Determine the minimum number of poles for the generator

Assignment Help Chemical Engineering
Reference no: EM131154300

From a three-phase, 60-Hz system, through a motor-generator set consisting of two directly coupled synchronous machines, electric power is supplied to a three-phase, 50-Hz system.

(a) Determine the minimum number of poles for the motor.

(b) Determine the minimum number of poles for the generator.

(c) With the number of poles decided, find the speed in r/min at which the motor-generator set will operate.

Reference no: EM131154300

Questions Cloud

Determine the primary number of turns : The secondary of a 750 KVA, 11000/ 400 V, 50 Hz transformer has 160 turns. Determine the primary number of turns, primary and secondary full load current neglecting losses. If the area of cross section of the core is 100 cm2, what will be flux dens..
Determine the synchronous speed in revolutions per minute : Determine the synchronous speed in revolutions per minute and the useful torque in new ton meters of a 200-hp, 60-Hz, six-pole synchronous motor operating at its rated full load (1 hp ≅ 746 W).
Single point of failure : Telecommunication network providers and users are concerned about the single point of failure in the "last mile", which is the single cable from the network provider's switching station to the customer's premises.
Characteristics for n-channel jfet : Sketch the output characteristics for N-channel JFET with gate-source voltage shorted (i.e. VGS=0). How Ohmic, Pinch-off and Breakdown regions are created?
Determine the minimum number of poles for the generator : From a three-phase, 60-Hz system, through a motor-generator set consisting of two directly coupled synchronous machines, electric power is supplied to a three-phase, 50-Hz system.
Briefly summarizes the findings of the article : Write a 1,750 -to -2,100-word paper that briefly summarizes the findings of the article and that compares the effects of abuse in the article with what you have learned in this course. Make sure to address whether you see signs of codependence in ..
What factors will contribute to successful variable pay plan : What factors will contribute to a successful variable pay plan? Should performance incentives for teams be equal for all team members or based on individual performance?
What is a field effect transistor : What is a field effect transistor (FET)? Which are the different types of FET's available? Draw the circuit arrangement for obtaining the drain characteristics of a JFET and explain the procedure for obtaining the above characteristic curves. Illu..
Find the three highest speeds at which this linkage : Two coupled synchronous machines are used as a motor-generator set to link a 25-Hz system to a 60-Hz system. Find the three highest speeds at which this linkage would be possible.

Reviews

Write a Review

Chemical Engineering Questions & Answers

  Estimate the diffusion coefficient of oil dispersant

Estimate the diffusion coefficient of Oil Dispersant A in a 10 mole percent Dispersant A -sea water mixture. The concentrated solution is non-ideal

  Find the corresponding diffusion current

Find the corresponding diffusion current.

  Calculate the change in internal energy

The standard enthalpy of formation of H2O(l) at 298 K is 285.8 kJ/mol. Calculate the change in internal energy for the following process at 298 K and 1 atm: H2O(l) yields H2(g)+12 O2(g);

  Evaluate the work done by the gas

The atmospheric pressure of 100k Pa acts on the other side of the piston. The gas is heated until the volume is doubled and the final pressure is 500 kPa. Calculate the work done by the gas.

  Determine pounds of quicklime and soda ash

A lime-soda softening plant treats a flow of 150 MGD, and the water has 86mg/l Ca2+, 35 mg/L Mg2+, 299 mg/L HCO3- and 6mg/l CO2. The commercial grade of quicklime has a purity of 85% and the soda ash has a purity of 95%. Determine the pounds of qu..

  Determine the concentration in the exiting

Determine the SO2 concentration in the exiting gas as a function of solvent flow rate from 25 to 175 mol/min and prepare a graph for our staff to use in operating this process

  What is the load resistance in ohms as measured

Reconnected in Y-?, with the same high tension voltage supplied and the same load resistors connected?

  Calculate the starting torque and the maximum torque

Neglecting stator resistance and rotational and stray-load losses, and assuming constant rotor resistance, calculate the starting torque and the maximum torque in per-unit of full-load torque, as well as the slip at which the maximum torque occurs..

  Define grams of tin and lead

Grams of tin and lead, An alloy is 7 parts tin and 3 parts lead. How many grams of each are in 40g of the alloy? Let x= the number of grams of tin in the 40g of the alloy.

  Estimate the mean and standard deviation

If the capital costs in the adipic acid example described in Example 9.5 are known to within -10% to +30%, and the cash flow from operations is predicted within ±10%, estimate the mean and standard deviation of the 10-year NPV. Is there a greater ..

  Determine the percentage reduction in the applied voltage

The full-load slip is 4%. Determine the percentage reduction in the applied voltage (i.e., the percentage tap on the autotransformer).

  What is the pressure in the vapor space of the evaporator

An evaporator is used to concentrate 20 wt % NaOH solution entering at 150°F to a 45 wt% NaOH solution exiting at 200°F. What is the pressure in the vapor space of the evaporator

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd