…

1st PUC Electronics Question Bank Chapter 3 Measuring Instruments

Karnataka 1st PUC Electronics Question Bank Chapter 3 Measuring Instruments One Mark Questions and Answers Question 1. What is meant by measurement? Answer: Measurement is the process of comparing a given quantity with a standard unit. Question 2. What is an ammeter? Answer: Ammeter is an instrument used for measuring the current flowing in a circuit. Question 3. What is a voltmeter? Answer: A voltmeter is a device used to measure voltage between two points. Question 4. What is the ohmmeter? Answer: An ohmmeter is a device used to measure resistance. Question 5. Write the symbol of Ohmmeter Answer: Question 6. What is a multimeter? Answer: A multimeter is a multipurpose electronic instrument that can measure resistance, DC or AC voltage, current, and resistance. Question 7. What is an oscilloscope? Answer: An oscilloscope is an instrument used to display, measure and analyze parameters of an electrical signal. Question 8. Expand ECG Answer: ECG = Electrocardiogram. Question 9. Mention any one application of ECG. Answer: ECG is a diagnostic tool that is used to assess the electrical function of the heart. Question 10. Which is BP measuring instrument? Answer: Sphygmomanometer. Question 11. What is a glucometer? Answer: A glucometer is an…

1st PUC Electronics Question Bank Chapter 2 Principles of Electricity, Network Theorems and AC Principles

Karnataka 1st PUC Electronics Question Bank Chapter 2 Principles of Electricity, Network Theorems and AC Principles One Mark Questions and Answers Question 1. What is the unit of electric charge? Answer: coulomb (C). Question 2. What is the magnitude of the charge of an electron? Answer: 1.6 × 10-19 C Question 3. Define potential differences. The potential difference between any two points in a circuit is the amount of work done in moving unit positive charge from one point to another. Question 4. Define electric current. Electric current is defined as the rate of flow of charge through a cross-section of a conductor. Question 5. What is the unit of electric current? ampere (A). Question 6. What is the direction of conventional current? The direction of conventional current is opposite to the direction of the flow of electrons. Question 7. Define DC current. DC current is the current that flows only in one direction and its magnitude remains constant with time. Question 8. Define ampere. The current flowing in a conductor is said to be one ampere if one coulomb of charge flows through the conductor in one second. Question 9. Give an example for the DC source. A battery.…

1st PUC Electronics Question Bank Chapter 1 Introduction to Electronics

Karnataka 1st PUC Electronics Question Bank Chapter 1 Introduction to Electronics One Mark Questions and Answers Question 1. What are electronics Answer: Electronics is the field of science and engineering which deals with electronic devices and their utilisation. Question 2. Who discovered the electron? Answer: J.J. Thomson. Question 3. Who invented the vacuum tube diode? Answer: John Ambrose Fleming. Question 4. Who invented the vacuum tube triode? Answer: Lee de Forest. Question 5. Name the most commonly used semiconductor material in device fabrications. Answer: Silicon. Question 6. How many electrodes are present in a vacuum tube triode? Answer: Three electrodes. Question 7. Who invented the transistor? Answer: William Shockley, John Bardeen, and Walter Brattain. Question 8. Who invented the integrated circuit? Answer: Jack Kilby. Question 9. In which year Op amp was developed? Answer: 1964 Question 10. What is the internet? Answer: Internet is the largest and the most effective communication platform. Question 11. Who invented JFET? Answer: William Schooley. Question 12. Expand MOSFET. Answer: Metal Oxide Semiconductor Field Effect Transistor. Question 13. Expand RAM. Answer: Random Access Memory. Question 14. Expand PROM. Answer: Programmable Read-Only Memory. Question 15. Expand SCR. Answer: Silicon Controlled Rectifier. Question 16. Expand IGBT. Answer:…