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Electrical Appliances 2010 Question Paper For CBSE Class XII Exams

  1. (a) Explain the construction and working of a shaded pole motor. (6 Marks)
  2. OR

    Explain the procedure of components testing of a universal motor.(6 Marks)

    (b) Give the constructional details of the motor used in a ceiling fan. How will you reverse the direction of rotation of a ceiling fan? (4 Marks)

  3. (a) Explain the construction and working principle of a mixer. Give its few uses. (5 Marks)
  4. (b) Describe in brief the working of a manual Voltage Stabiliser with its circuit diagram. (5 Marks)

  5. (a) Explain the procedure of overhauling a washing machine. (4 Marks)
  6. (b) Explain the installation procedure of a desert cooler. Why is ear thing of a desert cooler required?(4 Marks)

    OR

    Describe in detail the procedure involved in the testing of a defective desert cooler.(4 Marks)

  7. (a) Describe in detail the procedure involved in the repair of a blower type room Heater.(3 Marks)
  8. OR

    Give the constructional details of a bowl type room heater. (3 Marks)

    (b) Explain the common faults in a hair dryer. How will you rectify them? (3 Marks)

  9. (a) Explain the construction and working principle of a vacuum cleaner. (3 Marks)

    (b) Describe the common faults in an electric hand drill. How will you rectify Them? (3 Marks)

Electrical Appliances 2010 Question Papers Class XII

CBSE 2010 Question Papers Class XII