The shaft torque of a diesel motor driving a 100V dc shunt-wound generator is 25Nm. The armature current of the generator is 18A at this value of torque. If the shunt field regulator is adjusted so that the flux is reduced by 15 per cent, the torque increases to 35Nm. Determine the armature current at this new value of torque ANSWER: A Blank 1 Blank 1 Add your answer

The shaft torque of a diesel motor driving a 100V dc shunt-wound generator is 25Nm. The armature current of the generator is 18A at this value of torque. If the shunt field regulator is adjusted so that the flux is reduced by 15 per cent, the torque increases to 35Nm. Determine the armature current at this new value of torque ANSWER: A Blank 1 Blank 1 Add your answer

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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Similar questions

The shaft torque of a diesel motor driving a 100V dc shunt-wound generator is 25Nm. The armature current of the generator is 18A at this value of torque. If the shunt field regulator is adjusted so that the flux is reduced by 15 per cent, the torque increases to 35Nm. Determine the armature current at this new value of torque ANSWER:_______________A
The shaft torque of a diesel motor driving a 100V dc shunt-wound generator is 25Nm. The armature current of the generator is 18A at this value of torque. If the shunt field regulator is adjusted so that the flux is reduced by 15 per cent, the torque increases to 35Nm. Determine the armature current at this new value of torque.
The shaft torque of diesel motor driving 100v DC shaft wound generator is 25NM generator the armature current is 16A at this value of torque .If the shaft field regulator is adjusted such that the flux is reduced by 15%, the torque increases to 35NM , determine the armature current at this new value of torque, the efficiency of the generator, the power loss in the generator.
A separately excited D.C motor is rated for a full load torque of 100Nm. For an applied voltage of 240V and for flux (φ) per pole of 30 mWb, the no-load and full load speeds of the motor are 1595 r.p.m and 1195 r.p.m respectively. (a) Find the armature resistance (b) If the applied voltage and the flux per pole are reduced to 200V and 20mWb respectively, Find the corresponding full load speed.
The shaft torque of a diesel motor driving a 100V DC shunt wound generator is 25Nm. The armature current of a generator is 16A at this value of torque. If the shunt field regulator is adjusted so that the flux is reduced by 15% the torque increases to 35 Nm. Determine the armature current at this new value of torque.
A long shunt compound generator delivers 100 A at 250 V. The armature, shunt field and series field resistances are 0.02 Ohms, 50 Ohms and 0.05 Ohms respectively. If the Break Horse Power (BHP) or the power developed by the shaft torque of the driving engine is 40, determine the stray loss.
A four-pole, three-phase induction motor drives aturbine load. At a certain operating point the machinehas 4 percent slip and 87 percent efficiency. The motordrives a turbine with torque–speed characteristic givenby TL = 20 + 0.006ω2. Determine the torque at themotor-turbine shaft and the total power delivered tothe turbine. What is the total power consumed by themotor?
A four pole DC shunt motor moves at 1000rpm on a 460v supply when taking an armature current of 45A. Annature resistance is 0,400hms, find the torque developed by the motor if the field circuit remains at 460V.
A 230 V d.c series motor has armature and field resistances of 0.5 Ω and 5.0 Ω, respectively. It draws a current of 10 A from the supply while running at 1000 rpm. If an external resistance of 1 Ω is inserted in series with the motor, calculate the new steady-state armature current and the speed. Assume the load torque remains constant. ..
The armature of a 6-pole separately excited dc generator is triplex wave wound with 534 conductors. This machine delivers power to the load at 200V while being driven at 900rpm. At this load, the armature circuit dissipates 640W. If the flux of this generator is 180-mWb, determine the kW rating of the load served. Assume a total brush drop of 2V.
A 6-pole, 500-V wave-connected shunt motor has 1200 armatureconductors and useful flux/pole of 20 mWb. The armature and fieldresistance are 0.5 ohm and 250 ohms respectively. What will be the (a)speed and (b) torque developed by the motor when it draws 20 A from thesupply mains? If stray power losses amount to 900 W, find (c) useful torque(d) output in kW and (e) efficiency at this load.
A 500 V shunt motor has an armature resistance of 0.1 ohm shunt field resistance of 125 ohms. Find the resistance of the shunt field regulator to increase the speed from 750 r.p.m, to 1000 r.p.m if the current taken by the motor is 500 A. Assume the magnetization characteristic to be a straight line.