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Chapter 13: Problem 12

Name some devices in which electric motors are used.

Short Answer

Expert verified
Washing machines, fans, and electric cars are among devices that use electric motors.

Step by step solution

01

Identify Common Household Devices

Look around your home and observe which appliances or tools might use electric motors. Common examples might include a washing machine, a dishwasher, or a vacuum cleaner.
02

Consider Personal Gadgets

Think about the electronic devices you use daily such as your fan, hairdryer, and electric toothbrush. These devices also utilize electric motors.
03

Think About Transport and Recreation

Explore the idea of vehicles and recreational devices. For example, electric cars, electric scooters, and even remote-controlled toys depend on electric motors.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Electric Motors in Household Appliances
Electric motors are crucial components in many household appliances. These motors convert electrical energy into mechanical energy, driving various functions in your home.
Let's take a look at some common examples:
  • Washing Machines: They use electric motors to spin and agitate the clothes during washing cycles.
  • Dishwashers: Motors power the water pump and spray arms to ensure dishes are thoroughly cleaned.
  • Vacuum Cleaners: The motor creates suction that helps to pick up dirt and debris from floors and carpets.
  • Refrigerators: Motors drive compressors which keep your fridge and freezer compartments cold.
These motors make our daily chores easier and more efficient. Without them, many modern conveniences would not exist.
Electric Motors in Personal Gadgets
Your personal gadgets also heavily rely on electric motors. These devices make our lives more comfortable and convenient.
Here are several examples:
  • Fans: Electric motors spin the blades, providing cool air during warm weather.
  • Hairdryers: Motors power the fan inside, blowing heated air to dry your hair quickly.
  • Electric Toothbrushes: Small motors create vibrations or rotations for effective brushing.
  • Laptops and Computers: Cooling fans with electric motors prevent overheating by circulating air inside the device.
Each of these gadgets leverages the power of electric motors to perform specific tasks. They enhance our everyday lives, offering convenience and efficiency at our fingertips.
Electric Motors in Electric Vehicles
Electric motors are revolutionizing transportation, providing a cleaner and more efficient alternative to combustion engines. Let's explore some key examples:
  • Electric Cars: These vehicles use powerful electric motors to drive the wheels, offering smooth and quiet rides while reducing pollution.
  • Electric Scooters: Compact and convenient for short commutes, these scooters rely on electric motors to power their movement.
  • Electric Bicycles (e-bikes): E-bikes are equipped with motors to assist with pedaling, making cycling less strenuous and more accessible to a broader audience.
  • Electric Boats: Motors in electric boats provide silent and clean propulsion, perfect for environmentally conscious boating enthusiasts.
Electric motors play a pivotal role in sustainable transportation. They not only reduce our carbon footprint but also offer new levels of performance and efficiency.

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Most popular questions from this chapter

The device used for producing electric current is called a (a) generator. (b) galvanometer. (c) ammeter. (d) motor.

The essential difference between an AC generator and a DC generator is that (a) AC generator has an electromagnet while a DC generator has permanent magnet. (b) DC generator will generate a higher voltage. (c) AC generator will generate a higher voltage. (d) AC generator has slip rings while the DC generator has a commutator.

Two circular coils A and B are placed closed to each other. If the current in the coil A is changed, will some current be induced in the coil B? Give reason.

At the time of short circuit, the current in the circuit (a) reduces substantially. (b) does not change. (c) increases heavily. (d) vary continuously.

What is the function of an earth wire? Why is it necessary to earth metallic appliances?
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