A 500-hp, wye-connected, wound-rotor induction motor, when operated at rated voltage and frequency, develops its rated full-load output at a slip of 0.02; maximum torque of 2 times the full-load torque at a slip of 0.06, with a referred rotor current of 3 times that at full load; and 1.2 times the full-load torque at a slip of 0.2, with a referred rotor current of 4 times that at full load. Neglect rotational and stray-load losses. If the rotor-circuit resistance in all phases is increased to 5 times the original resistance, determine the following:

(a) The slip at which the motor will develop the same full-load torque.

(b) The total rotor-circuit copper loss at full-load torque.

(c) The horsepower output at full-load torque.

(d) The slip at maximum torque.

(e) The rotor current at maximum torque.

(f) The starting torque.

(g) The rotor current at starting.

Posted Date: 6/14/2013 7:14:24 AM | Location : United States

Ask an Expert

Related Discussions:- Determine horsepower output at full-load torque, Assignment Help, Ask Question on Determine horsepower output at full-load torque, Get Answer, Expert's Help, Determine horsepower output at full-load torque Discussions

Write discussion on Determine horsepower output at full-load torque
Your posts are moderated

Write your message here..

Related Questions

Define the second group of 32 ascii character codes, Define the second grou... Define the second group of 32 ASCII character codes? The second group of 32 ASCII character codes include various punctuation symbols, special characters, and the numeric digit

Physics, what do we mean when we say that an equation is dimensionally corr... what do we mean when we say that an equation is dimensionally correct?

Efficiency Equations for AC Generators., Most ac generators used in Power S... Most ac generators used in Power Stations are of the " Flux Cutting " types. Their effiencies range from less than 33% to slightly more than 60%. In their efficiency equations, the

Find the flux density in the air gap of the right leg, Q. In the magnetic c... Q. In the magnetic circuit shown in Figure the center leg has the same cross-sectional area as each of the outer legs. The coil has 400 turns. The permeability of iron may

Demand meters, Demand Meters Demand meters measure volt-amperes (in kV... Demand Meters Demand meters measure volt-amperes (in kVA), that merge both reactive (reflected) and actual (consumed) power. In its easiest form, a demand meter has a gauge wh

Diploma in electrical engineering, After I complete my diploma how I get a ... After I complete my diploma how I get a job in goverment

Working of field-effect transistors, Q. Working of Field-effect transistors... Q. Working of Field-effect transistors? Field-effect transistors (FETs) may be classified as JFETs (junction field-effect transistors), depletion MOSFETs (metal-oxide-semicondu

Find the change in energy received by the charge, Q Acharge of 0.1Cpasses t... Q Acharge of 0.1Cpasses through an electric source of 6 V from its negative to its positive terminals. Find the change in energy received by the charge. Comment onwhether the charg

Differentiate thermoplastic & thermosetting plastic material, Classify plas... Classify plastic materials into two categories describe their important properties and give two examples of each. Plastic materials can be categorized in thermoplastic and ther

Determine the induced armature emf, A250-V, 50-kWshort-shunt compound dc ge... A250-V, 50-kWshort-shunt compound dc generator,whose schematic diagramis shown in Figure, has the following data: armature resistance 0.05 , series-field resistance 0.05 , and sh