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What is mechanical loss in dc machines?

Friction and windage causes mechanical loss in DC machines.


What are the constant losses in a DC machine?

Constant losses Those losses in a d.c. generator which remain constant at all loads are known as constant losses. The constant losses in a d.c. generator are: (a) iron losses (b) mechanical losses (c) shunt field losses


Where does copper losses in dc machines?

Copper losses are also referred to as I^2 R losses. Copper loss is due to heating due to the current passing through the copper windings.


What are the possible losses for a dc generator?

Friction in the bearings and in the commutator, and windage loss. Electrical resistance of the armature and field windings and the brushes.


What is the difference between electrical and mechanical devices?

Electrical degrees and mechanical degrees in dc motors are related by the equation: Deg(elec) = (Number of Poles/2) *(Deg(mech))


What is the principles of DC machines?

All DC machines are works based on the principle of FARADAY'S LAW OF ELECTROMAGNETIC INDUCTION.


How can the field coils of DC machines be connected with self excited machines?

No


How many types of DC machine?

05 types of dc machines


How is DC shoes made?

machines


Can you use a dc generator as a dc motor?

Yes you can turn a motor into a generator, if it is a permanent magnet motor.


What is the difference between a DC motor and a DC generator Why can't you use a DC motor as DC generator?

A DC motor converts electrical energy to mechanical energy. The converted energy is provided to a mechanical load.A DC generator converts mechanical energy to electrical energy. The converted energy is provided to the electrical load (voltage, current referring load).A DC motor can be used as a DC generator and vice-versa.


Why carbon brushes are used in DC machines?

Carbon brushes used in DC machines because carbon is soft material and it does not generate spikes when contact with commutator