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Why are the losses in a dc machine important to know?
Losses mean energy losses, which cost money, and most people like to know how much a machine is going to cost to run.
What are industrial applications of DC shunt motors?
Dc shunt motor is a constant flux and constant speed motor . So that it is used in centrifugal pumps ,machine tools ,blowers and fans etc.
How you can change a constant DC voltage to a variable DC voltage?
By installing the varialble resistor in the circuit,the constant dc voltage would change .
What is the important of brush in DC machine?
The slip rings are the most important brush in DC machine.
What are DC Choppers?
Dc chopper is a static device which converts constant dc source to variable dc.
What is the condition for maximum efficiency of a DC machine?
The condition for maximum efficiency of a d.c. machine is that VARIABLE LOSSES must be equal to CONSTANT LOSSES i.e., variable losses = constant losses..
Why iron loss cald constant power loss?
How to calculate iron losses in dc machine
Where The core losses in a dc machine occur in?
in a dc machine core losses occur both in stator and rortor but stator core losses are negligible as compared to rotor core losses because in stator constant dc flux is given and the statot conductor is stationary so there are no eddy losses and as the flux is stationary there are no hysteresis loassses also but in rotor armature winding is placed so here alternating field is induced which cuts the rortating conductors of rotor thereby inducing eddy as well as hysteresis losses fo any more info. contact zombie
Why are the losses in a dc machine important to know?
Losses mean energy losses, which cost money, and most people like to know how much a machine is going to cost to run.
What are industrial applications of DC shunt motors?
Dc shunt motor is a constant flux and constant speed motor . So that it is used in centrifugal pumps ,machine tools ,blowers and fans etc.
What are the advantages of Swinburne's test?
1. swinburne's test is economical since power required to test a large machine is very small (i.e.,)no load input power. 2.The efficiency of the machine can be predicted at any load, since constant losses are known. 3.This method enables us to determine the losses and efficiency without actually loading the machine
How you can change a constant DC voltage to a variable DC voltage?
By installing the varialble resistor in the circuit,the constant dc voltage would change .
What motor is NOT suitable for use as a DC machine?
What motor is NOT suitable for use as a DC machine?
What is the important of brush in DC machine?
The slip rings are the most important brush in DC machine.
Flux in DC vary or constant.?
In DC or direct current, the flux is constant. AC or alternating current is variable.
What are DC Choppers?
Dc chopper is a static device which converts constant dc source to variable dc.
What is swinburne's test of DC shunt motor?
swinburne's test on dc shunt machine is to predetermine the efficiency of the dc machine , but it is not accurate it is just like estimation of efficiency of dc shunt machine when it is run as a motor and a generator............................
