Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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- The voltage induced in a generator is 110 V when the armature rotates at 1100 r/min. What will the voltage be if the speed is increased to 1200 r/min? A generator operating at 1850 r/min develops a voltage of 130 V. What must be the speed of the generator for a voltage of 120 V?arrow_forward128. The hysteresis loss of a dc machine is 300 W when the flux per pole is 30 mWb and the machine is driven at 1000 rpm. How much Is the loss If the field is adjusted to produce 50 mWb per pole whlle the speed Is reduced to 900 rpm? A. 420 W B. 510 W C. 450 W D. 500 Warrow_forwardThe electromotive force created by a direct current generator is proportional to Flux/pole Speed of armature Number of poles All of the aBovearrow_forward
- The current flows in the windings of the DC machine which causes the O Eddy current loss Friction loss O Ohmic loss O Hysteresis lossarrow_forwardA 4-pole DC generator runs at 650 rpm and generates an EMF of 200 V. The armature is wave wound and has 750 conductors. If the total flux from each pole is 0.015 wb, then what is the leakage coefficient ?arrow_forwardConsider the magnetic circuit in Figure. Assuming that the core p= 1000µo has a uniform cross section of 4 cm-,N= 600, the flux density in the air gap. 0.2 A L= 42 cm 4= 0.1 cm 35.4 mwb 120.8 mwb 106.2 mwb Non of These 76°F Rain Type here to search DELL LATIT UDE ES510arrow_forward
- 3. What generates the rotating magnetic field on the stator? interaction with the field on the rotor O Applied single phase AC power A fixed magnet on the rotor Applied three phase AC powerarrow_forwardProbl The rectangular coil in the figure below is in a field B = 0.01a,T. a. Find the torque about the z axis when the coil is in the position shown and carries a current of 10 A b. Find the torque if the coil turns through 90°7 0.2m & 0.2m 1-10Aarrow_forwardA shunt generator delivers 1,000 W at 149 V to a load. If the armature resistance is 0 ohm, and the shunt field resistance is 56 ohms, calculate the shunt field current in ampere.arrow_forward
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