List five applications of electric motors in thecommon household.
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Five applications of electric motors in the common household.
Explanation of Solution
An electric motor is a machine that converts electrical energy into mechanical energy. The electric motor has a rotating part, which rotates due to the interaction between the magnetic field and the electric current in the motor. Depending on the type of power source are mainly two types of electric motors, AC motors and DC motors.
The type of electric motors used depends upon the application for which they have been employed. The type of motor can be single-phase ac motor, three-phase ac motor, or a dc motor. The electric motors have a wide range of applications like industrial, commercial, and household applications.
The first household application of an electric motor is an electric fan. The electric motor employed in fan is single phase ac motor and consumes very less power, therefore, also called fractional kilowatt motor.
The second household application of electric motor is in the washing machine, which generally employs a universal motor that can operate both AC and DC power.
The third household application of the electric motor is in the air conditioner, which employs ac motor that operates at
The fourth household application of the electric motor is in hairdryers, which employ a permanent magnet DC motor, which runs at a very high speed of
The fifth household application of the electric motor is in the refrigerator in which they are used to compress the coolant, as the most common type of motor used in HVAC applications is AC motor only.
Therefore, the five main applications of the electric motors in the household are electric fans, washing machines, air conditioners, hairdryers, and refrigerators.
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Chapter 1 Solutions
Principles and Applications of Electrical Engineering
- A series motor runs at 700 rev/min when the voltage is 300 V and the current is 20 A. The armature resistance is 0.3 2 and the series field resistance is 0.1 2. Determine the resistance to be connected in series to reduce the speed to 500 rev/min with the same currentarrow_forwardA series motor runs at 800 rev/min when the voltage is 400V and the current is 25A. The armature resistance is 0.4 ohm and the series field resistance is 0.2 ohm. Determine the resistance to be connected in series to reduce the speed to 600 rev/min with the same current.arrow_forward1. When running at its operating speed, a 215-V dc motor with an armature whose resistance is 1.70 2 draws a current of 22.0 A. What is the back emf of the motor when it is operating normally?arrow_forward
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- 3. Would a universal motor operate better or worse on a 25 Hz power source compared to a 60 Hz power source? Explain.arrow_forward459. The current drawn by a 460 V dc motor of armature resistance 0.5 ohm and back emf 420 V is -arrow_forwardA separately excited motor develops 700N.m torque while drawing 35 amperes armature current. what is the motor speed in rpm if the armature voltage is 200 volts?arrow_forward
- Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning