Determine the efficiency of wye-connected synchronous motor

Assignment Help Electrical Engineering
Reference no: EM13256423

A 400-V three-phase, wye-connected synchronous motor delivers 12 hp at the shaft and operates at 0.866 lagging power factor. The total iron, friction, and field copper losses are 1200 W. If the armature resistance is 0.75ohm per phase, determine the efficiency of the motor.

Reference no: EM13256423

Questions Cloud

Calculate the percent voltage regulation of the generator : A 60 kVA, three-phase, wye-connected, 440 V, 60 Hz synchronous generator has a resistance of 0.15ohm and a synchronous reactance of 3.5ohm per phase. At rated load and unity power factor, calculate the percent voltage regulation.
First-borns make the best entrepreneurs : Suppose you came across an article in a magazine with the following title: “First-Borns Make the Best Entrepreneurs.” Reading the article, you discover that it contends that entrepreneurs who are the oldest child in their family are more successful t..
Share premium account : What is share premium account? if we have some amount in sharepremium account how can we utilse it? are there any accounting standards for this?
Explain c6h5cooh(s) was burned in a bomb calorimeter : The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, of H, at 25 oC for this compound of H values at 25 oC for CO2(g) and H2O(l) are 394 kJ mol 1 a..
Determine the efficiency of wye-connected synchronous motor : A 400-V three-phase, wye-connected synchronous motor delivers 12 hp at the shaft and operates at 0.866 lagging power factor. The total iron, friction, and field copper losses are 1200 W.
What are the benefits of organizing the business : You are approached by a client who would like to start his own business. The client plans to take the company public in five years. What are the benefits of organizing the business as a corporation?
Create an income statement for the year ended : The following selected information is taken from therecords of Pickard and Associates. Prepare an income statement for the year endedDecember 31, 2009.
Servant leadership to improve communities and society : Explain why it is important for servant leadership to improve communities and society. Why is leadership courage important to realize these changes?
What is the bonds nominal coupon interest rate : O'Brien Ltd.'s outstanding bonds have a $1,000 par value, and they mature in 25 years. Their nominal yield to maturity is 9.25%, they pay interest semiannually, and they sell at a price of $850. What is the bond's nominal (annual) coupon interes..

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Which filters are recursive and which are nonrecursive

Compute the first 10 samples of the step response for the nonrecursive difference equation: y(n) = x(n) -0.5x[n-1]-0.7x[n-2] Indentify which of the following filters are recursive and which are nonrecursive.

  What would be the required dc input power

A modulating signal is amplified by a 80% efficiency amplifier before being combined with a 20 kW carrier to generate an AM signal. what would be The required DC input power to the amplifier, for the system to operate at 100% modulation.

  What is the bit rate of the corresponding pcm signal

A message signal, x(t) has a bandwidth of 15 kHz and an average power of 0.5 W. This signal is to be uniformly quantized with an input range of range of +-5 V. What is the bit rate of the corresponding PCM signal if the SQNR is to be greater than ..

  How the currents through the two transistors vary

The input of a lightly loaded transmission gate is slowly Ajit Pal, IIT Kharagpur Ajit Pal, IIT Kharagpur changes from HIGH level to LOW level. How the currents through the two transistors vary

  What is the saturation current and surface leakage current

A silicon diode has a reverse current of 5 uA and 25 degrees celcius and 100uA at 100 degrees celcius. What is the saturation current and surface leakage current at 25 degrees celcius

  Explain looking at feedback and some opamp problems

Looking at feedback and some Opamp problems, If the unity gain frequency is 5 MHz and the midband open-loop voltage gain is 200,000, what is the cutoff frequency?

  Create a bandpass filter with cutoff frequencies

Create a bandpass filter with cutoff frequencies of 100-1k, attenuate by at least 3db at desired frequency(100-1k) and at 60Hz attenuate by 10 db. Resistor, Capacitor, Inductor, and Op-amps can be used.

  Determine what is the probability of false alarm

A spread-spectrum acquisition system uses a serial search scheme.The synchroniser integrates the squarer output for interval of 0.1s and the synchroniser output is sampled at intervals of 0.05s . The probability of false alarm is 0.064255 .

  How the inversion voltage is affected by the relative sizes

How the inversion voltage is affected by the relative sizes of the sizes of the nMOS nMOS and pMOS TRANSISTORS OF THE CMOS transistors of the CMOS inverter

  Derive the expression for transfer function

Derive the expression for TRANSFER FUNCTION and write the expression for magnitude and phase of H(f).

  What is the approximate area of the same chip

For a chip area with area 2cm x 2cm in a 180nm logic technology, what is the approximate area of the same chip when ported to a 32nm logic technology.

  Determine primary nad secondary turns

The maximum flux density in the core of a 250/ 3000 volts, 50 Hz single phase transformer is 1.2 Wb/m2. if the emf per turn is 8 volt, determine (i) primary nad secondary turns (ii) area of the core

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