MBOSE Class 11 Question Paper 2022 for Electronics & Hardware

Total No. of Printed Pages – 4 (2) HS/XI/A.Sc.Com/EH/22 (c) Which of the following is a two terminal semi 2022 conductor device ELECTRONICS & HARDWARE (i) Diode ( Theory ) (ii) Triode Full Marks : 30 (iii) Transistor Time : 1 hour (iv) I.C. The figures in the margins indicate full marks for the questions General Instructions: (d) What is the specification of G.I. earth plate (i) Write all the answers in the answer script. (i) 60 cm  60 cm  3 mm (ii) Attempt all parts of a question together at one place. (ii) 60 cm  60 cm  6 mm (iii) 60 cm  60 cm  4 mm 1. Choose the correct answer: 1 4 = 4 (a) The unit of electrical power is (iv) 60 cm  60 cm  5 mm (i) Volt (ii) Watt 2. Fill in the blanks : 1 4 = 4 (iii) Joule (iv) Ampere (a) Device that stores energy in the form of magnetic field are called (b) What are the basic building blocks that all matter (b) Earth or ground wire is made of is composed of (i) Electron, Neutron & Proton (c) A component used to close or break a circuit is (ii) Electron, Proton & ions (iii) Neutron, Proton & ions (d) In resistor the current is not directly (iv) Electron, Neutron & charged ions proportional to the applied voltage. HS/XI/A.Sc.Com/EH/22 HS/XI/A.Sc.Com/EH/22

(3) (4) 3. Answer in 1 word or 1 sentence each (Any four ): 1  4 = 4 5. Answer the following essay-type question (Any three): 4  3 = 12 (a) What is electric current? (a) Explain the steps of generation of electricity by thermal power plant with basic block diagram. (b) How are AC and DC current different from each other? (b) State Kirchoff’s voltage law. Calculate the energy use of a ceiling fan, if a celing fan of 200 watt is (c) What will happen to a series circuit if a bulb gets used for four hours/day. For 120 days a year, fused? Will the circuit be closed in this case? what will be the annual energy consumption? (d) What is the amount of charcoal and salt needed (c) What is earthing? Why earthing is required? for G.I. pipe earthing? Draw pipe earthing. (d) What are the general guidelines that a wireman (e) A color code of resistor, Brown, Brown, Red and need to follow at the workplace? Gold is for which ohmic value?  4. Answer the following questions in 3 or 4 sentences (Any three): 2 3 = 6 (a) What are active and passive components? (b) What are Extrinsic and Intrinsic semiconductors? (c) What is lightning arrester? (d) A lamp is plugged into a power socket which provides 110V. An ammeter attached to the lamp shows 2A flowing through the circuit. How much resistance is the lamp providing? (e) Write short notes on Transistor and Capacitor. HS/XI/A.Sc.Com/EH/22 HS/XI/A.Sc.Com/EH/22