Dual-Voltage Motors
Many motors are designed to be operated at either of two different voltages. For example, the three-phase motors of Figure …
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← Explore all topicsMany motors are designed to be operated at either of two different voltages. For example, the three-phase motors of Figure …
Single-phase motors become impractical in sizes much above 7.5 kW (10 hp) and, for larger power requirements, three-phase motors become…
A repulsion-start, induction-run motor is illustrated schematically in Figure 3.8. Unlike the previous induction motors, the repulsion-start motor does not…
A schematic diagram of a two-value-capacitor, induction-run motor (also called a capacitor-start, capacitor-run motor) is shown in Figure 3.7. The…
A capacitor-start, induction-run motor is illustrated in Figure 3.6a. An electrolytic capacitor has been inserted in series with the starting…
Split-phase induction motors The motor of Figure 3.5a is called a split-phase induction motor. A set of starting windings has…
The motor of Figure 3.3 is not a practical motor, but it illustrates the principles of operation of induction motors.…
Electric motors are devices that convert electric power into mechanical power. They are often chosen over engines for applications in…
Tillage operations following primary tillage which are performed to create proper soil tilth for seeding and planting are secondary tillage.…
Tillage It is a mechanical manipulation of soil to provide favourable condition for crop production. Soil tillage consists of breaking…
Seeding or sowing is an art of placing seeds in the soil to have good germination in the field. A…
Harvesting It is the operation of cutting, picking, plucking and digging or a combination of these operations for removing the…