NBSE Class 11 Question Paper 2022 Electronics and Hardware

Total number of printed pages : 2 NB-XI/E&H(V)/1 2022 Electronics & Hardware (Vocational) Total marks : 50 Time : 2 hours General instructions : i) Approximately 15 minutes is allotted to read the question paper and revise the answers. ii) All questions are compulsory except Q. nos.18 to 23 where general option is given. iii) The question paper consists of 23 questions. iv) Marks allocated to every question are indicated against it. N.B: Check to ensure that all pages of the question paper are complete as indicated on the top left side. 1. Choose the correct answer from the given alternatives: 10x1=10 i. Which of the following is used to close or break the circuit? (a) bulb (b) switch (c) wire (d) electric bell ii. Which of the following is a two terminal semiconductor device? (a) diode (b) triode (c) translator (d) integrated circuit iii. In a four band resistor, the fourth represents the (a) digit (b) multimeter (c) tolertance (d) colour code iv. Which of the following is associated with skill development at scale with speed and standard? (a) National Solar Mission (b) Green India Mission (c) Swachh Bharat Abhiyan (d) National Policy on Skill Development and Entrepreneurship v. Which of the following cable uses light for transmission? (a) coxial cable (b) optics fiber cable (c) PVC cable (d) XLPE cable vi. ESD stands for (a) electrostated display (b) electrostatic display (c) electrostatic discharge (d) electrostated discharge vii. Which of the following is used as wire conductor? (a) lug (b) screw driver (c) stripper (d) hammer viii. What does an upright body posture convey or show? (a) shyness (b) fear (c) intelligence (d) confidence ix. Which of the following equipment have a discharge nozzle? (a) control panel (b) fire extinguisher (c) MCB (d) switch

-2- NB-XI/E&H(V)/1 x. In electromechanical assembly, PLC stands for (a) programmable lever control (b) programmable logic control (c) protected lever component (d) project logic cable Answer the following questions in one word or one sentence: 2. What is the unit of electrical current? 1 3. Draw the electrical symbol for variable resistor. 1 4. What is the average resistance of human body? 1 5. Mention any four factors which effect cable selection. 1 6. What is a team? 1 7. Write any two common word processing applications. 1 8. What is the use of a cap, usually made of metal that is used to shield cables from external damages and prevent the terminals from splitting? 1 9. What is crimping? 1 Answer the following questions in 20-50 words: 10. Who is an entrepreneur? Mention one type of business activity. 1+1=2 11. What is soldering? What is the purpose of soldering? 1+1=2 12. What is semi-conductor? Write the two types of semiconductor material. 1+1=2 13. Mention any two variables that affect the ground resistance of a ground system. 2 14. What is electrocution? Write any two harms an electric current can cause. 2 15. Write any two differences between PVC and XLPE power cables. 2 16. Name any two types of crimping tools and state the use of any one of them. 2 17. Write the two methods for manually reading and identifying the value of resistors. 2 Answer any four from the following questions in 60-100 words: 18. Explain the two types of electricity. 4 19. What is personal hygiene? Mention three importance of personal hygiene. 1+3=4 20. Mention any four precautions to be followed to avoid electrical hazards. 4 21. Explain the following: (i) a combination pliers (ii) wire stripper 2+2=4 22. What is electrostatic discharge? Mention any two causes of electrostatic discharge. 2+2=4 23. Name any two types of cable joints. Explain any one with the help of a diagram. 1+3=4 ***************************************