A six-pole, 24 KW, 120 V, DC machine has a Simplex LAP-wound armature which has 24 coils with 8 turns per coil. Its rated speed is 2400 RPM. Assume no dead zone: If the resistance of this winding is 0.0252 per conductor, what is the armature resistance RA of this machine? Select one: a. RA = 1.6 Ohms Ob. None C. RA= 0.025 Ohms d. RA = 0.2667 Ohms

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74.5 %
O c. % Efficiency = 81.6 %
O d. % Efficiency = 91.5 %
A six-pole, 24 KW, 120 V, DC machine has a Simplex LAP-wound armature which
has 24 coils with 8 turns per coil. Its rated speed is 2400 RPM.
Assume no dead zone:
If the resistance of this winding is 0.0252 per conductor, what is the armature
resistance RA of this machine?
Select one:
a. RA = 1.6 Ohms
O b. None
C. RA= 0.025 Ohms
d. RA = 0.2667 Ohms
In the simple, one loop, one turn, 2-pole. DC machine: R = 0.5 Chms, VB = 140 V.r = 0.6 m, B = 0.4 T, and the
conductor L = 1.2 m. Find the magnetic flux and the steady state speed of the loop at no-load.
Transcribed Image Text:74.5 % O c. % Efficiency = 81.6 % O d. % Efficiency = 91.5 % A six-pole, 24 KW, 120 V, DC machine has a Simplex LAP-wound armature which has 24 coils with 8 turns per coil. Its rated speed is 2400 RPM. Assume no dead zone: If the resistance of this winding is 0.0252 per conductor, what is the armature resistance RA of this machine? Select one: a. RA = 1.6 Ohms O b. None C. RA= 0.025 Ohms d. RA = 0.2667 Ohms In the simple, one loop, one turn, 2-pole. DC machine: R = 0.5 Chms, VB = 140 V.r = 0.6 m, B = 0.4 T, and the conductor L = 1.2 m. Find the magnetic flux and the steady state speed of the loop at no-load.
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