the total iron closs in a transformer core at normal flux density was measured at 25hz and 5ohz and was found to be 250w and 800w respectively.the hysteresis loss at 50hz would be................?????
Answer Posted / utkarsh agarwal
according to the data flux density is constant.
Pe1=f1^2 Ph1=f1
Pe2=f2^2 Ph2=f2
takinf f1=25hz
f2=50 hz
Pe1/Pe2=1/4
Ph1/Ph2=1/2
now iron loss Pi=Ph1+Pe1
Therefoe
1. ph1 + pe1=250
2. 2ph1+ 4pe1=800
solving we get ph2= 200w
P.S. : "=" is meant to be proportiaonality sign in first 3 lines
Is This Answer Correct ? | 8 Yes | 1 No |
Post New Answer View All Answers
What are the roles and responsibilities of electrical engineer in cement plant
66kv under ground cable how to layaing in ground any special case two ckt r runing
specific difference of ICT&Auto Transformer
why would amp draw on neutral wire be as much as amp draw on the hot leg.
What are the different types of controllers?
what is the reqirred voltage in HT motor to get full RPM on no load test?
State the factors, for the choice of electrical system for an aero turbine.
What is phase cross over frequency?
in star-delta tranformer,if the input of star connection is 400/7v 3 kva then what is the output of delta connection?
What is the operating principle of turbo-generator.
Is electro plating what type of load whether resistive, inductive or capacitive loads
What about electrical Units. discrive in detail
The electromagnetic torque developed is proportional to what in a D.C series motor?
dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish
Explain how you decide what size of electrical wire do you need?