Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Electric machines A three-phase synchronous generator 7.2 KVA, wye-connected. The synchronous impedance per phase is 0.5+j6 ohms. The fixed loss is 140W. When the generator

Electric machines A three-phase synchronous generator 7.2 KVA, wye-connected. The synchronous impedance per phase is 0.5+j6 ohms. The fixed loss is 140W. When the generator works at its rated load. The generator is connected to a 7.8 KVA 120/360 V three-phase transformer, wye connected. With the following parameters: RH=1.2 ohms XH=1.5 ohms RCH=2.5 Kilo ohms XMH=2 kilo ohms RL=0.3 ohms XL=0.27 ohms A 360 V Y-induction motor with the following characteristics will be connected to its secondary: Re=0.5 ohms Xe=0.75 ohms RC=950 ohms XM=700 ohms R2=0.15 ohms X2=0.65 ohms. The mechanical losses are 2% of the output power. And its slip is 2.2%. Determine: a) Equivalent circuit per phase of the complete circuit. b) Induction motor efficiency c) Transformer efficiency d) The value of the induced voltage in the synchronous generator e) The efficiency of the synchronous generator.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image_2

Step: 3

blur-text-image_3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Intermediate Accounting Volume 2

Authors: Kin Lo, George Fisher

4th Edition

0135220491, 9780135220498

More Books

Students also viewed these Accounting questions