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