SEBA class 10 Electronics and Hardware Chapter 3 Answer 2025 Assamese Medium (SCERT Assam board) | MIXER AND GEYSER REPAIR AND MΑΙΝΤΑΝΕNCE |

MIXER AND GEYSER REPAIR AND MΑΙΝΤΑΝΕNCE 

1. What is a mixer?

Answer: A mixer is a kitchen appliance used for mixing, grinding, and blending food items.
It typically consists of a motor, blades, and a jar.

2. What are the common parts of a mixer?
Answer:

• Motor: Provides the rotational force.
• Blades: Used for grinding and mixing.
• Jar: Holds the food items.
• Coupler: Connects the jar to the motor shaft.
• Speed control knob: Adjusts the speed of the motor.

3. What are the common problems in mixers?
Answer:

• Jar leakage: Due to worn-out rubber gaskets.
• Motor overheating: Caused by overloading.
• Blades not rotating: Due to faulty coupler or motor issues.
• No power supply: Caused by a damaged cord or faulty switch.

4. How do you repair a faulty mixer?
Answer:

• Check the power cord and fuse.
• Inspect and replace the coupler if worn out.
• Clean and lubricate the motor bearings.
• Replace damaged blades or gaskets.

5. What is a geyser?
Answer: A geyser is a water heating device used to supply hot water for domestic purposes.
It consists of a heating element, thermostat, and water tank.

6. What are the common parts of a geyser?
Answer:

• Heating element: Heats the water.
• Thermostat: Controls the water temperature.
• Water tank: Stores the hot water.
• Safety valve: Prevents excessive pressure build-up.
• Indicator light: Shows the working status of the geyser.

7. What are the common problems in geysers?
Answer:

• No hot water: Due to a faulty heating element.
• Water leakage: Caused by tank corrosion or loose connections.
• Temperature fluctuations: Due to a faulty thermostat.
• Electric shock risk: Due to improper earthing.

8. How do you repair a faulty geyser?
Answer:

• Check and replace the heating element if faulty.
• Inspect and replace the thermostat if malfunctioning.
• Fix water leaks by tightening connections or replacing the tank.
• Ensure proper earthing and insulation.

9. What safety precautions should be taken while repairing a mixer?
Answer:

• Disconnect the appliance from the power supply.
• Use insulated tools.
• Wear safety gloves to avoid electric shock.
• Avoid overloading the mixer.

10. What safety precautions should be taken while repairing a geyser?
Answer:

• Switch off the power supply before repairing.
• Wear rubber gloves and shoes.
• Check for proper earthing and insulation.
• Use a multimeter to test electrical components safely.

11. What is the role of the thermostat in a geyser?
Answer: The thermostat regulates the water temperature by switching the heating element on and off.

12. What is the function of the safety valve in a geyser?
Answer: The safety valve releases excess pressure to prevent the geyser from bursting.

13. What is the purpose of descaling a geyser?
Answer: Descaling removes the mineral deposits (lime scale) inside the tank, improving efficiency and preventing damage.

14. What is the role of the coupler in a mixer?
Answer: The coupler connects the jar to the motor shaft, allowing the blades to rotate.

15. What are the benefits of regular maintenance of mixers and geysers?
Answer:

• Increases the lifespan of the appliances.
• Improves performance and efficiency.
• Reduces the risk of electrical hazards.
• Prevents unexpected breakdowns.