What are the losses in DC generator?

What are the losses in DC generator?  
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1 Answer

Answer :

There are two main losses.

a. Copper losses or electrical losses.

b. Stray losses or rotational losses or constant losses.

Copper losses includes following losses

a. Armature copper losses (Ia2 ra).

b. Field copper losses (Ise2 rse) or (Ish2 rsh).

c. Losses in brush.

Stray losses are as follows

a. Magnetic losses (Iron loss or core loss).

b. Mechanical losses. 
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Enlist types of dc generator?

Description : Enlist types of dc generator?

Last Answer : D.C. Generators are classified into two types 1) Separately excited d.c. generator 2) Self excited d.c. generator, which is further classified into; 1) Series 2) Shunt and 3) Compound (which is further classified into cumulative and differential).

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Description : What is the emf equation for DC generator?

Last Answer : A = number of parallel paths. That is for lap winding it is equal to Z and for wave winding it equal to 2. 

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Description : What is the difference between self-excited and separately excited DC generator? 

Last Answer : Self-excited generator: In a self-excited generator the field winding is excited by an external DC source like a battery etc. Separately excited generator: In a separately excited generator the field poles ... is again fed to the field winding and goes on till the generator builds up voltage. 

What are the characteristics of DC generator?

Description : What are the characteristics of DC generator?

Last Answer : There are three main characteristics of DC generator and they are, a. No load saturation characteristics or OCC or magnetic characteristics (E0/If). b. Internal or total characteristics (E/Ia). c. External characteristics (V/I).

What are main types of DC generator?

Description : What are main types of DC generator? 

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Last Answer : (C) less than 800 rpm.

What are different types of losses in generator?

Description : What are different types of losses in generator?

Last Answer : Copper loss, iron loss, mechanical losses

In a D.C. generator, the iron losses mainly take place in?

Last Answer : In a D.C. generator, the iron losses mainly take place in armature rotor.

The total losses in a well designed D.C. generator of 10 kW will be nearly?

Last Answer : The total losses in a well designed D.C. generator of 10 kW will be nearly 500 W.

Losses in dc machine..?

Last Answer : Copper losses,iron losses,variable losses , constant losees

List the various losses on a DC Motor.

Description : List the various losses on a DC Motor. 

Last Answer : The various losses on a DC Motor: 1) Winding losses (Copper losses): i) Armature winding losses ii) Shunt field losses iii) Series field losses 2) Core losses (iron losses): 3) Brush contact losses: 4) Windage and frictional (Mechanical losses):

In DC motor iron losses are occurred in?

Description : In DC motor iron losses are occurred in?

Last Answer : In DC motor iron losses are occurred in the armature.

What is the percentage of stray losses in DC machine?

Description : What is the percentage of stray losses in DC machine?

Last Answer : Percentage of stray losses in DC machine is about 1 % .

what are the losses in DC machine?

Last Answer : Iron loss, copper loss and mechanical losses these are the losses in DC machine.

The armature cores of the D.C. motors are constructed with laminations to ___________. A. eliminate hysteresis B. minimize brush sparking C. reduce eddy current losses D. compensate for armature reaction

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Last Answer : Answer: C

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Last Answer : Answer: D