ELECTRICIAN 1st YEAR MODULE – Domestic appliances July 2, 2025June 30, 2025 by admin TRANSLATE THIS QUIZ IN YOUR LANGUAGE इस प्रश्नोत्तरी का अपनी भाषा में अनुवाद करें <<1234567891011121314151617>> 0% Question 1 of 17 1. Which AC single-phase motor is used in food mixers? Shaded pole motor Universal motor Repulsion motor Split phase motorQuestion 1 of 17Question 2 of 17 2. What is the purpose of the sole plate in an electric kettle? Acts as a balancing weight Protects the kettle base from damage Keeps the element in close contact with container Acts as an insulator for the elementQuestion 2 of 17Question 3 of 17 3. What is the magnetron tube filament voltage used in microwave ovens? 3.0 V AC 3.2 V AC 2.0 V AC 1.5 V ACQuestion 3 of 17Question 4 of 17 4. Which position gives maximum output from a heater? Position 3 Position 2 Position 4 Position 1Question 4 of 17Question 5 of 17 5. What is the function of the magnetron tube in a microwave oven? Oscillates to produce cooking frequency Amplifies microwave signal Changes polarity every half cycle Converts microwave to electrical energyQuestion 5 of 17Question 6 of 17 6. What is the function of the stirrer motor in a microwave oven? Revolves and reflects electromagnetic energy Spreads heat uniformly Draws cooling air inside Exhausts hot air outsideQuestion 6 of 17Question 7 of 17 7. What is the purpose of the U-bend marked 'X' in a geyser? Reduces outlet pipe pressure Prevents air locking in tank Avoids scale formation Prevents draining of waterQuestion 7 of 17Question 8 of 17 8. What is the fault if a food mixer runs intermittently? Defective commutator Armature coil open Worn out brushes Field winding partially shortQuestion 8 of 17Question 9 of 17 9. Which motor type is used in wet grinders? Universal motor Capacitor start induction run motor Capacitor start capacitor run motor Repulsion motorQuestion 9 of 17Question 10 of 17 10. What is this circuit called? Electronic triggering circuit of SCR Electronic fan regulator Electronic voltage stabilizer Electronic voltage multiplierQuestion 10 of 17Question 11 of 17 11. What is the purpose of protection grooves in a heater base plate? Retain heating element firmly Place vessels firmly Protect element from damage Radiate heat properlyQuestion 11 of 17Question 12 of 17 12. What is the defect in a single-phase pump motor if it runs at slow speed? Open starting winding Defective capacitor Short in starting winding Short in running windingQuestion 12 of 17Question 13 of 17 13. What is the function of the neutral path in AC supply systems for appliances? Maintains load current constant Reduces voltage drop in wiring Maintains voltage level constant Provides current return pathQuestion 13 of 17Question 14 of 17 14. What is the name of this part of an electric iron? Pressure plate Sole plate Mica insulation Asbestos sheetQuestion 14 of 17Question 15 of 17 15. Which material is used to make heating elements? Copper Aluminium Silver NichromeQuestion 15 of 17Question 16 of 17 16. Calculate heat generated by a 1000W, 240V heater working for 5 minutes: 72.1 kcal 70.5 kcal 71.6 kcal 71.0 kcalQuestion 16 of 17Question 17 of 17 17. Which formula calculates heat generated according to Joule's law? Heat = (IR)²T/J cal Heat = IRT/J cal Heat = I²RT/J cal Heat = IR²T/J calQuestion 17 of 17 Loading...
