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What would the power loss be if the series field winding of dc motor connected directly across the 240 V dc supply?
Wiki User
∙ 6y ago
Detailed Solution. For a constant back emf, flux is inversely proportional to the speed of the motor. If field winding is disconnected accidentally, the speed would dangerously increase in order to maintain the back emf of the motor
VENOM
Wiki User
∙ 6y agoIf the series field winding is connected across 240VDC, it then becomes a shunt motor and no longer a series motor.
Just to answer the question, if the field winding is connected across then the field losses become constant since load current does not flow through the field winding (where as in a series winding the load current flows through the field winding and hence becomes dependent on load current)
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When the dc motor is connected across an AC supply then?
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How do you make a series circuits?
The components are not connected directly across the power supply. Instead they are 'daisy chained', the output of one leads into the input of the next.
What happens if load of DC series motor is disconnected?
In D.C Shunt motor, the field winding is connected parallel with the armature winding.. If you remove the supply to armature winding, the motor will stop after some time.
How do you connect an ammeter and voltmeter?
The voltmeter is connected across the supply and the ammeter is connected in series with the supply.
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A single speed permanent split capacitor AC induction motor has two separate pairs of series wound stator windings arranged at right angles to each other around the central rotor. The main run winding is connected directly to the AC power source while the secondary start winding is connected to the same source with a capacitor in series with it. The capacitor causes an electrical phase shift to the power in the start winding relative to the run winding, to produce a rotating magnetic field around the rotor which can start it turning. Since the capacitor remains in the circuit while the motor is running it's called a permanent split capacitor design.
Can a shunt field winding be used as a series field winding in dc series motor?
aster
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shunt field winding have more resistance than series field winding ************sai ganesh ************269*******
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Capacitors in connected in series result in a higher voltage rating, but lower capacitance. Two 470uF 50V capacitors connected in series will give you a total of 235uF, but you can put up to 100V across the series combination. Two 470uF 50V capacitors connected in parallel will give you a total of 940uF, across which you can put 50V (the voltage rating does not change for capacitors in parallel).
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