Find the additional rotor resistance

Reference no: EM131359269

The rotor resistance and reactance of a wound-rotor induction motor at standstill are 0.14 ohm per phase and 0.8 ohm per phase, respectively. Assuming a transformer ratio of unity, from the eight-pole stator having a phase voltage of 254 V at 60 Hz to the rotor secondary, find the additional rotor resistance required to produce maximum torque at:

A. starting s = 1.

B. a speed of 450 r/min.

Reference no: EM131359269

Questions Cloud

Capital markets are generally seen as being efficient : John, who has just completed his first finance course, is unsure whether he should take a course in business analysis and valuation using financial statements, since he believes that financial analysis adds little value, given the efficiency of capit..

Determine the full load speed : The starting torque of a three-phase induction motor is 165 percent and its maximum torque is 215 percent of full-load torque. Determine the slips at full load and at maximum torque. Find the rotor current at starting in per unit of full-load roto..

What are the various inputs transformations and outputs : What are the various inputs, transformations and outputs? Are there subsystems? What processes of feedback and adaptation do you see?

What will be the eoq : (I) What will be the EOQ? (II) Find the purchase cycle time? (III) Find the total inventory cost per year?

Find the additional rotor resistance : The rotor resistance and reactance of a wound-rotor induction motor at standstill are 0.14 ohm per phase and 0.8 ohm per phase, respectively.

Evaluate the effectiveness of the program : You helped implement the toll collection system and returned three years later to evaluate the effectiveness of the program. Data on toll collections and traffic volumes are available on a day-to-day basis.

Calculate the mean of number of stores entered : 1304AFE Business Statistics Computer Assignment. A shopping mall estimates the probability distribution of the number of stores mall customers actually enter (X), as shown below: Calculate the mean of number of stores entered

Describe how you would like to involve the department : Gain the trust of the department heads by offering a clear explanation of the need for change.Briefly outline the steps you may use to facilitate this change process.Describe how you would like to involve the department heads with this process.

Calculate the following rotor starting current per phase : The rotor resistance and reactance of a squirrel-cage induction motor rotor at standstill are 0.14 ohm per phase and 0.8 ohm per phase respectively.

User Account

All Pages