CBSE Class 12 Marking Scheme 2022 for Electrical Technology

CBSE | DEPARTMENT OF SKILL EDUCATION ELECTRICAL TECHNOLOGY (SUBJECT CODE 819) CLASS XII (SESSION 2021-2022) MARKING SCHEME FOR TERM -1 Max. Time Allowed: 90 Minutes (1½ Hrs.) Max. Marks: 30 General Instructions: 1. Please read the instructions carefully 2. This Question Paper is divided into 03 sections, viz., Section A, Section B and Section C. 3. Section A is of 05 marks and has 06 questions on Employability Skills. 4. Section B is of 20 marks and has 25 questions on Subject Specific Skills. 5. Section C is of 05 marks and has 07 competency-based questions. 6. Do as per the instructions given in the respective sections. 7. Marks allotted are mentioned against each section/question. 8. All questions must be attempted in the correct order SECTION A Answer any 5 questions out of the given 6 questions on Employability Skills (1 x 5 = 5 marks) 1. Ans- (D) Superficial hearing. 1 2. Ans-( A) Chronological resume 1 3. Ans- (B) Antisocial 1 4. Ans- (D) Ambiversion 1 5. Ans- (A) Ctrl key+Shift key+down button key 1 6. Ans- (B) MIN Function 1 SECTION B Answer any 20 questions out of the given 25 questions (1 x 20 = 20 marks) 7. Ans- (B) Relative motion between the coil and magnet 1 8. Ans- (A) Faraday’s laws of induction 1 9. Ans- (D) Both A and C. 1 10. Ans- (A) Direct Current. 1 11. Ans- (C) Time taken to complete one cycle 1 12. Ans- (A) Impedance is minimum 1 819-MS-XII-Term 1(2021-2022) 1

13. Ans- (B) Electromagnetic Induction. 1 14. Ans- (A) Root mean square. 1 15. Ans- (B) Step down transformer 1 16. Ans- (C) Oil Forced Air Forced (OFAF) 1 17. Ans- (B) In secondary coil 1 18. Ans- (C) Auto transformer. 1 19. Ans- (C) Electro Motive Force 1 20. Ans- (A) Electrical to Mechanical 1 21. Ans- (D) 1 22. Ans- (C) To control the starting current up to safe value. 1 23. Ans- (C) Induction Motor 1 24. Ans- (B) Stator is stationary while the rotor is moving. 1 25. Ans- (C) Directly proportional. 1 26. Ans- (B) Couple forces. 1 27. Ans- (A) Mechanical to Electrical 1 28. Ans- (D) Shunt Motor 1 29. Ans- (D) Both A and B. 1 30. Ans- (D) Sine wave 1 31. Ans- (D) Both A and B. 1 SECTION C (COMPETENCY BASED QUESTIONS) Answer any 5 questions out of the given 7 questions (1 x 5 = 5 marks) 32. Ans- (B) Step Down transformer 1 33. Ans- (A) Faraday’s law 1 34. Ans- (C) 1 Volt 1 35. Ans- (A) 5 ohm 1 36. Ans- (C) Zero 1 37. Ans- (A) It will convert to step up transformer 1 38. Ans- (D) Primary coil 1 819-MS-XII-Term 1(2021-2022) 2