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You Can't Change the Speed.
Another Answer:That depends on the motor that is used in the furnace and whether it is belt drive or direct drive.Many direct drive fan motors have multiple winding connections, allowing you to change the fan speed by changing the connection to the windings. To do that, refer to the diagram on the cover plate on the side of the motor. If you are AT ALL confused by the diagram or if you haven't done something like that before, contact a heating professional or electrical contractor.
Many belt drive fan motors have pulleys with multiple "steps", allowing you to change the speed that way.
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What is governor function in the generator?
The governor controls the speed of the power source rotating the generator. This has to be continually adjusted to match the load on the generator. As more load is switched on, the generator becomes harder to turn, this would cause the generator to slow down, unless the power unit is adjusted to increase power and correct the speed.
How does an electric furnace work?
The operation of the furnace depends upon the thermostat, which is a simple unit that like a thermometer. which has set at a particular temperature. If this value falls below the set level on the thermostat, then the house starts to become colder, which alerts the electric furnace that is usually situated in the basement of a building. The heated coil in turn heats the temperature of the air around it. This air is then routinely blown into the house through a blower, the pressure that is exerted by the blower on the heated air warms it further. This air is blown into the house and the uncomfortably low temperature rises to a very pleasing level. The cold air that was initially present in the house replaces the hot air in the electric furnace
How does an ac drive variable speed drive operate to control speed?
Answer #1 It varies the frequency fed to a synchronous AC motor. As the frequency changes, so does the motor speed. Answer #2 The formula for calculating speed is: (120 X motor supply frequency) / number of poles 120 is a fixed number, so is the number of poles for a given motor, hence the only variable is the motor supply frequency. AC drives vary the motor supply frequency in turn achieving speed control.
What is advantages and disadvantages of SCR?
Advantages: simple turn On Latcing device, turn ON gain is very hih, low cost,Hih voltage and high current device. Disadvantages: Low switching speed, most suited for line commutated applications betwee 50 and 60 Hz can not be turn off with gate controlled. From: N.G.PATEL(UPS)B.TECH.(ELECT)
How does an electric drill work?
An electric drill has a small electric motor inside, driving a series of gears. The power from the gears turn a chuck, which holds the bit placed into it thereby drilling a hole.
