In a d.c. machine stray loss is the sum of
WebIn a D.C. machine stray loss is the sum of Iron loss and mechanical loss Shunt field copper loss and mechanical loss Total copper loss and mechanical loss Armature copper loss and iron loss Download EE MCQ app Related Question The commutator pitch for simplex lap winding is equal to 1 Number of pairs of poles None of the listed here WebThe losses that occur in a DC Machine is divided into five basic categories. The various losses are Electrical or Copper losses (I 2 R losses), Core losses or Iron losses, Brush losses, Mechanical losses, Stray load losses. These losses are explained below in detail. Contents: Electrical or Copper losses
In a d.c. machine stray loss is the sum of
Did you know?
WebIn a D.C. machine stray loss is the sum of: A. total copper loss and mechanical loss: B. armature copper loss and iron loss: C. shunt field copper loss and mechanical loss: D. iron loss and mechanical loss: View Answer 13 -3 Explanation:- Answer : D Discuss it below : Paresh Nanda Said ... WebStray Losses in DC Machine Stray losses are miscellaneous losses which are difficult to determine. The various reasons of the stray losses in DC machine are short circuit current undergoing commutation,distortion of flux etc. The stray losses in DC machine are about 1 % of the total losses.
WebApart from the major losses as enumerated above there may be a small amount loss called stray loss occur in a machine. Stray losses are difficult to account. Power flow diagram of a d.c motor is shown in figure 40.1. A portion of the input power is consumed by the field circuit as field copper loss. WebMar 3, 2024 · These losses are usually very small about 15% of full load loss. Stray Load Losses in DC Machine: ... Variable losses are equal to the constant losses of the DC generator i.e. armature circuit loss is equal to the sum of no-load rotational loss and field circuit loss. Variable loss - Constant loss = 0 ...
WebStray Loss In practical transformer, a fraction of the total flux follows a path through air and this flux is called leakage flux. This leakage flux produces eddy currents in the conducting or metallic parts like tank of the transformer. These eddy currents cause power loss, which is known as stray loss. Dielectric Loss WebMar 20, 2013 · In DC Machine, there are broadly four main categories of energy loss. Copper Losses or Electrical Losses in DC Machine or Winding Loss The copper losses are the …
WebStray losses in a machine are the sum of iron losses and mechanical losses Where as the constant losses include both stray loss and shunt field copper loss because for a machine shunt field copper losses are constant 9 Sponsored by Gundry MD How to entirely empty your bowels every morning (revealed).
WebNov 23, 2024 · Stray losses are estimated by derived formulas based on the leakage fluxes from the induction machine windings. These leakage fluxes induce voltage drops in the … philippe thivet facebookWebIn a D.C. machine stray loss is the sum of? Last Answer : In a D.C. machine stray loss is the sum of iron loss and mechanical loss. 1 answer. 3.0k views. ... Last Answer : To avoid formation of grooves in the commutator of a D.C. machine the brushes of opposite polarity should track each other. 1 answer. 163 views. open; circuited; armature; philippe thierry lanesterWebD.C. Generators In a D.C. machine stray loss is the sum of_____________? In a D.C. machine stray loss is the sum of_____________? A. total copper loss and mechanical loss B. armature copper loss and iron loss C. shunt field copper loss and mechanical loss D. iron loss and mechanical loss Mcq Added by: admin D.C. Generators D.C. Generators philippe thiolletWebIn a D.C. machine stray loss is the sum of - iron loss and mechanical loss 84. Lap winding is composed of - any even number of conductors 85. In a D.C. generator in case the resistance of the field winding is increased, then output voltage will - decrease. 86. An exciter for a turbo generator is a philippe thireauWebIron losses in a D.C. machine are independent of variations in Armature reaction of an unsaturated D.C. machine is Eddy currents are induced in the pole shoes of a D.C. machine due to In case of D.C. machine winding, number of commutator segments is equal to The function of pole shoes in the case of D.C. machine is philippe thillayeWebAug 23, 2024 · In case of D.C. machines, mechanical losses are primary function of (a) current (b) voltage (c) speed (d) none of above Iron losses in a D.C. machine are independent of variations in (a) speed (b) load (c) voltage (d) speed and voltage In D.C. generators, current to the external circuit from armature is given through (a) commutator philippe thivetWebWhich motor should not be started on no-load Cumulatively compounded motor Shunt motor Differentially compounded motor Series motor In a D.C. machine stray loss is the sum of … philippe thirifay asta