Determine the total core and mechanical losses

Assignment Help Electrical Engineering

Reference no: EM13248263

A 230V shunt motor having an armature resistance of 0.05 W and a field resistance of 75 W draws a line current of 7 A while running light at 1120 rev/min. The line current at a given load is 46 A. Determine (a) the motor speed at the given load, (b) motor efficiency and (c) total core and mechanical losses.

Reference no: EM13248263

Questions Cloud

Find the resultant acceleration of the object : A 15-kg block rests on a level frictionless surface and is attached by a light string to a 5.0-kg hanging mass where the string passes over a massless frictionless pulley

How much work did in halving the distance between plates : A parallel-plate capacitor is charged to a potential V0, charge Q0 and then disconnected from the battery. The separation of the plates is then halved. What happens to (a) the charge on the plates

What are the conection between business and law : what are the conection between business and law from the standpoint of our economic system which is capitalized?

Calculate lost torque-opper loss and efficiency : A 100V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.25 ohm. The motor runs at a speed of 600 rev/min when the shaft torque is 27.14 Nm. Friction and windage losses at this speed are 300W.

Determine the total core and mechanical losses : A 230V shunt motor having an armature resistance of 0.05 W and a field resistance of 75 W draws a line current of 7 A while running light at 1120 rev/min. The line current at a given load is 46 A.

What will be the speed if the load torque is increased by 44 : A 220V dc series motor runs at 700 rev/min when operating at its full-load current of 20A. The motor resistance is 0.5W and the magnetic circuit may be assumed unsaturated. What will be the speed if: (i) the load torque is increased by 44

Explain the rate constant for the reaction 2hi : The rate constant for the reaction 2HI(g) -> H2(g) + I2(g) doubles on raising the temperature from 683K to 698K. What is the activation energy fro this reaction in kJ/mol

What are the three sources of variability : What are the three sources of variability that are fundamental to operations management?

Use qm for windows to answer this question : What is the probability that there will be 3 or more persons waiting in the system? Use QM for windows to answer this question.

User Account

All Pages