Which of the following is preferred to counter the effect of armature reaction in DC machine? Use of main pole Use of interpoles Use of series winding Shifting of brushes

Q: An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6…

A: No. Of poles, P = 8 No. Of parallel paths, A = 2*8 Conductors, Z = 72*6*2 Voltage, E = 124V Speed, N…

Q: Draw the DC Machine and label its parts Example. Armature Winding Stator Pole Shoe/ Face Field…

A: DC Machine An electrical device that transforms electrical energy into mechanical energy is a DC…

Q: A 10 pole lap wound DC armature has a total of 200 conductors each with a current carrying capacity…

A: Given values are - Lap windingNumber of polesP=10Number of conductorsZ=200Current…

Q: An eight-pole, 24 KW, 100 V, DC machine has a duplex LAP-wound armature which has 64 coils with 10…

A:

Q: A 230 V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.1 ohm at…

A: Given, Supply voltage, V= 230 V Armature resistance, Ra= 0.2 ohm Field resistance, Rse= 0.1 ohm Line…

Q: A DO shunt generator delivers 45 A at a terminal voltage of 220 V. The armature and the shunt field…

A: Given values are - IL=45AVt=220VRa=0.01ohmRsh=44ohmStray losses=375W

Q: Q2) In DC machine, the speed is 800 RPM, the flux per pole is 2 m wb, and it has a Lap winding…

A: Given: In a DC machine Speed, The flux per pole, It has Lap winding (means the number of parallel…

Q: For 6 polar D.C machine armature has 36 number of slots and the type of winding is a double layer…

A: Given that    6 polar D.C machine armature has 36 number of slots and the type of winding is a…

Q: The armature of a 4-pole dc machine rotates at 840 rpm. The armature length and diameter are 40 cm…

A: Given data for a dc machine P=4 N=840 rpm l=40 cm d=30 cm ϕp=65mWb n=5 Average e.m.f. induced in the…

Q: Under load in DC machines, the armature current will cause: a. Compensating Windings O b. Increase…

A: The given problem is from DC Machine.  The detailed explanation is given in the next step

Q: An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 16…

A:

Q: - Indicate whether the following statement are true or false

A: in the DC machine the emf can be calculated using the following equation E =  ∅ZPN / 60 A

Q: (7) The only parts suffers from eddy currents in AC motors: a- The stator. b- The rotor. c- The…

A: 7. Answer: The stator and rotor   Explanation: The rotating magnetic field and induced voltage cause…

Q: 1. The operation of Commutator in DC Motor is O a) to convert dc to ac O b) to convert ac to dc O c)…

A:

Q: A shunt would dc machine has an armature resistance of 0-12  and a field resistance of 100  . The…

A: A DC machine is classified in two types. DC motors DC generators On the basis of construction DC…

Q: A 4-pole dc machine is wound duplex lap. Find the number of parallel path

A: Answer: given that 4- pole DC machine poles (p) = 4 number of parallel paths denoted by A To…

Q: Q9 / What are the function of brushes , pole and commutator in DC machine

A:

Q: R1 jX1 jX2 -> IM R, RC jXM E1 S

A: Induction motor working Principle When an ac supply is connected to a stator it creates a rotating…

Q: An 8-pole dc generator has a duplex lap wound armature with 64 coils and 16 turns per coil. The…

A: Ther are a total of 64×16=1024 turns on the armature of this machine, so the number of turns per…

Q: A dc shunt motor runs at 900 rpm from a 460 V supply when taking an armature current of 25 A.…

A:

Q: Have a compensating winding in real machine means?

A:

Q: ii. Differentiate the two types of armature windings in DC machines: lap winding and wave winding.

A:

Q: When the DC machine is running under saturation condition, then flux per pole decreases due to…

A: Ans. True

Q: the basic requirement of DC armature winding is that it must be: a) a closed one b) a lap winding c)…

A: Basic circuit on electrical machines is solved below.

Q: A dc shunt generator delivers 50 kw at 250 v, its armature has a 4-pole wave winding with a…

A:

Q: An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6…

A:

Q: The resistance of the field winding(copper wire) of a DC machine is 0.25 ohm at 25°C. When operating…

A: In this question we need to find a resistance of the field winding at full load.

Q: An 8-pole DC machine has a simplex wave-wound armature containing 200 coils of 10 turns each. The…

A: Since you have asked multiple questions in a single request, we will be answering only the first…

Q: Q4/B/ What are the principal characteristics of a series DC motor? What are its uses? Core

A: There are mainly three principle characteristics of dc series motor  Torque vs armature current :…

Q: 4. What for brushes are employed in DC generator?

A: DC Generator: The device that converts mechanical energy into electrical energy is called DC…

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.